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Morning injection is most common because some users report mild energizing effects that could interfere with sleep if taken late in the day

GHK-Cu vs NAD+ for Anti-Aging: Where the Evidence Actually Stands Neither therapy has large-scale, long-term randomized controlled trial data in humans for anti-aging endpoints specifically

If you're prone to GI side effects, consume a small protein-rich snack (15-20g protein, minimal fat) 30 minutes before injection to buffer the gastric effect without interfering with the meal-timing strategy

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Depending on your diet, absorption, and current levels, they can tell you whether injections, supplements, or a mix makes the most sense for you