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I take this one https://www.amazon.co.uk/gp/product/B004KRLF7G/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1. Seems to be working as when I stopped for 9 months I developed a nasty deficiency.
pit
I wanna buy a B12 supplement for some nerve repair, you guys are smashing those right? Is there a well-known better option?
Sounds like a combo of methylcobalamin and adenosylcobalamin versions is best:
https://www.ncbi.nlm.nih.gov/pubmed/25117994
Most of the edible blue-green algae (cyanobacteria) used for human supplements predominantly contain pseudovitamin B(12), which is inactive in humans.
https://www.ncbi.nlm.nih.gov/pubmed/17959839
There's tonnes of brands out there though.