Image: Peter Dazeley/Getty Images About the Author Marygrace Taylor, Health Writer About the Reviewer Pieter Cohen, MD, Contributor Disclaimer: As a service to our readers, Harvard Health Publishing provides access to our library of archived content
Safety profiles favor l-citrulline for sensitive populations, though both ingredients maintain excellent tolerance when used appropriately
Betaine exerts a preventive effect, even in cases of diabetes caused by arsenic poisoning-induced impaired glucose tolerance (72)
Most are administered via small subcutaneous injection a few times per week, though some are available as nasal sprays (Semax/Selank), oral capsules (Dihexa), or topical formulations (GHK-Cu)
To change B12 dosage from mcg to mL, you need to know the solutions concentration