I am a 35-year-old male, and I am 5'09" tall and weigh 79.37 Ibs. I feel that my digestion is very slow for the past 13 years. I am often constipated, and my appetite is bad. I feel nauseous, burp a lot, and find it hard to digest sweets. I tried taking Rabeprazole and enzymes for this problem, but I have not tried taking any medication continuously.