My naturopath prescribed it and had a compounding pharmacist make me the dose. - I remember he put the tablets into a clear pill thing I could swallow as the taste is very bad. I used the same pharmacist for all my meds - he was able to pre order some meds for me as often there was shortages and we realized I needed alot so he stocked extra for me. I would either go pick it up or my doctor would or he would mail it to me - he works about an hour and a half away. Very nice guy. I never trusted ordering on line but then I didnt have too so I have no experience with it.