vitamin b12 self injections dosage inject yourself How to administer subcutaneous B12 injection., 1. Withdraw proper from vial B12 Shots at Home: How,

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Some common side effects include- Injection site reactions (pain, swelling or irritation), headache, nausea, dizziness or lightheadedness, fatigue or weakness

Hydroxocobalamin, the form most commonly used in the UK, may cause: Injection site reactions (pain, redness, or swelling) Temporary reddish discolouration of urine Rarely, hypersensitivity reactions Very rarely, hypokalaemia in severely deficient patients when treatment is initiated (potassium levels should be monitored in severe deficiency) B12 injections are considered very safe, with no upper tolerable limit established, as excess B12 is excreted in urine

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