Lemons are interesting. I bought lemon juice and planned to take it regularly, but couldn't tolerate the acidity. My vitamin c has citrus bioflavonoids in it. I am not a fan of papaya, molases, or oranges, as they have too much sugar. I like using cinnamon when I want a sweet taste. Cinnamon is antifungal and antibacterial and has no sugar(just a small amount of complx carbs). Licorice root is also sweet and has no sugar.

Raw ginger is the best thing help aleviate digestive problems.
Cayenne is also helpful, especially if the digestive problems
are caused by inadequate stomach hydrochloric acid. Some people believe inadequate acid is the cause of parasite and candida infections. Not getting enough salt intake can also result in inadequate stomach acid.

The trick to eating raw garlic is to eat it after a large meal, eat just one clove(section) per meal. You could start with half a clove) Cut it into small pieces, chew each piece well, and swallow it with plenty of water.
Peppermint is also helpful. Raw ginger is really great stuff. So is raw garlic. I am getting used to the the taste of these and raw jalapeno peppers.