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Tested For Athletes
Yes, GHK-Cu is photosensitive, meaning exposure to direct light, especially UV light, can accelerate its degradation
doi: 10.1016/S0140-6736(20)30566-3 308 ZuoL.PratherE
The gap between those two worlds is the entire point of this guide
Your physician will provide detailed instructions regarding proper administration technique, optimal timing for your sleep patterns (typically evening administration), dosing frequency (which may range from nightly to several times per week depending on sleep needs and protocol design), and any cycling strategies
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