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A complete Certificate of Analysis should show an HPLC result with a single dominant peak at the stated purity, a mass-spectrometry result confirming the molecular weight matches the intended compound, a bacterial endotoxin result from the Limulus Amebocyte Lysate (LAL) assay, the batch or lot number, and the name of an independent testing laboratory with a recent date
Methylcobalamin is less stable than cyanocobalamin and is particularly susceptible to photodecompositionthat is, destruction from light exposure
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he describes personal experience, not a protocol for everyone
However, it is so important to talk to your doctor first, especially if you have any underlying medical conditions or take medications
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