Weight Loss Home > Alli Side Effects
In clinical studies, common side effects of Alli included stomach pain, gas, oily spotting, and diarrhea. Fortunately, side effects can be controlled (if not avoided altogether) by watching the amount of fat you eat. Most people tolerate the drug without problems. Contact your healthcare provider immediately if you experience serious side effects, such as kidney stones, severe stomach pain, or signs of an allergic reaction.
An Introduction to Alli Side Effects
Common Side Effects of AlliAlli is a non-prescription weight loss drug. With prescription medications, the manufacturers must provide "prescribing information" that includes detailed information about side effects. However, such information is not available for most non-prescription medications, including Alli.
- Abdominal pain (stomach pain) -- in up to 20.1 percent of people
- Fecal urgency (an urgent but controlled need to have a bowel movement) -- up to 18.8 percent
- Gas -- up to 18.6 percent
- Oily spotting (uncontrolled anal oil seepage) -- up to 17.7 percent
- Gas with a small amount of oil or stool -- up to 17.2 percent
- Fatty or oily stool -- up to 17.2 percent
- Diarrhea -- up to 11.9 percent
- Oily evacuation (bowel movements of just oil, without stool) -- up to 11.6 percent
- Sinus infection -- up to 10.6 percent
- Soft stool -- up to 10.1 percent.
- Increased frequency of bowel movements
- Uncontrolled, spontaneous bowel movements (known as fecal incontinence)
- Back pain.