I have used NOW's pepzin, but this Doctor's brand is surely better since it only offers Pepzin whereas NOW includes 2 other herbs and additives... It may sound confusing why Doctor's is better, but after using NOW's for 2 months I have developed moderate stomach spasms whenever I take the pills due to either slippery elm or other herbs or additives in NOW's product...I suspect this is allergic reaaction... i can't take the product anymore. When I want to buy Pepzin, I want to buy Pepzin,.. not a combination of other things that really doesn't help me with stomach illness. Doc's product offers ony Pepzin and that is all I need!

I started taking 1 a day and 2 on a second day... and kept it at 4-5 by the end of the week. then quickly reduced it to only 1 pill a day. Even on 1 pill, I started feeling sleepy fatigued and drained. it feels like it's really irritating my stomach. I can take only 1 pill and i would feel fatigued for the whole day. I thought it was the die offs.. it partly is, however, I noticed my stomach started to hurt. I think this stuff was ready to cause heartburn. I did experience stomach burning and short episodes of acid reflux. (usually burning/cramp feeling leads to reflux due to digestion impairment) I have taken this product to manage stomach muscle spasms, it does seem to work to reduce spasms, side effects are not something I can deal with... since I have an chronic ulcer problems. I would not recommend that you don't have ulcer or sensitive stomach when taking this product. This product is not for everyone, I would recommend that you try a smaller volume of PD before you buy a stockpile.