It’s a very individual thing. I think it’s important to start at a low dose & increase in increments. I looked at several websites that showed dosage per body weight. The bottle of oil I have says (I think) 10-20 ml once or twice a day. Some of the things i’ve Read indicated that taking too much may not increase benefits. I started at 13 mg with the choc hearts. That was fine for me. W the gummies I needed 20 mg. The gummies come in 100 mg strength so I cut them up.
Also, there are a few prescription meds that may be metabolized differently when you are taking CBD. My Blood pressure med was one of these. I asked my doctor before I took it & she said it should be ok. I monitored my blood pressure & haven’t Had any problems. Web site said meds that you can’t take grapefruit with are some of the ones that may be affected by CBD.