What is RETAIN?

A daily, unflavored powder built to support muscle and strength while you're losing weight. One serving brings together creatine, electrolytes, hydrolyzed collagen, vitamin C, and glycine — the inputs muscle and connective tissue draw on most when intake drops. It's made for the window while the weight is coming off, and for staying consistent well beyond it.

Who is it for?

People who are losing weight, often with the help of a GLP-1 medication, and want to hold onto the strength and muscle they've built while they do it. If your weight loss is working but your strength feels less consistent than it used to, RETAIN was built for exactly that.

Do I have to be on a GLP-1 medication to use it?

No. RETAIN supports muscle preservation during any kind of intentional weight loss. The underlying need, supporting muscle while you're eating less, applies whether or not medication is part of your routine.

I've reached my goal weight. Is RETAIN still for me?

Yes. The strength you preserve while losing weight is the strength you keep afterward. Creatine, collagen, and the rest of the formula continue to support training, recovery, and connective tissue long after the scale settles. RETAIN is built for the window and for the consistency that follows it.

What's actually in it?

A five-part formula, fully disclosed, no proprietary blend: Creatine Monohydrate (5g), Electrolytes (Sodium 400mg, Potassium 220mg, Magnesium 60mg), Hydrolyzed Collagen Peptides (5g), Vitamin C (250mg), and Glycine (500mg). Every ingredient is there for a reason tied to what the body needs during weight loss.

Is RETAIN third-party tested?

Yes. Every lot is tested by Light Labs, an independent ISO/IEC 17025-accredited laboratory (PJLA #128155), for creatine content and heavy metals. Light Labs also sends a microbiological panel to an outside laboratory. The independent results for the founding lot are on our testing page.

Is RETAIN gluten free and soy free?

Yes. RETAIN contains no gluten or soy ingredients, and the finished product was screened by ELISA to confirm it. Gluten was not detected at a detection limit of 1.0 ppm — the FDA threshold for a gluten-free food is 20 ppm. Soy was not detected at a detection limit of 0.32 ppm. Both results are published on our testing page. If you have celiac disease or a severe soy allergy, note that the product is made on shared equipment and worth discussing with your provider.

Why creatine?

Creatine supports strength and muscle. It's the anchor of how RETAIN works.

Can't I just take creatine on its own?

Creatine alone is a strong foundation. During weight loss, though, hydration shifts and connective tissue is under more demand at the same time. RETAIN keeps the creatine and adds the electrolytes, collagen, vitamin C, and glycine that support those other changes, so it can take the place of a standalone creatine in your routine.

Will the scale go up?

It might, a little. Creatine pulls water into your muscles as their creatine stores fill. That's water in muscle, not fat, and it isn't stomach bloating. The International Society of Sports Nutrition's review names a small weight gain, mostly that water, as the only unwanted effect that shows up consistently in creatine research. RETAIN is a 5g daily dose, so its creatine builds up over several weeks rather than one, and it ends up in the same place a high-dose loading week does (Kreider et al., 2017). Creatine itself adds no meaningful calories.

Will it make me bloated?

In a 2025 review of 685 creatine studies, about 5.5% of people taking creatine reported stomach issues, compared with about 4% of people taking a placebo (Kreider et al., 2025). Creatine also pulls water into muscle, which is part of how it works and isn't the same as stomach bloating. If you've had a reaction to creatine before, check with your provider before adding anything new.

Why collagen?

Hydrolyzed collagen supports connective tissue, skin, and joints — the parts of you that change alongside the weight. Skin and connective tissue shift while the weight is coming off, around the arms, the jaw, the inner thighs, and most women don't hear about this until they're in the middle of it. Collagen is here to support that, paired with the vitamin C its synthesis requires.

Does it taste like anything?

It's unflavored by design — no sweeteners, no flavor masking, no sensory load. It's meant to disappear into whatever you're already drinking: coffee, water, a shake. It stirs in without clumping and doesn't change the taste of what it's in.

Does RETAIN contain any allergens?

RETAIN contains no major allergens as ingredients. It's produced on shared equipment in a facility that also processes milk, eggs, fish, shellfish, tree nuts, peanuts, wheat, soybeans, and sesame. Before each production run, the equipment goes through a full cleaning and changeover procedure that's verified by swab testing — not just visual inspection. The finished product is then screened for gluten and soy, and neither was detected. If you have a severe food allergy, check with your provider before use.

How do I take it?

One scoop a day, stirred into whatever you already drink. No loading, no timing window to manage, no cycling. Consistency is what makes it work, so the easiest approach is to attach it to something you already do every day.

Can I take it with my GLP-1 medication?

RETAIN is a daily supplement, not a medication. It contains no stimulants and no appetite-affecting ingredients. If you take a GLP-1 or any other medication, check with your prescribing provider before adding anything new.

How long until I notice something?

Not overnight, and that's by design. Creatine builds up with consistent daily use, so RETAIN works in the background. The point isn't a feeling. It's helping you hold on to your strength while the weight comes off.*

Do I take it on rest days too?

Yes. Creatine and the rest of the formula work through daily saturation, not around individual workouts, so the benefit comes from taking it every day — training or not.

What is founding pricing?

The founding release is RETAIN's launch. The founding price is $69.99 for a one-time order and $62 a month on subscription. It runs through November 30, 2026 at 11:59 p.m. CT. After that, a one-time order is $80 and a subscription is $72 a month. Subscriptions ship free, including every renewal. Founding customers will hear about future GLYM products first.

What does it cost?

The founding price is $69.99 for a one-time order and $62 a month on subscription. It runs through November 30, 2026 at 11:59 p.m. CT. After that, a one-time order is $80 and a subscription is $72 a month. Subscribe at the founding price and $62 a month stays your price as long as you're subscribed. If you cancel and subscribe again later, the price in effect then applies.

Why subscribe?

Preservation works over time, so consistent use is the point. Subscribe at the founding price and $62 a month stays your price as long as you're subscribed. If you cancel and subscribe again later, the price in effect then applies. Subscriptions ship automatically so you don't run out.

When will it ship?

RETAIN is in stock. Ships within 1–2 business days. You'll receive tracking when yours ships.

What's the guarantee?

Your first RETAIN order is backed by a 30-day money-back guarantee from the day it arrives, opened or not, and you don't need to send it back. Skip or cancel anytime before your next order ships. See the policy. Later orders and renewals aren't covered.