Overview
Free-form glycine paired with collagen for connective tissue synthesis.
- Dietary protein from animal sources (meat, fish, eggs, dairy) and plant sources (soy, legumes, grains)
- Free-form amino acid powders and capsules
- Targeted pre-workout, recovery, or sleep formulations
- Free-form crystalline powder
- Capsules or tablets
- Pre-mixed recovery or hydration beverages
- Time-release formulations
Forms & variants of Glycine
Different chemical forms of Glycine behave differently. Browse each form's mechanism, bioavailability, and best-use context.
Mechanism of action
Glycine is rate-limiting for collagen triple helix formation.
- · Glycine is rate-limiting for collagen triple helix formation
Effects on the body
Organ system effects
Glycine (Collagen Stack) supports collagen synthesis, antioxidant defense, or barrier function in skin and integumentary tissues.
Evidence-based benefits
Supports collagen synthesis when paired with vitamin C
Moderate evidencePotential side effects
- · GI upset
Drug interactions
Supplement interactions
- Collagen peptidesProvides amino acid substrate for connective tissue synthesis.
- Vitamin CRequired cofactor for collagen hydroxylation.
No specific avoidances listed.
Dosing & bioavailability
Where to buy
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Third-party testedIndependently verified Glycine (Collagen Stack) — look for USP, NSF, or Informed Sport seals on the label for purity and dose accuracy.Glycine (Collagen Stack) third party tested NSF
CapsulesPre-measured Glycine (Collagen Stack) capsules — easiest for travel and consistent daily dosing without scoops or scales.Glycine (Collagen Stack) capsules
PowderBulk unflavored Glycine (Collagen Stack) powder — best cost-per-gram and flexible dosing for stacking or mixing into drinks.Glycine (Collagen Stack) powder unflavored
Best sellersMost-purchased Glycine (Collagen Stack) products on Amazon — a quick way to see what's reviewed widely before you commit.Glycine (Collagen Stack) best sellerScientific evidence8Show studiesHide studies
Glycine intake and collagen turnover
Meléndez-Hevia E, et al.
Metabolic balance analysis.
Endogenous glycine production insufficient for collagen needs.
PubMed: Glycine (Collagen Stack) — Supports collagen synthesis when paired with vitamin C
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PubMed: Glycine (Collagen Stack) — randomized controlled trial
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PubMed: Glycine (Collagen Stack) — meta-analysis
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PubMed: Glycine (Collagen Stack) — pharmacokinetics
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PubMed: Glycine (Collagen Stack) — safety adverse events
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PubMed: Glycine (Collagen Stack) — dose response
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Google Scholar: Glycine (Collagen Stack) — clinical evidence
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Cross-database citation index for Glycine (Collagen Stack) as it relates to "clinical evidence".
Includes preprints, theses, and journal articles. Useful for tracking citation counts and follow-on work.