Does B12 Make You Constipated?
Side effects of B12 are uncommon but may include: diarrhea. constipation.

Does B12 affect bowel movements?

However, some people may experience constipation as a result of a vitamin deficiency, such as vitamin B-12 deficiency. In those situations, a vitamin supplement may help relieve constipation. Some vitamins and minerals can cause loose stools or diarrhea, including magnesium and vitamin C.

What are side effects from B12?

High doses of vitamin B-12, such as those used to treat a deficiency, might cause:

  • Headache.
  • Nausea and vomiting.
  • Diarrhea.
  • Fatigue or weakness.
  • Tingling sensation in hands and feet.
Maya Lin-Takahashi

Maya Lin-Takahashi

Consumer Tech & Gadget Reviewer

Maya is a hardware enthusiast who tests and reviews smart home devices, smartphones, wearables, and audio gear. She focuses on practical consumer value and build quality.

Share this article
Twitter Facebook Pinterest