Glycine for Sleep: How One Scoop of Halal Collagen Before Bed Delivers the Studied Dose

Glycine for sleep works at about 3 grams taken 30 to 60 minutes before bed, the dose used in the leading human sleep studies. One 15g scoop of Halal Collagen Peptides delivers 2.91g of glycine, almost exactly that amount, plus 14g of protein from a single ingredient.

What the Glycine for Sleep Research Shows

Glycine helps your body cool down at night, and that drop in core temperature is one of the main switches for deep, restful sleep.

Glycine is an amino acid your body makes on its own and also gets from food, roughly 3 to 5 grams a day from a typical diet. Researchers became interested in it for sleep because of what it does to body temperature in the hours before bed.

In a 2015 animal study in Neuropsychopharmacology, glycine acted on the brain’s master body clock, the suprachiasmatic nucleus. It widened blood vessels near the skin so heat could escape, and core temperature fell, the same cooling pattern that naturally comes before deep sleep.

Human trials back it up. In a 2007 sleep-lab study in Sleep and Biological Rhythms, people with ongoing poor sleep took 3g of glycine before bed. They reported better sleep quality, and sleep-lab recordings showed they reached sleep and deep slow-wave sleep faster, without changing the natural structure of their sleep.

A 2012 study in Frontiers in Neurology cut volunteers’ sleep by 25% for three nights. Those who took 3g of glycine before bed felt less sleepy and less fatigued the next day than those who took a placebo.

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How Much Glycine for Sleep: The 3 Gram Standard

The human sleep studies used 3 grams of glycine, and one scoop of Halal Collagen Peptides delivers 2.91 grams.

Collagen is one of the richest natural sources of glycine. In Halal Collagen Peptides, glycine makes up about one fifth of every scoop’s amino acids, more than any other amino acid on the label.

Simply Halal prints the full amino acid profile on the bag, so you know exactly what you are getting each night. Here are the top eight per 15g scoop, straight from the label:

That is 2.91g of glycine alongside 1.95g of proline and 1.82g of hydroxyproline, with no fillers, flavors, or sweeteners taking up space in the scoop. See the full profile on the Halal Collagen Peptides page.

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Collagen Before Bed: What the 2024 Study Found

A 2024 randomized trial gave 15g of collagen peptides one hour before bed, exactly one scoop of Halal Collagen Peptides, and recorded fewer wake-ups through the night.

Published in the European Journal of Nutrition, the double-blind study followed 13 physically active men with sleep complaints. Each took 15g of collagen peptides or a placebo one hour before bed for seven nights, then switched.

On collagen nights, the men woke up less often, measured both in a sleep lab and in their own sleep diaries. The morning after, they also scored better on a focus and attention test.

The researchers linked the results to collagen’s high glycine content. They also suggested collagen may offer something glycine alone does not, through its effects on nerve growth factors tied to sleep.

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How to Take Collagen Before Bed

Stir one 15g scoop into a warm, caffeine-free drink 30 to 60 minutes before you plan to sleep.

That timing matches the research: the glycine trials used 30 to 60 minutes before bed, and the collagen study used one hour. Keep it caffeine-free so the drink works with your wind-down, not against it.

Good bedtime bases include warm milk, oat milk, chamomile tea, or warm water with a squeeze of lemon. Halal Collagen Peptides is unflavored, so it takes on whatever you mix it into. For more ways to build it into your day, see the daily collagen routine guide.

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Why Simply Halal Collagen Fits Your Bedtime Routine

Halal Collagen Peptides is a single ingredient, published to the gram, and halal-certified from production to bag.

Chef Maher Fawaz spent 28 years in professional kitchens, including as senior executive chef at Do & Co, where he was responsible for Delta Airlines catering. Those years taught him which ingredients work together to get the most nutrition into every serving, and he brought that knowledge to every Simply Halal formula.

He spent three years in research and development and ran more than 160 lab tests before the first product launched, working with Michigan State University’s Product Center along the way. The brand itself began with co-founder Fatima Hammoud’s healing journey with homemade halal bone broth.

His standard is simple: if he would not feed it to his own children, he will not feed it to the community. That is why Halal Collagen Peptides is just one ingredient, South American grass-fed bovine collagen, with zero fillers, and it is gluten-free, allergen-free, keto-friendly, and GMO-free.

It is halal-certified from production to bag, including the packaging itself, and made in a Michigan-based GMP-certified facility. Learn more about what ISA Halal certification means for collagen.

What customers say about Halal Collagen Peptides

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Glycine for Sleep FAQs

Quick answers on glycine, collagen, and your bedtime routine.

How much glycine is in a scoop of collagen?

One 15g scoop of Simply Halal Collagen Peptides contains 2.91g of glycine, about one fifth of its amino acids. That is within a tenth of a gram of the 3g dose used in the human glycine sleep studies.

When should I take collagen for sleep?

Take it 30 to 60 minutes before bed. The glycine sleep trials used that window, and the 2024 collagen study gave a 15g serving one hour before bedtime, the same weight as one scoop of Simply Halal Collagen Peptides.

Will collagen before bed keep me awake?

No. Simply Halal Collagen Peptides is a single ingredient with no caffeine, no sugar, and 50 calories per scoop, so it fits right into a wind-down routine.

Can I take collagen every night?

Yes. Simply Halal Collagen Peptides is made for daily use, and the 2024 collagen sleep study used it seven nights in a row. If you take prescription sleep medication or have a medical condition, check with your doctor before adding any supplement.

Can I mix collagen into warm milk or tea?

Yes. Simply Halal Collagen Peptides is unflavored and dissolves in hot or cold drinks, so it disappears into warm milk, chamomile tea, or a mug of warm water without changing the taste.

I’m not Muslim. Why choose a halal-certified collagen for bedtime?

Some shoppers choose halal-certified products because they value clear halal standards, traceability, and third-party certification. It is an optional trust signal, not a religious requirement for the customer, and anyone can use Simply Halal Collagen Peptides.

Last updated October 23, 2026, by Chef Maher Fawaz. Product facts match the current Simply Halal Collagen Peptides label.