Senna Side Effects

Possible side effects of senna are listed below. Call your doctor if these side effects are severe or still present after a few days.

• Stomach pain
• Stomach cramps
• Nausea
• Diarrhea
• Brown urine
• Lightheadedness 

Some of the adverse effects of senna can be more serious. Stop taking senna and seek medical help or contact your doctor right away if you experience:

• Rectal bleeding

The above list may not include all the potential side effects of senna. Tell your doctor if the side effects are unusual or severe or if 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.

Senna Overdose: In case of an overdose, get medical help immediately. Call your doctor or contact a poison control center right away (the national poison control center number is 1-800-222-1222). If a person has trouble breathing, cannot be awakened, or has had a seizure, call 911. 

Source: FDA