Colesevelam (WelChol) Side Effects

Possible side effects of colesevelam are listed below. Call your doctor for medical advice if these side effects are severe or persistent.

• Constipation
• Gas
• Heartburn
• Nausea
• Vomiting
• Diarrhea
• Stomach pain
• Back pain
• Muscle pain
• Weakness

Rarely, colesevelam can cause more serious side effects. Call your healthcare professional right away or seek emergency medical attention if you develop:

• Severe stomach pain with or without nausea and vomiting

The above list may not include all the potential side effects of colesevelam. Contact your health care provider if your side effects are unusual or severe or they do not get better over time. You can also report unusual side effects to the Food and Drug Administration at 1-800-FDA-1088.

Colesevelam (WelChol) Overdose: In case of an overdose of colesevelam, call your doctor immediately. You can also call your local poison control center or the national poison control center at 1-800-222-1222. Call 911 if a person has collapsed, stopped breathing, stopped responding, or had a seizure.

Source: FDA