where to put b12 injection How self-inject intramuscular vitamin - Overview Where to Inject Vitamin B12

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Oral supplements, on the other hand, are taken as tablets or liquids and must pass through the stomach and intestines, where absorption can be slower and weaker, especially for patients with digestive problems

Data come from animal studies (often using subcutaneous injections) and user reports

Individuals with Gastrointestinal Disorders: Such as Crohns disease, celiac disease, atrophic gastritis, or those who have had gastric bypass surgery or other stomach/intestinal resections, which can interfere with B12 absorption

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