THC levels of Purple Thai vary from 20% to 24% with an 80/20 sativa-dominant blend. For medical purposes, Purple Thai is best used by people who battle fatigue or depression because of its energetic effects, but it is also known to treat stress and chronic pain because of its ability to numb the body. Be forewarned, this is not a good bud for people who suffer from anxiety, PTSD, or for those new to marijuana use in general, as it can create strong psychoactive effects if you aren’t careful.