How do vitamin B12 injections work, and who can actually benefit from them?

Doctors prescribe vitamin B12 shots for people with a B12 deficiency or those with an underlying condition that inteferes with proper B12 absorption.
Business Insider

How to tell if you have a vitamin B12 deficiency and treat it effectively

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Could You Have a Vitamin B12 Deficiency?

A vitamin B12 deficiency can cause cognitive issues, muscle weakness and other problems. Here's how to make sure you're getting enough vitamin B12.
Reuters

U.S. has a plan to start Pfizer vaccine shots in December -Health Secretary Azar

WASHINGTON, Nov 10 (Reuters) - If Pfizer Inc (PFE.N), opens new tab submits the positive initial data from its COVID-19 vaccine trial to health regulators as quickly as expected, the U.S. government ...
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Vitamin B12 Deficiency: Vitamin B12 deficiency is fatal for the body; learn its symptoms and prevention methods

Due to today's unhealthy lifestyle, people often face deficiencies in essential vitamins and minerals. Vitamins are as important as other nutrients for a healthy body. Vitamin B12, also known as ...

Feeling Drained? Here’s the best time and way to take vitamin B12 for maximum energy and better health

Maximizing Vitamin B12 benefits hinges on optimal intake timing and methods. Experts suggest taking B12 supplements on an empty stomach, ideally in the morning, about 30 minutes before breakfast. This ...