I always recommend a high CBD product such as a tincture in MCT oil with a CBD:THC ratio of >20:1. Use it sublingual twice daily every day for Parkinsons or chronic inflammation/cancer and every 6 hours as needed on top of that for muscle spasms/tremor/anxiety/depression. There is a study where patients acknowledged continued benefits of their Parkinson symptoms even after 14 weeks of use. This works well, because any ratio of CBD:THC >10:1 will not make you "high." It will take about 2-3 weeks for full efficacy, and you must titrate your dose up as you see fit as you will build tolerance about every 2-3 weeks. Hope this helps!