Johnson, A.B., et al
Although adverse reactions to intravenous, intramuscular or subcutaneous injection of 0.9% benzyl alcohol are not known to occur in man, experimental studies of small volume parenteral preparations containing 0.9% benzyl alcohol in several species of animals have indicated that an estimated intravenous dose up to 30 mL may be safely given to an adult without toxic effects
The cheapest-per-mg product (Glacier 60 mg oral capsules) is the same format that the published pharmacology says lacks oral bioavailability
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Common solvents used in peptide research include bacteriostatic water, sterile water for injection, and dilute acetic acid for certain peptides
When B12 levels become low, symptoms can affect daily life, making it harder to concentrate, stay energised, or feel like yourself