Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have:
decreased sensation to touch, temperature, and vibration;
loss of balance or coordination;
numbness in your feet or around your mouth;
clumsiness in your hands; or
feeling tired.
Common side effects may include:
nausea;
headache;
drowsiness; or
mild numbness or tingling.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Vitamin B6 side effects (more detail)
