The main side effects of probiotics are flatulence and bloating, according to MedicineNet. Side effects of probiotics are rare; thus, probiotics are generally safe for most healthy adults to use, states Mayo Clinic. More »

Some side effects of probiotics include gas, bloating, upset stomach and diarrhea. These symptoms typically do not last more than a couple of days after an individual starts using them. Probiotics may cause an allergic r... More » Health Medications & Vitamins Vitamins & Supplements

Although probiotics are generally considered safe, some individuals experience negative side effects such as gas, bloating, upset stomach or diarrhea for the first few days after taking them as stated by WebMD. Probiotic... More » Health Medications & Vitamins Vitamins & Supplements

The main side effects of D-mannose include loose stools and bloating, according to WebMD. It is possible that D-mannose can make it more difficult to control blood sugar, and it may also cause kidney damage. D-mannose is... More » Health Medications & Vitamins Side Effects

The main side effects of a vitamin B12 injection include redness at the injection site, mild diarrhea, itching or a feeling of swelling all over the body, according to MedicineNet. If these side effects persist or get wo... More »

Common side effects of the consumption of probiotics such as Jarro-Dophilus include bloating and flatulence, says MedicineNet. These side effects tend to go away with continued use of the probiotic. Probiotics contain or... More »

The main side effects of Deanxit include weakness, tiredness, anxiety, insomnia and dry mouth, according to Everyday Health. More serious side effects are nausea, difficulty breathing, blurred vision and dizziness. Deanx... More »