What Happens If you Swallow Sublingual B12? (Expert Answer)

Short Answer: If you accidentally swallowed sublingual B12, it will be absorbed through your digestive system without serious harm, but the absorption might be less effective than if taken sublingually.

Sublingual B12 is a form of vitamin B12 that is designed to be absorbed under the tongue rather than through the stomach.

This method allows the vitamin to directly enter the bloodstream, potentially offering a more efficient absorption rate.

If you accidentally swallowed sublingual B12, generally, there should be no serious harm.

The vitamin will simply pass through your digestive system and be absorbed like any other B12 supplement.

However, the absorption might be less effective compared to the sublingual route.

This is because it contains vitamin B12 as the active ingredient.

Vitamin B12 can support red blood cell formation, neurological function, and DNA synthesis.

It’s an essential nutrient that helps keep your body functioning properly.

It is quite uncommon to swallow sublingual B12 due to its intended use being absorption under the tongue.

People usually follow the instructions provided with the medication.

You can relax if you’ve swallowed sublingual B12; it’s unlikely to cause any issues.

If you experience any discomfort, such as a mild upset stomach or flushing, it’s usually temporary.

To avoid accidental swallowing, place the sublingual B12 under your tongue and wait for it to dissolve completely as directed by the product’s instructions.

Finally, remember, sublingual B12 is a convenient and effective way to ensure you’re getting this crucial nutrient, especially if you have dietary restrictions or absorption issues.

About the Author

Abdur Rahman Choudhury

Abdur Rahman Choudhury is a nutrition coach with over 7 years of experience in the field of nutrition.

He holds a Bachelor's (B.Sc.) and Master's (M.Sc.) degree in Biochemistry from The University of Burdwan, India. He was also involved with a research project about genetic variations in the CYP11A gene among PCOS and Metabolic Syndrome patients.

He has completed the following online courses: Stanford Introduction to Food and Health by Stanford University (US) through Coursera, Certificate in Nutrition from Fabulous Body Inc. (US), Lose Weight and Keep It Off certificate course from Harvard Medical School (US), and Nutrition and Disease Prevention by Taipei Medical University (Taiwan) through FutureLearn.

Abdur currently lives in India and keeps fit by weight training and eating mainly home-cooked meals.

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