Supplementation up to 250mg will likely do no harm but is likely not needed if the intake from diet reaches these levels
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Oral supplements of glutathione are available both over-the-counter and with a prescription, although the digestion process may break down pure glutathione and repurpose it for other uses
The GHK-Cu dosage protocol examples below cover 1.0 mg, 1.5 mg, and 2.0 mg amounts, with matching U-100 syringe units, reconstitution steps, supplies, and research context
Research emphasizes that research grade must be backed by third-party testing (COA) to ensure safety [5]
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