Glycine & Collagen – Why Glycine Is the Underestimated Game Changer

Collagen Without Glycine? Not Possible.

Anyone who looks into collagen will sooner or later come across an amino acid that rarely stands in the spotlight – but without which nothing works: glycine.

Collagen consists of about one-third glycine. No other amino acid in the human body is so concentrated in a single protein.

The Triple Helix Needs Glycine – at Every Third Position

Collagen has a unique molecular structure: three protein chains that twist together to form a stable triple helix. For this spiral to form, an amino acid small enough must sit at every third position.

Why Glycine, of all things?

Glycine is the smallest of all amino acids – it is the only amino acid that meets this structural requirement. Without enough glycine, the body cannot build a stable collagen structure.

Note: For glycine as a dietary supplement, no health claims are permitted in the EU according to Health Claims Regulation (EC) No. 1924/2006. This article is for general information purposes only.

Glycine: Conditionally Essential – and Often Underestimated

Glycine is officially considered non-essential – the body can produce it itself. However, research shows a more nuanced picture.

The Supply Problem

Estimates suggest that endogenous synthesis is approx. 3g per day – but the estimated total requirement is 10–15g daily. Some scientists therefore refer to glycine as conditionally essential.

Where Is Glycine Found in the Diet?

Animal Sources

• Collagen Hydrolysate: ~20–22g per 100g
• Gelatin: ~19g per 100g
• Pork rind: ~11g per 100g
• Chicken broth (concentrated): ~1–2g per 100g

Plant-Based Sources

Plant-based foods contain very little glycine. Those who eat little meat, bones, or connective tissue consume significantly less glycine through their normal diet than previous generations.

Collagen Hydrolysate: Glycine Already Included

A high-quality collagen hydrolysate powder provides approx. 20–22g of glycine per 100g of product – one of the most concentrated natural sources of glycine available.

Additionally: Pure Glycine Powder

Those who want to specifically increase their glycine intake can additionally supplement with pure glycine powder – calorie-free, additive-free, and tasteless.

Glycine Powder: What to Look for When Buying?

• Purity: 100% glycine – without fillers or flavors
• Solubility: Fine powder dissolves better
• Taste: Naturally slightly sweet – no sweetener needed
• Origin: Made in Germany as a sign of quality

The Ideal Combination

Combines well with collagen peptides and vitamin C – vitamin C contributes to normal collagen formation for the normal function of skin, bones, cartilage, teeth, and gums.*

*Authorized Health Claim according to EU Regulation No. 432/2012. No health claims are authorized for glycine itself.

Conclusion

Glycine is not a trendy nutrient – it is a fundamental biochemical building block without which collagen does not function. Those who take collagen peptides automatically consume glycine. Those who want to specifically increase their glycine intake can additionally supplement with pure glycine powder. Simple. Pure. Biochemically sound.

Frequently Asked Questions (FAQ)

Why is glycine so important for collagen?

Collagen consists of approximately 33% glycine. The triple helix structure of collagen requires an amino acid small enough to fit inside the helix at every third position. Glycine is the only amino acid that meets this condition – without glycine, no stable collagen structure can form.

How much glycine is in collagen powder?

Collagen hydrolysate contains approx. 20–22g of glycine per 100g of product. This makes collagen peptides one of the most concentrated natural sources of glycine available – significantly more than plant-based foods.

Is glycine an essential amino acid?

Glycine is officially considered non-essential, as the body can produce it itself. However, endogenous synthesis is approx. 3g/day, while the estimated total requirement is 10–15g/day. Some scientists therefore refer to glycine as "conditionally essential."

Can I combine glycine powder with collagen?

Yes. Collagen hydrolysate already contains a lot of glycine (~20–22g/100g). Those who additionally supplement with pure glycine powder specifically increase the total intake of this specific amino acid. Both products are well combinable.

Does glycine have a taste of its own?

Yes – glycine naturally tastes slightly sweet. This is due to its chemical structure. No sugar, no sweetener – the sweet taste is natural.

Are there authorized health claims for glycine?

No. For glycine as a dietary supplement, no health claims are permitted in the EU according to HCVO (EC) No. 1924/2006. However, authorized claims exist for vitamin C (collagen formation), zinc (skin, hair, nails), and biotin (skin, hair).