Taking Collagen for Sleep FAQs

If you’ve ever struggled to fall asleep, stay asleep, or wake up feeling refreshed, you know how disruptive poor sleep can be. Most traditional sleep aids rely on melatonin or sedatives that may leave you groggy, disrupt hormones, disrupt metabolism, and fail to support true recovery.

Collagen sleep supplements are different: they support your body’s natural rhythms, improve recovery, and — thanks to their high glycine content — directly improve sleep quality.

Collagen sleep supplements combine collagen protein with calming nutrients like magnesium, GABA, and L-theanine. Unlike sedatives, they don’t “knock you out” — they work with your biology to calm the nervous system and provide the raw materials your body needs for overnight repair.

Importantly, collagen is about one-third glycine by weight. Glycine has been shown in clinical studies to lower core body temperature and improve sleep quality, helping you enter deeper, more restorative stages of sleep. [1, 2, 3, 4]

Traditional supplements just help you fall asleep. Collagen sleep supplements help you stay asleep, sleep more deeply, and recover better. By combining glycine-driven sleep benefits with protein for muscle and joint repair, they set the stage for mornings where you wake up physically restored and never groggy.

Collagen provides amino acids that rebuild muscles, joints, and connective tissues while you rest. At the same time, its high glycine content promotes deeper, more restorative sleep. This dual effect reduces soreness and helps you wake up feeling physically recovered and mentally sharper.

Yes, it’s safe to use a collagen sleep supplement nightly if it doesn’t rely on melatonin or other hormone altering ingredients. Thirdzy’s Rest & Recover formula works by supporting your body’s natural processes instead of overriding them, safely combining GABA and magnesium in addition to collagen. This makes it a long-term solution for better sleep without the need for cycling on and off.

Most people tolerate collagen well since it’s a naturally occurring compound. However, as with any supplement, those with medical conditions or prescriptions should consult their healthcare provider first. Look for a formula that’s clean and free from sugar, gluten, and unnecessary additives, which reduces the likelihood of side effects.

No, Rest & Recover Collagen is designed to help you wake up refreshed and non groggy after sleep. Unlike melatonin- or sedative-based products, it doesn’t cause drowsiness. Instead, it supports your body in entering restorative sleep naturally, so mornings feel sharper and more energized.

Some people notice a difference in just a few nights, especially in how quickly they fall asleep. For others, more consistent improvements — like deeper sleep or reduced soreness — show up within a couple of weeks. Early signs often include waking up less during the night and feeling more energized in the morning. If you track your sleep, you may notice improvements right away by studying your sleep data.

Unlike melatonin, which can cause grogginess or disrupt hormone balance, this is a melatonin free sleep supplement. It relies on nutrients that support your body’s own sleep chemistry instead of overriding it. This means you can use it nightly without dependency, side effects, or hormone-related concerns.

While athletes may experience enhanced performance, deeper sleep and better muscle recovery, the benefits extend far beyond sports. Anyone who struggles with poor sleep, daily stress, or nighttime restlessness can see improvements. Non-athletes often report better energy levels, less soreness, and improved overall wellness from nightly use. If you’re over 30, check out our recovery tips for Masters athletes. 

The collagen in Thirdzy’s Rest & Recover formulation comes from Argentinian grass-fed beef, which is known for its purity and high standards. This sourcing ensures both quality and sustainability, giving you peace of mind about what you’re consuming. By choosing responsibly produced collagen, the product supports your health without compromising on integrity.

Yes, many users notice less soreness and stiffness after workouts or long days when regularly using Thirdzy’s collagen sleep supplement. The Magnesium it contains improves sleep by helping your muscles to relax and recover, while collagen supports the repair of your joints and connective tissues. Together, these effects contribute to greater comfort, better mobility, and deeper, less disrupted sleep.

Mix one scoop into 2–4 ounces of water about 30–60 minutes before bed. It fits easily into a nightly wind-down routine.

It has a light, “relaxed” strawberry lemonade flavor that blends smoothly with water. Many users look forward to it as an enjoyable part of their nighttime ritual.

Most collagen supplements (including Thirdzy’s) contain Type I and Type III collagen, which support muscle, joint, and connective tissue repair, making it ideal for sleep recovery for athletes. By reducing soreness and stiffness, they can make it easier to rest comfortably. But when it comes to sleep quality itself, the key is collagen’s high glycine content — shown in clinical studies to lower body temperature and promote deeper, more restorative sleep.

Rest & Recover Collagen is a comprehensive recovery stack that supports your body’s natural sleep cycles by calming the nervous system and replenishing key nutrients. It lowers stress hormones that often interfere with restful sleep, making it easier to reach the deep and REM stages. Users report waking up feeling more restored, energized, and ready to perform.

Thirdzy’s Rest & Recover Collagen formula includes magnesium, GABA, and L-theanine, which are known for their calming effects on the body and mind. Magnesium relaxes muscles and helps regulate sleep rhythms, while GABA for sleep reduces stress signals in the brain. L-theanine enhances focus and promotes relaxation, making it easier to transition smoothly into sleep.

1. Bannai, Makoto, and Nobuhiro Kawai. "New therapeutic strategy for amino acid medicine: glycine improves the quality of sleep." Journal of pharmacological sciences 118.2 (2012): 145-148.

2. Bannai, Makoto, et al. "The effects of glycine on subjective daytime performance in partially sleep-restricted healthy volunteers." Frontiers in neurology 3 (2012): 61.

3. Kawai, Nobuhiro et al. “The sleep-promoting and hypothermic effects of glycine are mediated by NMDA receptors in the suprachiasmatic nucleus.” Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology vol. 40,6 (2015): 1405-16. doi:10.1038/npp.2014.326 

4. Yamadera W, Inagawa K, Chiba S, Bannai M, Takahashi M, Nakayama K. Glycine ingestion improves subjective sleep quality in human volunteers, correlating with polysomnographic changes. Sleep and Biological Rhythms. 2007;5(2):126-131. doi:10.1111/j.1479-8425.2007.00262.x.