Medication Guide App

Saw palmetto Side Effects

It is possible that some side effects of saw palmetto may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.

Applies to saw palmetto: oral capsule

Get emergency medical help if you have any of these signs of an allergic reaction while taking saw palmetto: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop using saw palmetto and call your doctor at once if you have any of these serious side effects:

  • weakness or fainting;

  • black, bloody, or tarry stools;

  • coughing up blood or vomit that looks like coffee grounds;

  • pain or swelling in your breasts or testicles;

  • chest pain;

  • fast, slow, or uneven heart rate;

  • easy bruising or bleeding; or

  • nausea, stomach pain, loss of appetite, itching, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).

Less serious side effects of saw palmetto may include:

  • nausea, vomiting, stomach pain;

  • diarrhea or constipation;

  • bad breath;

  • headache;

  • dizziness;

  • sleep problems (insomnia);

  • muscle pain;

  • depressed mood; or

  • increased or decreased interest in sex;

This is not a complete list of side effects and others may occur. Tell your doctor, pharmacist, herbalist, or other healthcare provider about any unusual or bothersome side effect.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.