Does collagen help you sleep? Emerging research suggests it may. Collagen is naturally rich in glycine, an amino acid that has been shown to support sleep quality and help reduce night-time awakenings. A recent study published in the European Journal of Nutrition found that taking collagen peptides before bed improved sleep continuity and reduced overnight waking, making collagen an increasingly popular addition to bedtime routines.
For many years, collagen has been associated with healthy skin, joints and healthy ageing. But emerging research suggests collagen may offer another surprising benefit: supporting better sleep.
- This has led many people to ask:
- Does collagen help you sleep?
- Can collagen improve sleep quality?
- Is it better to take collagen before bed?
- What role does glycine play in sleep?
The answer lies in one of collagen’s most abundant amino acids: glycine.
In this guide, we’ll explore the latest research on collagen and sleep quality, explain the science behind glycine and discuss the best time to take collagen for sleep and healthy ageing.
Does collagen help you sleep?
The relationship between collagen and sleep has attracted growing attention in recent years.
While collagen itself is not a sleep aid, it contains naturally occurring amino acids that may support the body’s sleep processes.
One amino acid in particular stands out: glycine.
Glycine accounts for approximately one-third of the amino acids found in collagen and plays several important roles within the body. Research suggests glycine may help support:
- Sleep quality
- Sleep onset
- Overnight recovery
- Daytime alertness
- Healthy ageing
This is one reason collagen has become an increasingly popular addition to evening wellbeing routines.
Collagen and sleep quality what does the research show
The new science makes this one of the most exciting developments in this area comes from a recent randomised controlled trial published in the European Journal of Nutrition.
The study investigated the effects of collagen peptide supplementation before bed and found improvements in sleep quality compared with placebo.
Most notably, participants experienced fewer night-time awakenings and improvements in measures of sleep continuity.
This is significant because many adults do not struggle to fall asleep but instead struggle to stay asleep throughout the night.
Sleep fragmentation and frequent awakenings are increasingly recognised as important factors affecting overall sleep quality, energy levels and recovery. The findings suggest that collagen peptides may support more restorative sleep by helping to reduce disruptions during the night.
While more research is still needed, these results have generated considerable interest among researchers studying nutrition, recovery and healthy ageing.
Why sleep matters for healthy ageing
Sleep is one of the most important pillars of healthy ageing. During sleep, the body carries out numerous repair and recovery processes, including:
- Cellular repair
- Hormonal regulation
- Memory consolidation
- Immune function
- Tissue recovery
Poor sleep has been associated with:
- Increased fatigue
- Reduced cognitive performance
- Accelerated skin ageing
- Poorer metabolic health
- Reduced resilience to stress
For this reason, supporting sleep quality has become a major focus within longevity and healthspan research.
Discover how to create a sleep plan to improve sleep
Glycine sleep benefits: why glycine matters
To understand why collagen may influence sleep, we first need to understand glycine. Glycine is a naturally occurring amino acid found in particularly high concentrations within collagen.
Although often associated with protein synthesis and connective tissue health, glycine also acts as a neurotransmitter within the nervous system. Researchers believe glycine may support sleep through several mechanisms.
Glycine helps lower core body temperature
One of the most important triggers for sleep onset is a natural reduction in core body temperature. As part of the body’s circadian rhythm, temperature gradually falls in the evening, helping prepare the body for sleep.
Research suggests glycine may enhance this natural cooling process. By helping the body reduce core temperature more efficiently, glycine may support the transition into sleep and encourage more restful sleep throughout the night.
This is one reason glycine has attracted increasing attention from sleep researchers.
Glycine may support sleep quality
Studies investigating glycine supplementation have reported benefits including:
- Improved subjective sleep quality
- Reduced daytime fatigue
- Improved cognitive performance following poor sleep
- Better feelings of refreshment upon waking
Because collagen is naturally rich in glycine, researchers are increasingly exploring whether collagen supplementation may offer similar benefits.
Collagen before bed benefits
Many people now choose to take collagen as part of their evening routine. Potential collagen before bed benefits may include:
- Increased glycine intake
- Support for overnight recovery
- Support for connective tissue repair
- Potential improvements in sleep quality
- Convenient integration into a bedtime routine
Collagen is also a protein source, meaning it provides amino acids that contribute to the body’s overnight repair processes. While collagen is not a replacement for good sleep habits, it may complement a healthy bedtime routine.
Does collagen help you stay asleep?
This is where the recent research becomes particularly interesting.
Many sleep supplements focus on helping people fall asleep. However, the European Journal of Nutrition study suggests collagen peptides may influence sleep maintenance by reducing night-time awakenings. For people who wake repeatedly during the night, this may represent a particularly promising area of research.
Maintaining continuous sleep is important because deeper stages of sleep support:
- Recovery
- Memory processing
- Hormonal balance
- Physical restoration
The fewer interruptions experienced during the night, the more opportunity the body has to benefit from these restorative processes.
Collagen, recovery and overnight repair
Collagen’s potential role in sleep extends beyond glycine alone. The body performs much of its repair and regeneration during sleep. This includes the renewal of tissues containing collagen, including:
- Skin
- Bones
- Cartilage
- Tendons
- Connective tissues
Supporting both sleep quality and collagen intake may therefore provide complementary benefits for healthy ageing and recovery.
How much collagen should you take before bed
Most sleep-related collagen studies use between 10g and 15g of collagen peptides daily. Rejuvenated Collagen Shots provide10g of hydrolysed marine collagen per serving, placing them in the range used for clinical research. Experiment to find what level is right for you and potentially add an extra half scoop.
When should you take collagen: morning or night?
One of the most common questions people ask is:
Is it better to take collagen in the morning or at night?
The answer depends on your goals. Taking collagen in the morning Morning collagen may suit people who:
Enjoy adding collagen to their breakfast routine
Want to build a consistent daily habit
Use collagen as part of their overall nutrition plan
Taking collagen at night
Evening collagen may appeal to people who:
- Want to increase glycine intake before bed
- Are interested in supporting sleep quality
- Enjoy creating a relaxing bedtime routine
- Want to support overnight recovery
Which is best?
The most important factor is consistency.
If taking collagen in the morning helps you remember it every day, that may be the best option.
However, if your focus is sleep quality and overnight recovery, taking collagen in the evening may offer additional benefits.
Supporting sleep and recovery holistically
Collagen can be a useful addition to a healthy sleep routine, but it works best as part of a broader approach.
Consider supporting sleep through:
- Regular sleep schedules
- Morning daylight exposure
- Limiting late-night screen use
- Managing stress
- Staying hydrated
- Creating a cool sleep environment
These habits help support the body’s natural circadian rhythm and recovery processes.
Why sleep becomes more important as we age
As we age collagen levels decline and sleep quality becomes more difficult to achieve. This is particularly evident during the perimenopause and menopause. Adding collagen to your daily routine can help with recovery and healthy ageing.
For more guidance, read: Sleep and Recovery:
Supporting overnight wellbeing
At Rejuvenated, we believe that healthy ageing begins with supporting the body’s natural repair and recovery processes.
Collagen Shots
Collagen Shots provide 10,000mg of hydrolysed marine collagen peptides, naturally rich in glycine and other amino acids that support connective tissue health and overall wellbeing.
H3O Night Repair
H3O Night Repair has been specifically formulated to support overnight hydration, recovery and healthy ageing. Combining hydration support with a consistent bedtime routine can help create the ideal environment for restorative sleep.
Frequently asked questions
Does collagen help you sleep?
Emerging research suggests collagen peptides may support sleep quality, particularly by helping reduce night-time awakenings.
What are the glycine sleep benefits?
Glycine may support sleep quality by helping lower core body temperature and supporting the body’s natural sleep processes.
Is collagen before bed beneficial?
Many people choose to take collagen before bed because it provides glycine and amino acids that support overnight recovery.
Should I take collagen in the morning or at night?
Both options can be effective. Evening supplementation may be particularly appealing for those interested in sleep quality and recovery.
Does collagen help you stay asleep?
Recent research suggests collagen peptides may help reduce night-time awakenings and support sleep continuity.
The Bottom Line
Emerging research suggests collagen may offer benefits that extend beyond skin, joints and healthy ageing.
Thanks to its naturally high glycine content, collagen may help support sleep quality and overnight recovery. Recent clinical research has shown promising improvements in sleep continuity and reductions in night-time awakenings, making this an exciting area of nutrition science.
Whether you choose to take collagen in the morning or before bed, consistency remains key. Combined with healthy sleep habits, collagen can form part of a broader strategy to support recovery, wellbeing and healthy ageing from within.
