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Topical GHK-Cu remains localized in dermal tissue for 4896 hours with negligible systemic absorption, while subcutaneous and IV routes produce measurable serum exposure lasting 68 hours and 34 hours respectively

Lebers Disease: People with Lebers disease, a rare inherited eye condition, should avoid vitamin B12 injections

How to Meet Your Daily B12 Requirements Meeting the UK's recommended 1.5 mcg daily B12 intake is straightforward for most people consuming animal products, as vitamin B12 is found almost exclusively in foods of animal origin

In general, excess B12 is flushed out by your body and is unlikely to cause harm

Nazeer, M

Our GHK-Cu serums are available at meaningful concentrations that can support your cosmetic goals