I've got a few customers using CBD for Cancer and it depends on what they are using it for which cannabinoid. They should use. if you inbox me what relief you are looking for. pain management, sleep, anti-inflammatory etc. if it is My Delta 8 product I will send you a 7 pack for free. if its my Full plant extract you need. Ill send you an oil for free. We can go over dosages and such. it depends on you your body weight and a few other things. I grew this my self on USDA certified organic ground.