are b12 sprays effective as injections Oral Spray vs Injections: Which is Right for You? can anybody recommend a b12
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The doctors typically use a narrow needle, making the shots painless and barely noticeable
Consider that immediate can range from a few hours to a day post-injection, depending on the individuals metabolism and overall health

doi: 10.1080/19420862.2022.2095949

Upper part of shoulder

Oral supplements are inexpensive up front, but because so little of a swallowed dose is absorbed, some of what you buy is not used by your body
