Peptides for muscle growth are one of the hottest topics making their way across our industry. Everyone seems to want to know and learn more about how they can enhance their ability to build muscle.
Sure, training hard and eating right are still something everyone should be focused on, but what exactly makes natural peptides so enticing? Can these short chains of amino acids magically add lean muscle mass and speed up recovery without the side effects of something like anabolic steroids?
The answer could be a shocking “yes.”
I’ve been recommending peptides to my training clients for some time now, and they’ve achieved some impressive results in a remarkably short period. And as a strength coach and sports nutritionist who clients and athletes are paying good money for, results absolutely matter.
In this article, we are going to dive deeper into two specific peptides for muscle growth that you shouldn’t sleep on: patented PeptiStrong® and DL-185®.
We’ll unpack how these clinically studied ingredients can easily fit into your supplement routine to provide you with steady strength gains, improved muscle growth, and enhanced recovery, cutting down muscle soreness and protecting lean muscle mass (no needles required).
Disclaimer: This article is for informational purposes only and should not be used to treat or diagnose any condition. It is recommended that you speak with your doctor before starting any exercise program, making changes to your nutrition plan, or adding any new supplements into your current regimen.
How Natural Peptides Support Muscle Growth
To better understand how peptides for muscle growth work, we need to first understand natural peptides themselves.
Peptides are simply chains of amino acids. While you may be thinking, “Matt, that sounds pretty simplistic. I thought peptides were more complicated than that?” The answer is yes and no.
You can think of natural peptides like text messages being sent inside your body. They trigger muscle protein synthesis, support tissue repair, and influence your body’s natural growth hormone signals that help rebuild muscle tissue after workouts.
After training, your pituitary gland (a small control center in your brain) helps regulate human growth hormone levels, also commonly referred to as HGH.
HGH nudges your liver into making insulin-like growth factor-1 (IGF-1). IGF-1 tells your muscle cells to grow and helps you break down stubborn body fat to be used for energy.
Unfortunately, most peptides on the market today are synthetic. The good news is that NutraBio offers a natural alternative that helps remove potential side effects and the need for needles and peptide injections.
What this allows you to do is to experience rapid muscle growth without straying away from your natural supplement regimen.
Many of the athletes I work with mention they experience less muscle soreness and improved endurance during training sessions and practices after using peptides like PeptiStrong and DL-185.
That should sound like music to the ears of those who lift heavy and have long training blocks.
The Science Behind PeptiStrong and DL-185
PeptiStrong and DL-185 are patented peptide ingredients that help target key signals in muscle cells that control muscle growth (muscle hypertrophy) and tissue repair. They support protein synthesis (the process that builds new muscle fibers) and can help you return to training faster due to improved recovery times.
Most important is that both PeptiStrong and DL-185 are clinically studied ingredients that have been shown to be safe, providing users with peace of mind and natural results.
PeptiStrong
PeptiStrong has been found to help boost protein synthesis up to four times faster than whey, according to research published. It acts on mTOR and Phospho-S6, two switches your cells use to turn on muscle growth and development. mTOR (short for mammalian target of rapamycin) is a central regulator of growth pathways.
This plant-based ingredient comes from fava beans, so you can avoid extra calories and artificial additives. A 2.4 gram dose delivered five clinical benefits in studies, including a 54% increase in recovery and a reduction in lean muscle loss during calorie deficits, and up to 144% better strength recovery and 47% reduction in muscle fatigue versus placebo.
I’ve noticed considerably less fatigue and soreness after brutal training sessions when compared to before I started using PeptiStrong. Even more impressive is that my muscles look and feel fuller, even while I’m shedding body fat.
DL-185
DL-185 has been said to help increase muscle protein synthesis by 159% from baseline in testing and outperforms leucine by 60%. It helps provide a more potent anabolic response thanks to the boost in muscle protein synthesis rates.
Faster protein building means faster progress during resistance training.
DL-185 moves quickly into muscle cells using special transporters. Take 2 grams about 30 to 45 minutes before your workout.
Like with PeptiStrong, DL-185 hits the mTOR switch, setting you up for muscle growth following brutal training sessions. Even when used as one of the standalone peptides for muscle growth, users often feel less soreness and fatigue, allowing their training frequency to stay high.
DL-185 is ideal for both men and women who want natural support without the need for anabolics. Staying natural is important for many people, and natural peptides for muscle growth (like what is offered by NutraBio) are the way to go.
Benefits of NutraBio’s Growth Peptides
NutraBio Growth Peptides is the solution you’ve been looking for to help ignite new muscle growth and better recovery.
The natural peptides for muscle growth used in Growth Peptides support growth hormone signals to help you reach your goals and achieve the results you desire.
Below is why that matters when you are looking to build lean muscle without shortcuts.
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Rapid muscle growth
Growth Peptides provides you with a dual approach, combining PeptiStrong and DL-185. This precise combo helps boost muscle protein synthesis and supports lean muscle building.
Another patented ingredient (AstraGin®) is also added to the potent formula to help improve absorption in the gut so that your body has the ability to use more of every serving.
This approach supports normal GHRH pathways, similar in concept to sermorelin, and engages IGF-1 and mTOR signaling. What this provides you with is the ability to keep progressing with your muscle growth efforts while avoiding banned growth hormones and related risks tied to hGH abuse.
Even more impressive is the ability of Growth Peptides to inhibit myostatin, further advancing your full muscle growth potential and allowing your body to eliminate body fat.
What you can expect:
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Faster strength gains and visible muscle fullness.
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Help with fat loss while preserving lean muscle mass.
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Clean labels that align with sports supplement standards.
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Improved recovery and reduced muscle soreness
As someone who is no stranger to training hard and with intensity, you know what follows these types of workouts. We’re talking about muscle soreness that can linger for days and ultimately affect your next training sessions.
Natural peptides for muscle growth (like what is found in NutraBio Growth Peptides) support faster recovery and muscle tissue repair, so those annoying and lingering aches fade sooner, and you can get back to training with the same grit and intensity you’re used to.
RELATED: What Causes Delayed Onset Muscle Soreness (DOMS)?
The very specific blend of patented ingredients in Growth Peptides promotes protein synthesis and limits muscle breakdown. It also improves nutrient uptake to feed your working muscles.
It’s quite amazing that these peptides for muscle growth support healthy growth hormone patterns without the use of drugs like ipamorelin or CJC-1295 (both of which are synthetic peptides).
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Safe for athletes and active individuals
You, like many others, come to NutraBio because you know the quality and the fact that we refuse to compromise on our values. For years, we’ve been the gold standard when it comes to transparency in the industry, and Growth Peptides is no exception.
The Growth Peptides formula aligns with natural supplement standards and avoids the use of banned growth hormones. Each ingredient is supported by human data or strong clinical support that backs up each claim.
PeptiStrong stimulates protein synthesis without pushing testosterone or human growth hormone beyond normal ranges.
DL-185 activates mTOR to support strength and recovery after intense training.
Everything aligns with your goals to support natural supplements that are of the highest quality and that help deliver results.
You get performance support without risky compounds like ibutamoren or other synthetic growth factors that are often flagged in testing.
AstraGin enhances nutrient absorption in the gut, allowing lower doses to be effective. This approach supports healthy immune function, promotes weight management goals, and aids in the repair of muscle tissue.
While Growth Peptides contains natural ingredients, if you compete in any organization, it is always recommended that you review your rulebook and talk with your coach or medical team. With rules and compliance within organizations constantly changing, asking questions helps keep you clean and your status protected.
How to Incorporate Growth Peptides into Your Routine
Implementing NutraBio Growth Peptides into your routine couldn’t be easier. With the ease of use and a steady routine, you’ll be on your way to experiencing improved muscle growth and tissue repair.
So, what’s the best way to use natural peptides for muscle growth?
Many users mention that they incorporate Growth Peptides around their training as they feel it provides them with enhanced muscle repair and recovery. It is recommended that you take a serving (7 capsules) of the product immediately after training to achieve the best results possible.
On days when you aren’t training, you may take the product at any time of day you prefer. Personally, I recommend you keep it consistent to avoid missing your daily dose. For instance, on non-training days, take Growth Peptides with other supplements to create a routine.
An example would be taking a serving of Growth Peptides with your morning supplements.
With steady use, many athletes and bodybuilders report seeing and feeling the effects within the first week of use.
It is also essential that you stay hydrated and consume enough protein in your diet (like whey or lean meats) to supply your muscles with a steady amount of amino acids to boost muscle growth.
To take things to the next level with peptides for muscle growth, you can easily stack Growth Peptides with other NutraBio products.
Some of the best products to stack alongside this product would be:
Something to think about is the importance of taking Growth Peptides with your post-workout shake, as the AstraGin in this peptide supplement helps you get more from each dosage and scoop (including protein, EAAs, and other supplements).
The key is to adjust your stack according to your goals. For example, use peptides with a thermogenic to help preserve lean muscle tissue during a cut. Or, leverage the power of peptides for muscle growth and combine it with NutraBio Test to maximize testosterone support while bulking.
The stacking potential with Growth Peptides is endless, and the only limit is your imagination.
Conclusion
PeptiStrong and DL-185 help you build lean muscle mass the smart way and allow you to do it without the need for drugs and needles.
The ingredients in NutraBio Growth Peptides support muscle protein synthesis, improve recovery, and keep you ready to push yourself every time you step in the gym. Each session allows you to move closer to the muscle growth goals you’ve set out to achieve while maximizing your recovery efforts and performance.
Your training is already intense. Match it with precise support that gets you closer to your goals, without compromise. With the right plan and peptides for muscle growth, you can build extreme muscle mass, reduce body fat, and maintain training intensity week after week.
References
- https://www.nuritas.com/products/peptistrong/
- https://www.nuritas.com/deep-dive-into-peptistrong-an-ai-discovered-ingredient-for-muscle-health/
- https://www.stack3d.com/2025/09/nutrabio-growth-peptides.html
- https://www.sciencedirect.com/science/article/pii/S0022316623025166
- https://pmc.ncbi.nlm.nih.gov/articles/PMC9967853/
- https://journals.physiology.org/doi/full/10.1152/japplphysiol.00295.2021
