Abstract
Introduction: Our research group is conducting three large randomized placebo-controlled trials of medicinal cannabis for cancer symptoms. All participants are invited to take part in a posttrial surveillance study. Methods: Participants were given the manufacturers dosing instructions and liberty to titrate to effect. Data were collected on symptoms (Edmonton Symptom Assessment Scale [ESAS] score), perceived benefits, adverse effects, satisfaction with the product, and dose/frequency. Results: Twenty-six percent of eligible participants consented to take part in the surveillance study. Most participants changed their self-titrated dose at least once. Pain, sleep, and mood were the most frequently cited symptoms which improved. Fatigue, nausea, and cognitive impairment were the most frequently mentioned adverse effects. Conclusion: Participants felt confident making changes to their medicinal cannabis dose within the limits suggested by the manufacturer of each product. A number of benefits and adverse effects were ascribed to the product. Benefits were similar to those described in previous studies.
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