Vitamin B12 Side Effects: Common, Severe, Long Term - Drugs.com
Oct 29, 2025 · Learn about the side effects of Vitamin B12 (cyanocobalamin), from common to rare, for consumers and healthcare professionals.
Too Much B12 Symptoms: 5 Warning Signs You've Gone Overboard …
Apr 30, 2025 · Taking too much vitamin B12 can lead to unwanted side effects even though many people don’t realize this vitamin can cause problems in excess. While B12 deficiency gets lots of …
Vitamin B12 Sublingual Solution (Drops) - Cleveland Clinic
Megaloblastic anemia An unusual or allergic reaction to vitamin B12, cobalt, other medications, foods, dyes, or preservatives Pregnant or trying to get pregnant Breast-feeding How should I use this …
Vitamin B12: Overview, Uses, Side Effects, Precautions ... - WebMD
Learn more about Vitamin B12 uses, effectiveness, possible side effects, interactions, dosage, user ratings and products that contain Vitamin B12.
What are B12 sublingual side effects? - WellCalm
Aug 4, 2025 · While mild side effects like digestive upset or skin reactions are possible, serious adverse effects are rare. By understanding the potential side effects, adhering to recommended dosages, and …
Vitamin B12 Side Effects - Healthline
Feb 24, 2025 · Taking too much can cause side effects like nausea, headache, dizziness, and, in some cases allergic reactions. Everyone needs vitamin B12, and most people get enough through their diet.
Vitamin B-12 - Mayo Clinic
Aug 13, 2025 · Vitamin B-12 supplements also are suggested for women who are pregnant, who are breastfeeding and not using any formula, or who follow vegetarian or vegan diets. Taking high doses …
Oral Cyanocobalamin (Vitamin B-12 Pill): Side Effects & Dosage
Oral cyanocobalamin (Vitamin B12) is prescribed to prevent or treat vitamin B12 deficiency and to treat hyperhomocysteinemia. Common side effects of cyanocobalamin include joint pain, dizziness, …
Cyanocobalamin (B12) Sublingual Tablets - Drugs.com
Easy-to-read patient leaflet for Cyanocobalamin (B12) Sublingual Tablets. Includes indications, proper use, special instructions, precautions, and possible side effects.
B12 Side Effects: Too Much of a Good Thing? - Greatist
Aug 6, 2024 · B12 oral supplement side effects B12 supplements come in a variety of forms, including capsules, tablets, soft gels, gummies, and drops or sprays.
Vitamin B Complex - Uses, Side Effects, and More - WebMD
Aug 12, 2025 · Find patient medical information for Vitamin B Complex on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings
What Causes B12 Side Effects? - swintegrativemedicine.com
Are you having B12 side effects, like heart palpitations or digestive issue after taking B12 or B vitamins? In this article, we look at these side effects and what typically causes them.