max dose b12 injection Cyanocobalamin (B12) 1000 mcg/mL, Multiple Vial 30 mL B12 Shots Dosage for Adults:

High-dose oral supplementation may be another treatment option, because consuming 1,000 g (1 mg) per day of vitamin B 12 orally should result in the absorption of about 10 g/day (1% of dose) by passive diffusion

Start my free visit Illustration only not the actual vial

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While this represents a higher per-treatment cost than oral supplements, the superior absorption and reduced frequency often make injections cost-competitive over time, particularly for those who dont absorb oral forms effectively

Sublingual Supplements : These are absorbed directly into the bloodstream through the tissues under the tongue, potentially reducing the risk of allergic reactions