l-carnitine dopinglijst Carnitin 1000: Sports drink and drinking ampoule with from SPONSER Argivit - Metabolism - Aesculapius

Topical GHK-Cu has the clearest human data

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Spirulina is not a good source of B12 and only contains B12 analogues Because vitamin B12 is water-soluble it's extremely hard to overdose, and because the body is quite inefficient at absorbing B12, supplements often contain 10,000% RDA, sometimes even 100,000% RDA, to try and ensure the body actually absorbs some of it