B12 self-injection, sourced.

Plain-language guides on B12 — needle and pen-needle selection, injection technique, storage, and the published evidence behind each. Sourced against the FDA, EMA, NICE, NHS and peer-reviewed literature.

§ Articles · 1 ARTICLE

B12 · Forms

Hydroxocobalamin vs cyanocobalamin vs methylcobalamin: which B12 injection is right?

What the UK NHS, BNF and BSH guidelines say about each form, the pharmacokinetic differences that actually matter, and where the supplement industry has overstated the case for methylcobalamin.

Imogen Whitcombe 2026-04-25

§ Supplies

29G supplies for B12.

Sterile, single-use, ISO 7864 / ISO 11608-2 certified, shipped from Spain.

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