Since collagen type II contains chondroitin and glucosamine, large doses might lead to the same side effects as those seen with chondroitin and glucosamine supplements. These side effects include nausea, heartburn, diarrhea and constipation, drowsiness, skin reactions, and headache.
A stool analysis is a series of tests done on a stool (feces) sample to help diagnose certain conditions affecting the digestive tract . These conditions can include infection (such as from parasites, viruses, or bacteria), poor nutrient absorption, or cancer.
Other conditions that can cause blood in the stool include: 1  Hemorrhoids. 2  Anal fissures. 3  Colon polyps. 4  Peptic ulcers. 5  Ulcerative colitis. 6  Gastroesophageal reflux disease (GERD) . 7  Crohn's disease. 8  Use of aspirin or nonsteroidal anti-inflammatory drugs (NSAIDs) .olorectal cancer affects the large intestine (colon) and the rectum. There are three kinds of stool tests: 1  Fecal occult blood test (FOBT). 2  For this test, you put tiny samples of your stool on a special card or cloth and send it to a lab. 3  The lab uses chemicals to find blood that you can't see with the naked eye.