Abstract
Since ancient times, people have used medicinal plants to treat various diseases. Nerium oleander is a toxic plant due to the presence of various cardiac glycosides. Oleander, at a dose of 50 mg kg-1 inhibits Na+/K+ ATPase pump in mice. Despite being toxic, it is used in traditional medicine. Almost all of the parts of oleander plant contain various phytochemicals such as phenols, tannins, flavonoids, coumarins, sterols, triterpenes, alkaloids, and different types of cardenolides. Oleander extract has neuroprotective, sedative, and anticonvulsant properties, especially against ischemic stroke. Cardenolides like nerizoside, neritaloside, odoroside-H, and neridiginoside offer advantages when used as CNS depressants. CNS depressant action of oleander is primarily due to a rise in GABA levels. At low to moderate dose, it shows depressant activity but in high doses, body became motionless inducing tremors and lethargy. Oleanderʼs dual role of toxic and therapeutic activity raises concerns about its application. Yet due to presence of vast constituents, it can be used for modern medicine.
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