I check these links often so they should be working.
There are many, many different enzyme supplements on the market. Check your local healthfood store to see what they have. You can spend a lot of money on these supplements and each one tells you that they are the best.
Ultra-Zyme is a very good digestive enzyme that I've been using for years and it's reasonably priced. These are very good prices on the 180 tab size. There is a 90 tab size but I can find them in stores for similar prices. The 180 tab size is a much better deal.
Ultra-Zyme contains the different enzymes you need and specific ones are coated to be released in the small intestine and/or 50% in the stomach and 50% in the intestine. Directions say to take 1 or 2 tablets daily, so at 1 a day a 180 tab bottle is good for half a year and at 2 a day, 3 months.
That's not a lot of money. You can spend a small fortune on supplements depending what you buy and many have you taking them at each meal. At about $23 per bottle and that includes shipping, these are good deals!