b12 injection 2000mcg dosage Vitamin Injections: Ideal & Frequency for Men's Health B12 Shot Guide: Benefits, Dosage

No, you cant overdose, since B12 is water-soluble and any excess will be out in your urine in no time

Oral administration of high-dose vitamin B 12 (1 to 2 mg daily) is considered as effective as intramuscular administration for correcting anemia and neurologic symptoms Despite many studies suggesting oral administration of vitamin B 12 to be easy, effective and less costly than intramuscular administration, debate surrounds the effectiveness of the oral route

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Individuals with Poor Absorption: People with low stomach acid, or those who have had certain surgeries (like gastric bypass), may struggle to absorb B12 from food and would benefit from injections