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A 2025 pilot study published in PubMed confirmed short-term tolerance in 2 participants at 20mg intravenously, though the sample size remains too limited for definitive safety conclusions

Beyond-use dating principles from the United States Pharmacopeia General Chapter treat preservative-containing solutions as having longer safe in-use windows than preservative-free ones

That is, both effectively stimulate growth hormone secretion, and each one does so at a complementary rate of time release one sustained, the other immediate

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Moreover, this trial was conducted at a private practice and published in an alternative medicine journal, again raising concerns about bias