Semisolid Formulations Research Articles

Semi Solid Dosage from Ointments

Oinment are semisolid formulation commonly used topic administration active pharmacutical ingredient And theraputic uses of oinment in trating various Dermatological and systematic condition oinment are primarily composed base (such as petroleum lanolin or emulsifying wax ) the skin barrier for localized or systemic effect..

Vesicular phospholipid gels: A new strategy to improve topical antimicrobial dermatotherapy

Therapeutically effective and biocompatible dermal formulations that can ensure localization of a high level of antimicrobial drug at the site of action for an appropriate duration, while at the same time providing intrinsic reepithelization properties, are of particular importance for the treatment of infected and injured skin. The current research aimed to explore the potentials of using vesicular phospholipid gels (VPGs), semisolid formulations consisting of tightly packed liposomes (100–––200 nm), as innovative local depot drug vehicles for advanced topical dermatotherapy. Ciprofloxacin hydrocholoride (CPX) was selected as a model hydrophilic antibacterial drug and was loaded into several VPGs, differing in their composition. Various CPX-loaded VPGs (CPX-VPGs) were evaluated in vitro for the rheological and physicochemical characteristics, drug release profile, stability under in vivo mimicked conditions and during storage, skin permeability, biocompatibility with the epidermal cells, antibacterial efficacy and wound healing assay, to determine the optimal CPX-VPG for topical dermatotherapy. Viscosity and bilayers fluidity of VPGs affected the release of CPX from CPX-VPGs and its skin localization, limiting CPX percutaneous absorption. All CPX-VPGs exhibited even a 2-fold increase in anti-biofilm activity against both Pseudomonas aeruginosa and methicillin-resistant Staphylococcus aureus (MRSA) clinical isolate compared to the free drug, while showing no toxic effects on human keratinocytes in vitro. Based on the pronounced proliferative effects on keratinocytes, superior in vitro wound healing effect and drug localization on/inside the skin, CPX-VPGs containing chitosan and hydrogenated phospholipid proved to be the most promising for topical dermatotherapy. These findings, along with increased bioadhesiveness and the slow drug release, with CPX concentrations significantly above the minimum biofilm inhibitory concentrations for bacteria typical in infected wounds, would contribute not only to the improvement of the antimicrobial dermatotherapy, but also to reduction of the frequency of the drug administration.

Synthetic membrane selection for in vitro release testing (IVRT): A case study of topical mometasone furoate semi-solid dosage forms

In vitro release testing (IVRT) is extensively used to develop the formulation of topical semi-solid products, to evaluate the quality and consistency of the product after scale-up and post-approval changes, and more recently to aid the evaluation of topical generic products’ equivalency. The selection of synthetic membrane is one of the most critical parameters of the method development part of IVRT. It is well known that the membrane features namely its polymer matrices, porosity, pore size, thickness can have a substantial effect on the IVRT data. However, there is no detailed information available in the literature regarding the membrane selection for different types of topical dosage forms. Therefore, we aimed to investigate whether difference topical semi-solid dosage forms of the same drug molecule would cause to variation in the membrane selection. Within this framework, rheological behaviour of commercially available three different types of topical semi-solid dosage forms (ointment, cream, and lotion) of mometasone furoate (0.1%) were primarily characterized. Then, the membrane inertness test was conducted using a series of synthetic hydrophilic membranes (regenerated cellulose, cellulose acetate, cellulose nitrate, mixed cellulose ester membranes) and hydrophobic membranes (polyether sulfone, polypropylene, polytetrafluoroethylene membranes) after identifying of an appropriate receptor medium that ensures sink condition for mometasone furoate. Lastly, IVRT studies from the topical semi-solid products were performed utilizing Franz-type diffusion cells. The membrane inertness and in vitro release data demonstrated that the cellulose acetate membrane showed superior diffusion properties in general while the other synthetic membranes exhibited varying outcomes for different semi-solid dosage forms of mometasone furoate. Overall, the results indicated that the release rate and the cumulative drug released amount of drug after 6 h through the different synthetic membranes might vary depending on the semi-solid dosage form. In order to select the synthetic membrane for IVRT, it should also be considered potential interactions between the polymer matrices and the chemical structure of drug molecule as well as formulation components prior to conducting membrane inertness test and IVRT studies.

The effect of Amazonian andiroba oil on antioxidant activity, mechanical, rheological and skin permeation properties of environmentally responsive emulgels

Emulgels are semi-solid systems that can improve the bioavailability of bioactive agents by combining the properties of gels and emulsions in a stable way. The use of bioadhesive systems by combining different polymers can prolong the release of various bioactive agents, such as the oil of Carapa guianensis (andiroba oil; AO), which has been of interest to researchers for years due to its antioxidant properties, antitumor, antibacterial and anti-inflammatory activity. Therefore, the aim of the present work was to evaluate the influence of different amounts of AO on the physicochemical properties of thermoresponsive bioadhesive emulgels composed of Carbopol 974 P® and poloxamer 407. The mechanical, rheological, bioadhesive, skin permeation and antioxidant activity characteristics were analyzed. AO and emulgel systems showed a potential antioxidant effect via different mechanisms. The formulations also displayed important results in terms of textural mechanical, bioadhesiveness, rheological and skin retention characteristics. However, F1 showed more promising results than F2, with differences mainly in softness, bioadhesion and rheology. These results ensure favorable properties for potential use as a topical semi-solid formulation and for therapeutic applications. However, additional studies are necessary to explore their in vitro biological and in vivo performance.

Impact of salt strength on in vitro propagation and rebaudioside A content in Stevia rebaudiana under semi-solid and liquid MS media.

Stevia rebaudiana (Bertoni), commonly known as stevia, is a sought-after natural sweetener, but its conventional propagation methods are slow and inefficient. This study aims to enhance the in vitro culture for stevia by investigating the impact of different Murashige and Skoog (MS) medium salt strengths and plant growth hormones on growth and rebaudioside A content. Apical bud-containing shoot segments were used as explants and cultured on various semi-solid and liquid MS media formulations, incorporating cytokinins (BAP and Kin), auxins (NAA and IAA), and different MS major salt concentrations (MS full, ½ MS, and ¼ MS). Assessments of shoot growth parameters, root formation, and HPLC analysis for rebaudioside A content were conducted. The optimal conditions for in vitro growth was found to be in the ¼ MS + Kin 3mg/L + NAA 0.1mg/L (semi-solid) medium, resulting in significantly improved shoot growth and enhanced 30.04% rebaudioside A content. Genetic fidelity of regenerated plants was confirmed using RAPD and ISSR markers. These findings offer valuable insights for optimizing in vitro propagation of stevia and potentially enhancing rebaudioside A content.

Retinol and Oligopeptide-Loaded Lipid Nanocarriers as Effective Raw Material in Anti-Acne and Anti-Aging Therapies

The use of lipid nanocarriers as components of cosmetic formulations may provide an opportunity to fully exploit the beneficial properties of pentapeptide-18 and retinol while reducing the undesirable effects that occur during retinoid therapy. This study aimed to evaluate the effectiveness of semi-solid formulations enriched with retinol and oligopeptide-loaded lipid nanocarriers. Solid lipid nanoparticles were produced using a high-shear homogenization method. The work included physicochemical characterization of the cosmetic products, and evaluation of their stability as well as their efficacy. The resulting semi-solid preparations were determined to be stable regardless of their storage temperature. No effect of the presence of lipid nanoparticles on the shelf-life stability of the cosmetic products was observed. A temperature of 25 °C was considered the recommended storage temperature for the tested semi-solid formulations. Beneficial effects of the cosmetic products were proven (in vivo study on volunteers), i.e., a significant reduction in the level of sebum secretion (anti-acne therapy) and a decrease in the number of facial wrinkles (anti-aging therapy). In addition, the protective properties of the lipid nanoparticles themselves against the skin were confirmed, reducing the irritating effect of retinol that is usually the case with classic retinoid therapies.

Study of the Effect of Phosvitin as a Potential Carrier on the Permeation Process of Somatotropin (STH) and Corticotropin (ACTH) from Biodegradable Polymers Used as Vehicles for STH and ACTH in Semi-Solid Formulations for Skin Application.

Phosvitin shows chelating abilities, an affinity for ACTH (corticotropin), growth factors, antioxidant properties, and acidic nature. An attempt was made to use this protein in hydrogels as a transporter of other protein substances: somatotropin (STH) and (ACTH). The aim of the study was to evaluate the effect of phosvitin on the permeation of ACTH and STH from semi-solid forms of the drug applied to the skin. Four hydrogel substrates were prepared using natural polymers: sodium alginate, methylcellulose, and starch. Based on the evaluation of physicochemical parameters, the hydrogel with the most favorable properties was selected and loaded with the active substances STH and ACTH, followed by the addition of phosvitin. A study of the permeation of STH and ACTH through the artificial cellulose membrane and through porcine skin was carried out without and with the addition of phosvitin. The effect of protein substances on rheological and textural parameters was studied. The evaluation of physicochemical parameters showed a favorable effect of STH and Phosvitin on the stability of the hydrogel with 4% methylcellulose and no effect of ACTH. All prepared formulations showed a reaction close to the natural pH of human skin. In the porcine skin permeation study, the addition of Phosvitin to the hydrogel with STH caused a slight increase in the amount of STH permeated and an increase in the time for STH to permeate porcine skin by 30 min. Phosvitin caused an increase in the amount of ACTH permeated through porcine skin almost twofold. Phosvitin may prove to be a promising permeation promoter for model protein-peptide substances when applied to the skin surface.

Acai Oil-Based Organogel Containing Hyaluronic Acid for Topical Cosmetic: In Vitro and Ex Vivo Assessment.

Organogels are semi-solid pharmaceutical forms whose dispersing phase is an organic liquid, for example, an oil, such as acai oil, immobilized by a three-dimensional network formed by the gelling agent. Organogels are being highlighted as innovative release systems for cosmetic active ingredients such as hyaluronic acid for topical applications. Acai oil was evaluated for its physicochemical parameters, fatty acid composition, lipid quality index, spectroscopic pattern (Attenuated total reflectance Fourier Transform Infrared Spectroscopy), thermal behavior, total phenolic, total flavonoids, and total carotenoids and β-carotene content. The effectiveness of the organogel incorporated with hyaluronic acid (OG + HA) was evaluated through ex vivo permeation and skin retention tests, in vitro tests by Attenuated total reflectance Fourier Transform Infrared Spectroscopy and Differential Scanning Calorimetry. The physicochemical analyses highlighted that the acai oil exhibited quality standards in agreement with the regulatory bodies. Acai oil also showed high antioxidant capacity, which was correlated with the identified bioactive compounds. The cytotoxicity tests demonstrated that the formulation OG + HA does not release toxic substances into the biological environment that could impede cell growth, adhesion, and efficacy. In vitro and ex vivo analyses demonstrated that after 6 h of application, OG + HA presented a high level of hydration, thermal protection and release of HA. Thus, it can be concluded that the OG + HA formulation has the potential for physical-chemical applications, antioxidant quality, and potentially promising efficacy for application in the cosmetic areas.

Dual Chemotherapeutic Loading in Oxalate Transferrin-Conjugated Polymersomes Incorporated into Chitosan Hydrogels for Site-Specific Targeting of Melanoma Cells.

In this work, we developed a smart drug delivery system composed of poly (ethylene glycol)-block-poly (ε-caprolactone) (PEG-PCL)-based polymersomes (Ps) loaded with doxorubicin (DOX) and vemurafenib (VEM). To enhance targeted delivery to malignant melanoma cells, these drug-loaded nanovesicles were conjugated to the oxalate transferrin variant (oxalate Tf) and incorporated into three-dimensional chitosan hydrogels. This innovative approach represents the first application of oxalate Tf for the precision delivery of drug-loaded polymersomes within a semi-solid dosage form based on chitosan hydrogels. These resulting semi-solids exhibited a sustained release profile for both encapsulated drugs. To evaluate their potency, we compared the cytotoxicity of native Tf-Ps with oxalate Tf-Ps. Notably, the oxalate Tf-Ps demonstrated a 3-fold decrease in cell viability against melanoma cells compared to normal cells and were 1.6-fold more potent than native Tf-Ps, indicating the greater potency of this nanoformulation. These findings suggest that dual-drug delivery using an oxalate-Tf-targeting ligand significantly enhances the drug delivery efficiency of Tf-conjugated nanovesicles and offers a promising strategy to overcome the challenge of multidrug resistance in melanoma therapy.

Physical Test of Avocado Leaf Extract Cream Formula

Avocado (Perseaamericana Mill) is a plant that grows widely in subtropical and tropical areas, one of which is Indonesia. The leaves of the avocado plant, which we can use as traditional medicine, are reported to be anti-bacterial and can inhibit the growth of several bacteria, including Staphylococcus aurus. The active substances contained in avocado leaves are flavonoids, quercetin and tannin which are useful as anti-bacterials and as a source of natural antioxidants. This study aims to determine the results of the physical test of the avocado leaf extract cream formula. This type of research is quantitative with a descriptive research design. In testing the cream, an organoleptic test, homogeneity test, pH test, spreadability test, absorption test and adhesion test were carried out. The results obtained in the organoleptic test were seen from the yellowish brown color, the semi-solid dosage form, and the distinctive creamy smell of avocado leaves, the homogeneity test of the cream did not occur in phase separation, namely the water phase and the oil phase, the pH test of the cream had a pH of 7, the power test Spread the cream with a diameter of 6.1 cm, the cream's absorption test can absorb water optimally, and the cream's adhesion test obtains an adhesion time of 1.48 seconds. The physical test of the avocado leaf extract cream formula meets the requirements.

Microbiological and Analytical Evaluation of Semi-Solid Formulations of Doxycycline Hyclate under Accelerated Stability Conditions

الدوكسيسكلين هايكلات هو مضاد حيوي واسع الطيف ينتمي لعائلة التتراسيكلينات، يستخدم بشكل واسع في معالجة العديد من الأمراض الالتهابيًة، ويعتبر الخط العلاجي الأوًل في تدبير الحالات المتوسطة إلى الشديدة من حب الشًباب. تم في هذا البحث صياغة أربع صيغ نصف صلبة للدوكسيسيكلين (F2,F1 كصيغ هلاميًة، F3,F4 كصيغ مرهميًة)، ثم عُرّضت الصيغ السابقة إلى شروط ثبات مسرًعة في حاضنات الثبات لمدة ثلاثة أشهر. تم تقييم الصيغ المحضرة باستخدام طرق ميكروبيولوجيًة وتحليلية وذلك خلال شهر وثلاثة أشهر. استخدمت طريقة الانتشار على الآغار لتقييم الفعاليًة المضادة للجراثيم وذلك على نوعين من الجراثيم، العنقوديات المذهًبة والزائفة الزنجاريًة. بينما استخدم HPLC كطريقة تحليل كمية وكيفية لمقايسة الصيغ. أجريت مقارنة بين نتائج المقايسة الميكروبيولوجيًة والمقايسة التحليلية لتقييم الفعاليًة. أظهرت النتائج أن الصيغ المرهميّة F3,F4 أكثر ثباتاً من الصيغ الهلاميّة F1,F2، حيث بلغت النسبة المئوية للدوكسيسيكلين % 93و%91 للصيغة F3,F4 على التوالي وذلك عند الحفظ بدرجة حرارة الغرفة بعد شهر واحد. بينما بلغت النسبة%90 و65% للصيغ الهلاميّةF2,F1 عند الحفظ في نفس الشروط السابقة. أظهرت نتائج قياس الفعاليًة المضادة للجراثيم أن الصيغة المرهميًة F4 امتلكت أكبر قطر تثبيط جرثومي ويقدر بحوالي 31 ملم للعنقوديات المذهبة و26 ملم لـلزوائف الزنجارية وذلك بعد حفظ الصيغة لمدة ثلاثة أشهر عند درجة الحرارة 25ºم. وبالتالي حافظت الصيغ على فعاليتها على الرغم من التخرّب الكيميائي البنيوي للحاصل للدوكسيسيكلين. تعود هذه الفعالية إلى حقيقة أن نواتج التخرب لا تزال محافظة على الموقع البنيوي الفعًال والمسؤول عن إعطاء الفعاليًة المضادة للجراثيم.

Characterization of Structure-Surface Correlations in Ointments Using Surface Tensiometry within the Concept of an Integrated Analytical Approach.

In recent years, integrated data analysis has proven to be a valuable method for investigating complex systems, whether artificial or natural. The integrated analytical approach allows the simultaneous integration of data acquired from different analytical techniques employed for the same sample at the same time, leading to an expansion of the amount of information available. Surface tensiometry is a technique that was recently introduced in the Integrated Analytical Approach for investigating pharmaceutical dosage forms for topical application. Therefore, studies of rheological characterization, release, and skin permeation can be integrated with surface tensiometry measurements to develop chemical and rheological-surface correlation models, providing a new method for the quality control and process control of semisolid preparations. In this context, the aim of this research is to validate the utility of surface tensiometry measurements in the Integrated Analytical Approach and utilize these data to gain insights into the structure-surface correlation. The preparations chosen for this study were a PEG-gel, a lipogel, and an O/W cream containing carnitine as a model drug. The formulations were characterized using rheological measurements and evaluated for their carnitine release performance. Furthermore, surface tensiometry measurements were performed to rapidly and noninvasively assess the influence of carnitine on the surface properties of the semisolid preparations investigated. Our work demonstrated a close correlation between surface energy and structural data, showing the importance of surface tensiometry contribution in the noninvasive and rapid evaluation of the presence of carnitine in semisolid formulations.

Bioadhesive gel containing 5 % acyclovir for the treatment of herpes labialis: Preclinical development

Acyclovir is widely indicated for the treatment of herpes labialis, an infection typically caused by herpes simplex virus 1 (HSV-1). The standard treatment is based on the use of this antiviral in conventional topical semi-solid formulations (ointments, creams or gels), which have limitations such as low skin adherence and poor patient compliance. On the other hand, therapeutic bioadhesive gels (TBG) are semi-solid formulations that form a thin and transparent polymeric film in situ, displaying superior cosmetic attributes than conventional semi-solid forms and offering improved skin maintenance and patient compliance. In this study, a TBG containing 5 % of acyclovir was developed and characterized in terms of assay, impurities, appearance, pH, viscosity, particle size and morphology and microbiology count, complying with specifications. Stability studies showed that acyclovir-TBG was stable for at least 3 years under the experimental conditions carried out according to the International Council for Harmonisation (ICH) guidelines. Moreover, its cosmetic attractiveness and film-forming ability were considered positive and the in vitro penetration studies revealed a 23.8-fold increase in acyclovir retained percentage in the skin compared to the reference product Zovirax® (11.9 vs 0.5 % after 24 h, respectively). Finally, in vivo skin and ocular irritation studies as well as dermal tolerance studies did not show any negative sign in the macroscopic and microscopic examination. Thus, the proposed formulation could be a good and safe alternative for the topical treatment of lesions caused by HSV-1.

Comparison of permeability of topical Cream drug through polymer synthetic membranes of different structures using Franz Cell diffusion test

In this study, in-vitro release experiments were performed using a Franz Diffusion Cell system for Terbinafine Hydrochloride, which is used in the treatment of various fungal infections in the skin caused by many susceptible dermatophytes. In order to evaluate TH transdermally, it was aimed to compare the permeability between polymeric membranes synthesized with polyvinyl alcohol and chitosan mixtures and commercial membranes. In the transdermal drug delivery system calculations, the Fick Diffusion Law was modified and the obtained data were compared. The study was evaluated according to the USP <1724> topical drug products in semisolid form - performance tests. A new high-performance liquid chromatography method was validated for the assay of TH released into the receptor medium in accordance with the ICH guideline. According to the results obtained during the validation process, the limit of detection value was calculated as 0.005 µg/mL and the limit of quantification value was 0.013 µg/mL. Since polymer-based synthetic membranes provide permeability according to molecular size, properties and the ideal environment for measuring and analyzing the diffusion rate of a compound, in experiments conducted using membranes of different structures, the permeability profiles of selected polymer synthetic membranes were statistically evaluated. It has been noted that the hydroxyl groups in PVA and the hydrophilic CS-g-PNDMAAm graft copolymer act at varying rates to enhance or reduce the permeability across the membrane by promoting its diffusion. NaY zeolite has been shown to function as an adsorbent against the medication, lessening the impact of hydrophilic PVA without supplying permeability.

Newly Developed Semi-Solid Formulations Containing Mellilotus officinalis Extract: Characterization, Assessment of Stability, Safety, and Anti-Inflammatory Activity.

Melilotus officinalis has been traditionally used as an anti-inflammatory agent; nevertheless, a comprehensive evaluation of its efficacy and safety and comparison with standard drugs are lacking. Taking into consideration concerns with current therapies, like efficacy limitations, side effects, and resistance, we aimed to develop a natural gel and cream based on Melilotus officinalis extract and explore their anti-inflammatory potential. After the chemical analysis of the extract confirmed the presence of coumarin, p-coumaric acid, gallic acid, and quercetin, formulations were prepared and subjected to physical and chemical stability evaluations over 6 months. The safety potential was tested in rats, while the anti-inflammatory activity was assessed both via in silico tests and in a rat model of inflammation. The examined formulations showed stable physical characteristics at the defined storage conditions and did not exert any sign of adverse skin reaction. The gel formulation exhibited a remarkable effect in inflammation reduction comparable with hydrocortisone. The in silico results suggest that coumarin, p-coumaric, and gallic acid bind to COX-1 and COX-2 with a lower affinity compared to diclofenac. On the other hand, quercetin demonstrated comparable inhibitory activity and stronger interaction compared to the control drug. Our results indicate that the examined formulations are stable and safe and may be promising dermal products for the alleviation of inflammatory skin conditions.

Advancing inflammatory skin disease therapy: Sustained tofacitinib release via electrospun fiber dressings

Inflammatory skin diseases are typically managed with semi-solid formulations such as creams and ointments. These treatments often fail to remain on the skin for long, as they can be easily wiped off by clothing, necessitating frequent reapplication throughout the day and resulting in poor patient adherence. Therefore, this study sought to fabricate an electrospun dressing as an alternative dosage form that provides a sustained release of the anti-inflammatory agent tofacitinib over three days. In this study, three types of electrospun fiber dressings – uniaxial, coaxial, and layer-by-layer – were produced and examined for their morphological, mechanical, and release characteristics. In addition to a comprehensive characterization, another objective was to analyze the drug permeation behavior from these fiber dressings on porcine skin, comparing their performance to that of a tofacitinib cream. The layer-by-layer system notably exhibited a delayed drug release, while the uniaxial and coaxial systems demonstrated an initial burst release. However, the permeation studies revealed no significant differences between these systems, underscoring the necessity of conducting such studies – a crucial aspect often overlooked in research on electrospun fiber dressings. Overall, this study highlights the potential of electrospun, drug-loaded dressings for the treatment of inflammatory skin diseases.

Clay-carvacrol nanoemulsions for wound healing: Design and characterization studies

One of the current challenges of scientific research is the design of advanced wound care to obtain a rapid and complete healing of chronic wounds, thus avoiding serious complications. With this purpose, a great deal of attention has been paid to Carvacrol (CRV), a monoterpene and one of the main components of the essential oils of Oregano, Thyme and Satureja Montana. Despite its promising properties in wound treatment, CRV exhibits high lipophilicity, rapid oxidation and volatilization, and inadequate retention time at the site of action, which limit its therapeutic application. A possible technological strategy to overcome these disadvantages could involve the preparation of CRV-based oil in water nanoemulsions (O/W NE) in which CRV itself is used both as the oil phase and as the active compound. CRV-NE uncoated or coated by Chitosan were prepared and deeply characterized. In particular, stability studies were carried out in order to observe some parameters such as dimensions, ζ-Potential, pH and CRV amount at different temperatures over 90 days. Furthermore, the size was evaluated by DLS analyses and compared with data obtained by TEM observations. Secondly, two clay minerals (a montmorillonite and a sepiolite, VHS and PS9 respectively) were added to the NE in order to increase the final viscosity, thus obtaining a semisolid formulation. The rheological properties of the formulations were also studied, in particular, NE and NE-Ch samples were analyzed for 3 months while NE-Ch-VHS, NE-Ch-PS9 for 1 month. Finally, the biocompatibility of CRV-NE, as well as its antioxidant and anti-inflammatory properties, were proved in vitro on fibroblasts and macrophages.

Preparation and Evaluation of Cream Containing Betel Leaf Extract for Removal of Cutaneous Warts

Abstract: Warts are common skin growths caused by the human papillomavirus (HPV). They can appear on any part of the body but are most commonly found on the hands, feet, and genitals. Warts are usually harmless but can be unsightly or cause discomfort, especially if they are frequent friction or pressure. There are several types of warts, including common warts, plantar warts (on the soles of the feet), genital warts, and flat warts (often found on the face). Creams are semisolid dosage form containing one or more drugs substances dissolved or dispersed in a suitable base. They are emulsion of either W/O, O/W creams are uses for various purposes. Wart removal cream contains some synthetic substances as well as herbal ingredients like betel steam which is having antiviral activity against the human papilloma virus (HPV). Then calcium carbonate and sodium hydroxide slowly absorbed into the skin causing rupturing of the skin cells that contains the wart virus. To prepare wart removal cream sodium hydroxide and calcium carbonate along with the aqueous extract of betel leaf by maceration with the excipients such as stearic acid, glycerin, methyl paraben, distilled water are used. Finally, the cream is evaluated with various parameters such as physical and chemical properties like pH, viscosity, spreadability, texture. As this cream has clove oil which is used as an analgesic to avoid the irritational pain. The pH of the cream is supposed to be basic and around 12-12.5. During the evaluation the pH of the cream was found out to be 12.1. Cream was easily spreadable and it had a pleasant appearance.

Low drug load, high retention mometasone furoate cream with polyglyceryl − 3 oleate as a chemical enhancer: Formulation development, in vivo and in vitro evaluation and molecular mechanisms

The study aimed to create a low loading, high retention, easier to apply O/W mometasone furoate (MF) cream using a chemical enhancer (CE) approach to provide more options for patients with atopic dermatitis (AD) and to investigate molecular mechanisms of its increased release and retention. A Box-Behnken design determined the optimal formulation based on stability and in vitro skin retention. Evaluations included appearance, rheological properties, irritation, in vivo tissue distribution and pharmacodynamics. Molecular mechanisms of enhanced release were studied using high-speed centrifugation, molecular dynamics and rheology. The interaction between the CE, MF and skin was studied by tape stripping, CLSM, ATR-FTIR and SAXS. The formulation was optimized to contain 0.05% MF and used 10% polyglyceryl-3 oleate (POCC) as the CE. There was no significant difference from Elocon® cream in in vivo retention and pharmacodynamics but increased in vivo retention by 3.14-fold and in vitro release by 1.77-fold compared to the basic formulation. POCC reduced oil phase cohesive energy density, enhancing drug mobility and release. It disrupted skin lipid phases, aiding drug entry and formed hydrogen bonds, prolonging retention. This study highlights POCC as a CE in the cream, offering insights for semi-solid formulation development.

Biopolymer Drug Delivery Systems for Oromucosal Application: Recent Trends in Pharmaceutical R&D.

Oromucosal drug delivery, both local and transmucosal (buccal), is an effective alternative to traditional oral and parenteral dosage forms because it increases drug bioavailability and reduces systemic drug toxicity. The oral mucosa has a good blood supply, which ensures that drug molecules enter the systemic circulation directly, avoiding drug metabolism during the first passage through the liver. At the same time, the mucosa has a number of barriers, including mucus, epithelium, enzymes, and immunocompetent cells, that are designed to prevent the entry of foreign substances into the body, which also complicates the absorption of drugs. The development of oromucosal drug delivery systems based on mucoadhesive biopolymers and their derivatives (especially thiolated and catecholated derivatives) is a promising strategy for the pharmaceutical development of safe and effective dosage forms. Solid, semi-solid and liquid pharmaceutical formulations based on biopolymers have several advantageous properties, such as prolonged residence time on the mucosa due to high mucoadhesion, unidirectional and modified drug release capabilities, and enhanced drug permeability. Biopolymers are non-toxic, biocompatible, biodegradable and may possess intrinsic bioactivity. A rational approach to the design of oromucosal delivery systems requires an understanding of both the anatomy/physiology of the oral mucosa and the physicochemical and biopharmaceutical properties of the drug molecule/biopolymer, as presented in this review. This review summarizes the advances in the pharmaceutical development of mucoadhesive oromucosal dosage forms (e.g., patches, buccal tablets, and hydrogel systems), including nanotechnology-based biopolymer nanoparticle delivery systems (e.g., solid lipid particles, liposomes, biopolymer polyelectrolyte particles, hybrid nanoparticles, etc.).