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If you're a strict vegetarian or vegan, you're at higher risk of B12 deficiency since plant-based foods don't naturally have B12
Protect from moisture, heat, and direct light exposure
Split the load and you can often sit each compound at a comfortable middle amount while the combined effect still lands higher than either could alone
Lee JY, Choo JE, Choi YS, Park JB, Min DS, Lee SJ, et al
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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