Lactobacillus acidophilus is a type of good or friendly bacteria that aids in healthy digestion and absorption, according to MedlinePlus. Aside from helping the body break down food and absorb nutrients, Lactobacillus acidophilus is also effective in treating diarrhea, irritable bowel syndrome, Crohn's disease, skin disorders, vaginal infections and canker sores. Lactobacillus acidophilus has various preparations; it can be found in tablets, food supplements and fermented food items such as milk and yogurt. Lactobacillus acidophilus has several side effects.
Increased Intestinal Gas
An increase in intestinal gas formation, commonly known as bloating, is one of the possible side effects of Lactobacillus acidophilus, notes MedlinePlus. Normally, the body produces 1 to 3 pints of intestinal gas within a 24-hour time frame. This gas is usually odorless and is comprised of oxygen, carbon dioxide, nitrogen, hydrogen and methane. Intestinal gas can be expelled through the mouth in the form of belching or the rectum as flatulence. The average person passes gas approximately 14 times a day. When Lactobacillus acidophilus breaks down food, it constantly releases small amounts of gas, which can build up in the intestines causing bloating. The gas it releases may contain sulfur, which gives it an unpleasant smell and odor.
Diarrhea
Diarrhea is among the potential side effects of Lactobacillus acidophilus, according to the National Center for Complementary and Alternative Medicine (NCCAM). Diarrhea is a mild and temporary side effect of probiotics, or good bacteria, including Lactobacillus acidophilus. Gas production in the gastrointestinal tract increases as Lactobacillus acidophilus grows, multiplies, breaks down and dies out. Gas buildup can irritate the stomach and intestines causing frequent, loose and watery stools. Diarrhea resolves on its own and should stop shortly after it starts.
Minor Infections
One of the side effects of lactobacillus acidophilus is minor infections, according to the NCCAM. Lactobacillus acidophilus, despite being a good and friendly bacterium, is still a microorganism that can grow excessively, most especially in patients with weak and compromised immune systems. Patients with HIV, AIDS, or those under chemotherapy and taking anti-cancer medications are at risk for developing minor infections such as oral thrush and mouth sores. Lactobacillus acidophilus is generally safe for the body. Minor infections rarely occur. Consulting with a doctor before taking this probiotic ensures safety.



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