What side effects may I notice from receiving Effer-K?

Side effects that you should report to your doctor or health care professional as soon as possible:

-allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
-black, tarry stools
-breathing problems
-confusion
-fast, irregular heartbeat
-feeling faint or lightheaded, falls
-numbness or tingling in hands or feet
-unusually weak or tired
-weakness, heaviness of legs

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

-diarrhea
-nausea, vomiting
-
stomach pain

This list may not describe all possible side effects for Effer-K. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.