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"Some people are sensitive to the free glutamic acid in collagen protein and may find they get mild headaches or have difficulty sleeping when they consume too much or take collagen too close to bedtime," says registered dietitian Pamela Schoenfeld, MS RD LDN
[DOI] [PMC free article] [PubMed] [Google Scholar] Kocsy G, Szalai G, Galiba G
[40] Inhibited glucose uptake
Ordering from an FDA-registered 503B outsourcing facility, rather than a standard 503A pharmacy, provides a higher level of quality assurance because 503B facilities must comply with current Good Manufacturing Practice (cGMP) standards
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