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Conversely, low LH with low testosterone suggests continued hypothalamic or pituitary suppression that PCT should address

Vitamin B12 is the most chemically complex of all the vitamins, and cyanocobalamin and hydroxycobalamin are synthetically derived therapeutic forms of vitamin B12.6 Hydroxycobalamin protein binding capacity is greater than that of cyanocobalamin and both of them may cause allergic reactions.6 Vitamin B12 may lead to allergic reactions because of its cobalt molecule, molecular complexity or high molecular mass

Deficiency can lead to demyelination, resulting in peripheral neuropathy, balance problems, cognitive impairment, and in severe cases, subacute combined degeneration of the spinal cord

If you start at full dose and develop a headache, you cannot tell if the peptide caused it or if you would have had that headache anyway