This supports the potential of compounded cyanocobalamin/SNAC as a practical alternative for patients who are injection/needle-averse , non-compliant with injections, or seeking a more convenient therapy even if their providers have traditionally used methylcobalamin in injectable form
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J Clin Invest 33:989994 Deray G, Rieu M, Devynck MA, Pernollet MG, Chanson P, Luton JP, Meyer P (1987) Evidence of an endogenous digitalis-like factor in the plasma of patients with acromegaly
Topical GHK-Cu serum shelf life Pre-made commercial serums: Usually 6-12 months unopened 3-6 months after opening Check manufacturer recommendations Refrigerate after opening extends life DIY serums (mixing powder with carrier): Shorter shelf life than commercial 2-4 weeks typical (no preservatives) Must refrigerate Discard if color changes Factors affecting topical shelf life: Preservatives: Extend significantly pH: Neutral pH more stable Carrier: Some better than others (hyaluronic acid, glycerin good) Storage: Cool, dark, sealed Contamination: Sterile technique critical Best practices for topical GHK-Cu: Buy small bottles (use within 3-6 months) Refrigerate after opening Don't double-dip (pour into hand, don't touch dropper to skin) Watch for color changes (brown = oxidized) Replace every 6 months even if looks fine See our how to reconstitute peptides , bacteriostatic water for peptides , and how long reconstituted peptides last in fridge
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