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Second, the stomach-based absorption mechanism is highly sensitive to conditions in the gastric environment

Ethics declarations Competing interests SJW is the founder of Ridgeline Therapeutics, HN is a paid employee of Ridgeline Therapeutics and, since manuscript submission, ADW has also become a paid employee of Ridgeline Therapeutics

It maintains the sterility of the solution over multiple withdrawals, which is critical for research integrity

State Lyophilized (short term) Storage 35.6-46.4F (2-8C) for short windows Notes Acceptable for shipment or near-term storage

GHK-Cu cycling: on/off schedules that actually work Continuous year-round dosing is almost never needed