I have been on Zen Pep (20000) 3xday with meals, and it is expensive -$194 month is my co-pay (it was $394/month till I was able to get it from the hospital by mail order). Also taking the smaller dose (10000) 3xday with snacks, and this is $94/month. But my doctor wants me to up the dosage of enzymes, I am still losing weight, so taking more might help. My dietitian said I could try an otc enzyme supplement - Vital Nutrients, you can get it through Amazon - $40/90 pills - taking this as the second pill at meals. It adds up, but the mail order option, plus the otc supplement help to keep the cost down a little. I just started taking the Vital Nutrients yesterday so don’t know yet if it’s working.