Melatonin vs Glycine
Side-by-side comparison of Melatonin and Glycine: mechanism, half-life, dose range, safety profile, and vendor pricing.
Price snapshot
Melatonin
Glycine
Melatonin
Melatonin (chemical name N-acetyl-5-methoxytryptamine) is an endogenous neurohormone synthesized primarily by the pineal gland and, in smaller quantities, by the retina, gut, skin, bone marrow, lymphocytes, and…
Lowest listed price: $44.99 across 1 listing
Full Melatonin profileGlycine
Glycine is the simplest amino acid—a single hydrogen atom replacing the typical side chain found in other proteinogenic amino acids—yet it performs an wide range of biological functions. Despite being classified as…
No vendor price on file.
Full Glycine profileSide-by-side comparison
| Attribute | Melatonin | Glycine |
|---|---|---|
| Category | Sleep & Circadian | Foundational |
| Research Stage | Preclinical | Preclinical |
| Mechanism of Action | Melatonin operates through at least four distinct mechanistic pathways that together account for its diverse physiological effects: (1) MT1/MT2 receptor activation for circadian and sleep effects; (2) nuclear receptor (ROR/RZR) modulation for anti-inflammatory… | Glycine acts through multiple distinct and non-redundant mechanisms, explaining its extraordinarily broad range of biological effects. Understanding these mechanisms clarifies when supplementation is likely to produce clinically meaningful benefit versus when… |
| Half-Life | — | — |
| Typical Dose Range | — | — |
| Dosing Frequency | — | — |
| Administration | — | — |
| Side Effects | Melatonin has an exceptionally wide safety margin and has been used in clinical doses up to 300mg/day in oncology protocols without serious acute toxicity. However, side effects are common at supraphysiological doses (3mg and above) and are often misattributed… | Glycine has an exceptional safety profile across extensive clinical use. Doses up to 60 g daily have been used in schizophrenia trials without systematic serious adverse effects. For typical supplementation doses (3-15 g daily), side effects are uncommon and… |
| Molecular Weight | — | — |
| Common Vial Sizes | — | — |
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Frequently asked
What's the difference between Melatonin and Glycine?
Melatonin is a sleep & circadian that melatonin operates through at least four distinct mechanistic pathways that together account for its diverse physiological effects: (1) mt1/mt2 receptor activation for circadian…. Glycine is a foundational that glycine acts through multiple distinct and non-redundant mechanisms, explaining its extraordinarily broad range of biological effects. understanding these mechanisms clarifies when…. The two differ in mechanism, half-life (not reported vs not reported), and typical dose range.
Which has the longer half-life, Melatonin or Glycine?
Melatonin has a half-life of not reported. Glycine has a half-life of not reported. Longer half-lives generally mean less frequent dosing but slower on/off kinetics.
Can you stack Melatonin and Glycine?
Stacking depends on mechanism overlap, safety profile, and goals. Melatonin and Glycine should only be stacked after reviewing each compound's individual protocol page, side effect profile, and any published interaction data. Use the BodyHackGuide stack builder for a structured review before combining research compounds.
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Research use only. BodyHackGuide is a research and price-comparison reference. The compounds discussed on this page are not approved by the FDA for human consumption and are sold strictly for laboratory research. Prices shown are pulled from vendor listings tracked on BHG and are subject to change. We earn an affiliate commission on some outbound clicks, and every vendor is ranked on the same public, reproducible methodology. See editorial standards and affiliate disclosure.