Skip to main content
An official website of the United States government

Topical Herbal Plaster (Tibetree Pain-Relieving Plasters) to Enhance Pain Management and Reduce Opioid Use in Cancer Patients, EASE Trial

Trial Status: active

This clinical trial tests the effect of a herbal pain relieving plaster, Tibetree pain-relieving plaster (PRP), on the skin (topical) in combination with standard opioid therapy on pain management and opioid use in cancer patients. Opioids, such as morphine and codeine, are the most effective drug treatment for moderate to severe cancer-related pain. Despite their effectiveness, up to a third of patients do not respond. This often leads to higher doses and increased risks, such as sedation, dizziness, nausea, vomiting, constipation and respiratory depression. Tibetree PRP is an over-the-counter (non-prescription) patch that includes camphor and a blend of traditional Tibetan herbs. The patch is placed on the surface of the skin where the pain is the worst. It reduces pain by reducing inflammation. Studies have shown that Tibetree PRP can reduce pain in people who have long-lasting pain, but is not yet known if it will be as effective in those who are currently experiencing pain while taking opioids. Giving topical Tibetree PRP in combination with standard opioid therapy may be a safe, tolerable and practical way to manage pain that is limited to a certain area (localized) and reduce the use of opioids in cancer patients.