Support the strength you're building.
Supports strength and muscle.*

5 g creatine. 5 g collagen peptides. Plus vitamin C, glycine, and electrolytes. One unflavored daily scoop.
A daily routine built around strength, connective tissue, and hydration. Discover what each ingredient brings to your scoop.


During my own weight-loss and strength-training journey, I started thinking about how to care for my muscles, connective tissue, and skin.
Creatine, collagen peptides, vitamin C, glycine, and electrolytes were all part of the routine I chose for myself. Each ingredient had a reason to be there—but I wanted a simpler way to bring them together.
That’s why I created RETAIN: one daily formula, inspired by my own routine.
Every ingredient has a purpose. Together, they make your daily routine simpler.
Supports strength and muscle.*
Hydrolyzed, grass-fed bovine collagen peptides (Types I & III), alongside vitamin C to support normal collagen synthesis.*
Supports tissue recovery.*
Electrolytes for hydration support.*
If all you want is creatine, plain creatine monohydrate may be a great fit.
Muscles don’t work alone. Tendons connect muscle to bone, helping translate muscle contractions into movement. Collagen is a key structural protein in these connective tissues, and vitamin C is required for normal collagen formation.*
RETAIN brings creatine and electrolytes together with collagen peptides, vitamin C, and added glycine in one unflavored daily scoop. That combination reflects our approach to muscle care: considering the muscle alongside the connective tissues that help it do its work.
Just want creatine?
Plain creatine can be enough for that goal.
Already take creatine + electrolytes?
Compare the complete formula and the role of collagen peptides, vitamin C, and glycine.
Want GLYM's broader approach?
RETAIN brings these purposefully chosen ingredients together in one daily scoop.
Your confidence starts with knowing what’s inside. RETAIN is independently tested, with results you can see for yourself.
For RETAIN lot 2604090, Light Labs measured 5.38 g creatine monohydrate per serving versus the labeled 5 g. Creatinine and dicyandiamide were reported below the laboratory's respective reporting limits. These data do not establish that the raw creatine is purer than a competitor's.

Just one daily scoop of an unflavored, unsweetened formula that fits into the routine you already have.
Mix with at least 8 oz of water or a beverage of your choice.
RETAIN complements adequate protein, resistance training and consistent nutrition. It doesn't replace them.
The ingredients were selected for distinct reasons: creatine to support strength and muscle; collagen peptides for connective tissue and skin support, with vitamin C for normal collagen formation; added glycine to support tissue recovery; and electrolytes for hydration support. This is the founder’s rationale for the combination, not evidence that RETAIN has been clinically shown to outperform creatine alone.*
RETAIN includes 5 g creatine and electrolytes, plus 5 g hydrolyzed collagen peptides, 250 mg vitamin C, and 500 mg added glycine. Other brands may offer different combinations; compare the full ingredient panel and the purpose behind each formula.
No. RETAIN complements, rather than replaces, adequate dietary protein and resistance training.
No added flavors or sweeteners. It can be mixed into water or another beverage; the ingredients may still contribute a natural taste.
RETAIN™ · 30 servings · Unflavored · Unsweetened
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