Many of these can be easily picked up from reputable high street stores, such as Holland & Barrett or Boots.
What CBD products are available?
The choice of CBD products has exploded recently: you can buy oils, capsules, muscle gels, sprays and oral drops, as well as beer, tea, sweets, hummus and even CBD-infused clothing.
What is CBD, and is it legal in the UK?
CBD’s popularity has been given a boost by the fact that two CBD-containing medicines have been approved for prescription use by the NHS in England: Epidyolex, which has been found to reduce the number of seizures in children with severe epilepsy, and Sativex, which contains a mixture of CBD and THC, and is licensed for treatment of muscle stiffness and spasms in people with MS.
The issue of drug interactions is a significant one. CBD inhibits two powerful pathways the body uses to detoxify drugs, the CPY3A4 and CYP2D6 systems. This is a serious issue for you. Ticagrelor (Brilinta), an anticoagulant, is metabolized by CYP3A4, as are some of the statin drugs usually prescribed to people with heart blockages.
Dear Dr. Roach: This question is for my husband. How safe is drinking tea while on warfarin?
There is also an issue with proving the dosage and purity of products said to contain CBD.
However, in the case of essential tremor, there is some evidence: Studies in mice have shown benefit with CBD, although a single case report showed effectiveness of THC but not CBD in essential tremor.
CBD is typically sold as an oil, and has been receiving press as a potential treatment for a wide variety of medical issues. Many or most of these claims have no data to support them. Anecdotal reports, such as most blogs, are neither reliable nor scientific (and may or may not be true).
Dr. Keith Roach writes a medical question-and-answer column weekdays.