Collagen and Glycine
Glycine makes up about a third of collagen, so supplementing it provides raw material that collagen synthesis depends on.
Collagen
The structural protein for skin, joints, and connective tissue.
Glycine
A calming amino acid for sleep, collagen, and metabolic health.
Great to combine
These two are frequently stacked together; they complement each other and are commonly taken at the same time.
How to take them
Collagen
- Dose
- 2.5–15 g of hydrolyzed peptides per day: 2.5–5 g for skin, 10–15 g for joints and recovery
- Timing
- Any time of day, with or without food; consistency matters more than timing
Glycine
- Dose
- 3 g before bed for sleep; up to 10 g/day for collagen support
- Timing
- 30–60 minutes before bed for sleep; with meals for collagen/metabolic goals
Buying Collagen and Glycine?
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Frequently asked
Can you take Collagen and Glycine together?
Yes, they are commonly taken together. Glycine makes up about a third of collagen, so supplementing it provides raw material that collagen synthesis depends on.
What's the best time to take Collagen and Glycine?
Around the same time works well. Collagen: Any time of day, with or without food; consistency matters more than timing. Glycine: 30–60 minutes before bed for sleep; with meals for collagen/metabolic goals.
How do Collagen and Glycine interact?
Synergy: Work better together than alone. Glycine makes up about a third of collagen, so supplementing it provides raw material that collagen synthesis depends on.
Related pairings
Collagen + Vitamin C
Vitamin C is a required cofactor for the enzymes that build collagen, so adequate vitamin C supports both dietary collagen and the body's own production.
Collagen + Glucosamine
Collagen and glucosamine target cartilage and joint comfort through different mechanisms and are commonly stacked for joint support.
Glycine + Magnesium
A sleep pairing with a built-in shortcut: magnesium glycinate is magnesium bound to glycine, so that form already delivers both. A standalone 3 g dose before bed (the amount sleep studies used) tops up the glycine, lowering core body temperature while magnesium relaxes muscles and calms the nervous system.
Glycine + NAC
NAC provides cysteine while glycine provides another rate-limiting precursor; together they are more effective at raising glutathione than either alone (GlyNAC protocol).