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Injection frequency considerations Unlike testosterone with its various ester formulations affecting release timing, HCG has a relatively short half-life requiring multiple weekly administrations

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In the German manufacturers PIL (Patient information leaflets) for hydroxocobalamin they state that B12 can be given subcutaneously or intramuscularly, so why when other countries understand that B12 can be given by both routes did the UK only license it for intramuscular

Athletes subject to anti-doping rules should be aware of the current regulatory landscape in their sport

This is why progress photos matter