Safety, Risks, and Contraindications Known and potential adverse effects of SubQ gluathione include: Injection site reactions: redness, swelling, induration (for a full breakdown of whats normal versus what requires attention, see my article about peptide injection site reactions) Skin rashes Rare but serious: Stevens-Johnson syndrome has been reported in case studies linked to injectable glutathione use IV glutathione has triggered bronchospasm in asthma patients
People taking high-dose B12 supplements (1,000 to 5,000 mcg daily), receiving B12 injections (cyanocobalamin or methylcobalamin), or consuming heavily fortified foods can easily push their serum levels above 900 pg/mL
Researchers noted that there were less fine lines, wrinkles, and hyperpigmentation as well
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