“Creatine helps you retain muscle and reduce breakdown while building strength during a deficit.”
Rated 4.6 Excellent | 11,332 Reviews
Keep the muscle Lose the rest
One daily scoop of clinically dosed protein, creatine, HMB, and vitamin K2 to protect muscle and energy while you lose weight on GLP-1 medications.
0%
Said they felt noticeably strongerafter taking HOLDFAST consistently through their GLP-1 routine0%
Would recommend HOLDFAST to a friend on Ozempic or Wegovyfor muscle, bone, and energy support0%
Noticed more steady energy day to dayeven while still in a calorie deficit0%
Said HOLDFAST fit easily into their daily shot routinewith no extra effort or hassle30 Day Money-Back Guarantee
Clinically Dosed.Protected Muscle. Stronger Bones.
When GLP-1 physiology meets a formula built specifically for it, the results speak for themselves.
12 Clinically Dosed Actives For Protecting What GLP-1 Medications Quietly Take Away
Every scoop is built to replace what your body is losing on your GLP-1 medication, not to be a generic protein shake.
Creatine Monohydrate
The strength anchor of the stack. A full clinical dose to defend power output and lean mass as the calorie deficit deepens.
Whey Protein Isolate
The building blocks your muscle needs to stay put. A leucine-forward complete protein that gives your body the raw material to preserve, not just lose, tissue.
Vitamin K2 (as Menaquinone-7)
Closes the bone gap generic tubs ignore. Directs calcium into bone to help protect density while rapid weight loss puts your skeleton at risk.
HMB (Beta-Hydroxy-Beta-Methylbutyrate)
Anti-catabolic backup for your hardest-working muscle. A leucine metabolite that helps blunt muscle breakdown so your losses come from fat, not strength.
L-Leucine
The trigger that tells your body to hold onto muscle. Added leucine pushes each serving past the threshold that switches on muscle preservation during a deficit.
Betaine Anhydrous (Trimethylglycine)
Quiet support for power and strength retention. Works alongside creatine to help maintain output as your body adapts to eating less.
Vitamin D3 (Cholecalciferol)
The other half of your bone-protection pair. Supports calcium absorption so K2 has what it needs to keep your bones strong through the loss.
Magnesium (as Magnesium Bisglycinate)
The mineral behind steady energy and solid bones. A fully reacted form that supports muscle function and vitamin D activation without the digestive downside.
Taurine
Helps keep fatigue from creeping in. Supports cellular energy and neuromuscular function when your intake is lower than it used to be.
Potassium (as Potassium Citrate)
Electrolyte support built for reduced intake. Helps maintain hydration and steady energy when you're simply eating and drinking less.
Vitamin B12 (as Methylcobalamin)
Bioavailable energy support, not a placebo dose. A methylated form that supports steady energy and cellular function as your calorie intake drops.
Zinc (as Zinc Bisglycinate)
A commonly overlooked mineral men need most right now. Supports protein metabolism and recovery so your body can actually use the muscle-building nutrients you're giving it.
Creatine Monohydrate
The strength anchor of the stack. A full clinical dose to defend power output and lean mass as the calorie deficit deepens.
Whey Protein Isolate
The building blocks your muscle needs to stay put. A leucine-forward complete protein that gives your body the raw material to preserve, not just lose, tissue.
Vitamin K2 (as Menaquinone-7)
Closes the bone gap generic tubs ignore. Directs calcium into bone to help protect density while rapid weight loss puts your skeleton at risk.
HMB (Beta-Hydroxy-Beta-Methylbutyrate)
Anti-catabolic backup for your hardest-working muscle. A leucine metabolite that helps blunt muscle breakdown so your losses come from fat, not strength.
L-Leucine
The trigger that tells your body to hold onto muscle. Added leucine pushes each serving past the threshold that switches on muscle preservation during a deficit.
Betaine Anhydrous (Trimethylglycine)
Quiet support for power and strength retention. Works alongside creatine to help maintain output as your body adapts to eating less.
Vitamin D3 (Cholecalciferol)
The other half of your bone-protection pair. Supports calcium absorption so K2 has what it needs to keep your bones strong through the loss.
Magnesium (as Magnesium Bisglycinate)
The mineral behind steady energy and solid bones. A fully reacted form that supports muscle function and vitamin D activation without the digestive downside.
Taurine
Helps keep fatigue from creeping in. Supports cellular energy and neuromuscular function when your intake is lower than it used to be.
Potassium (as Potassium Citrate)
Electrolyte support built for reduced intake. Helps maintain hydration and steady energy when you're simply eating and drinking less.
Vitamin B12 (as Methylcobalamin)
Bioavailable energy support, not a placebo dose. A methylated form that supports steady energy and cellular function as your calorie intake drops.
Zinc (as Zinc Bisglycinate)
A commonly overlooked mineral men need most right now. Supports protein metabolism and recovery so your body can actually use the muscle-building nutrients you're giving it.
What Men On GLP-1s Are Saying
Rated 4.6 / 5 across 11,332 reviews.
5.0Verified Customer
“one scoop, dont have to think about it Doc checked my bone density last month and said it held steady, figured the K2 and D3 in this is doing something. Mix it in the morning shake, no measuring, hard to mess up.”
Gregory H.easy to takeactually works
5.0Verified Customer
“wife noticed I wasn't dragging anymore my wife kept saying I looked wiped out after Wegovy started and now she's the one who told me to keep buying this stuff and honestly I feel like I can actually lift and not just feel skinny and tired all the time!!”
Marcus T.actually works
5.0Verified Customer
“box showed up dented but tub was fine Ordered it after the bone density talk with my doctor; scoop dissolves fine in milk, mornings with the shot now include this too, feels like it fills in the gaps that ozempic was leaving.”
Dale R.fills the gaps
4.0Verified Customer
“helps with energy but doesnt mix great coaching my sons team and not gasping for air chasing foul balls anymore which is nice. only complaint is it never fully dissolves, always a little gritty at the bottom of the shaker no matter how long i shake it”
Anthony V.a little gritty
Proven Ingredients Featured In:
“Whey protein boosts muscle protein synthesis and helps grow and hold lean muscle mass.”
“Vitamin K2 supports both bone health and heart health as calcium is directed correctly.”
ScienceDirect
“HMB supplementation helped preserve muscle mass and guard against age-related muscle loss.”
“Older adults pairing creatine with resistance exercise can improve their strength.”
Abbott
“HMB has been shown to help preserve muscle mass in healthy older adults.”
Stay Strong. Every Scoop.
One daily habit that protects what the scale doesn't show.
Protects Lean Muscle
Defends Bone Density
Keeps Energy Steady
Preserves Real Strength
Real Preservation. Backed by What You're Actually Losing.
GLP-1 meds don't just melt fat, they quietly take muscle, bone density, and energy with it, so HOLDFAST is built to defend all three in one daily scoop.
Muscle
Hold onto real strength
Bone Density
Protect what's underneath
Energy
Feel capable, not just smaller
Daily Routine
One scoop, zero extra effort
Muscle Preservation
Bone Density Support
Clinical Creatine
Steady Energy
GLP-1 Nutrient Gaps
Everyday Habit
Muscle Preservation
Bone Density Support
Clinical Creatine
Steady Energy
GLP-1 Nutrient Gaps
Everyday Habit
Muscle Preservation
Bone Density Support
Clinical Creatine
Steady Energy
GLP-1 Nutrient Gaps
Everyday Habit
Your Preservation
Timeline
Here's how your body holds onto strength, bone, and energy while the weight keeps coming off:
Week 1: Early Shifts
- Less of that flat, drained feeling
- Strength starts holding steady, not slipping
- You feel supported through the deficit
Week 2: Energy Returns
- Steadier energy through the day
- Workouts and daily tasks feel less taxing
- Less of that soft, gaunt feeling
Week 3: Strength + Bone Sync
- Muscle feels more defended, not depleted
- Bones and joints feel protected, not fragile
- You feel capable, not just smaller
Week 4+: Long-Term Vitality
- Strength stays with you as the scale drops
- Energy and vitality feel like your new baseline
- You feel lean and powerful, not frail
5 Reasons Why
5 Reasons HOLDFAST Is Different From Any Whey Tub You've Tried
Built for what GLP-1 actually takes, not what a gym tub assumes you need.
5 Reasons Why 5 Reasons HOLDFAST Is Different From Any Whey Tub You've Tried
Built for what GLP-1 actually takes, not what a gym tub assumes you need.
Reason 1
Built For GLP-1, Not Relabeled For It
This isn't a diet whey tub with a new sticker. HOLDFAST is engineered around the specific muscle, bone, and energy losses GLP-1 medications create.
Reason 2
A Full Clinical Creatine Dose, Not Zero
Most GLP-1 protein powders skip creatine entirely. HOLDFAST includes a full 5 g dose plus HMB and added leucine for layered, three-way muscle defense.
Reason 3
Closes The Vitamin K2 Gap Others Ignore
Protein tubs lean on calcium and vitamin D and leave vitamin K2 out completely. HOLDFAST adds 180 mcg of MK-7 to help defend bone density as the weight drops.
Reason 4
One Scoop Instead Of A Shelf Of Tubs
Protein, creatine, K2, electrolytes, and B-vitamins in a single daily scoop, so you're not buying and stacking five separate products to cover what GLP-1 drains.
Reason 5
An Everyday Habit, Not A Clinical Protocol
No appointments, no gating, no med-spa feel. Just one lightly vanilla scoop in water, milk, or your shake, timed to your daily shot.
Reason 1
Built For GLP-1, Not Relabeled For It
This isn't a diet whey tub with a new sticker. HOLDFAST is engineered around the specific muscle, bone, and energy losses GLP-1 medications create.
Reason 2
A Full Clinical Creatine Dose, Not Zero
Most GLP-1 protein powders skip creatine entirely. HOLDFAST includes a full 5 g dose plus HMB and added leucine for layered, three-way muscle defense.
Reason 3
Closes The Vitamin K2 Gap Others Ignore
Protein tubs lean on calcium and vitamin D and leave vitamin K2 out completely. HOLDFAST adds 180 mcg of MK-7 to help defend bone density as the weight drops.
Reason 4
One Scoop Instead Of A Shelf Of Tubs
Protein, creatine, K2, electrolytes, and B-vitamins in a single daily scoop, so you're not buying and stacking five separate products to cover what GLP-1 drains.
Reason 5
An Everyday Habit, Not A Clinical Protocol
No appointments, no gating, no med-spa feel. Just one lightly vanilla scoop in water, milk, or your shake, timed to your daily shot.
30 Day Money-Back Guarantee
Retainix vs. Single-active GLP-1 protein powder
Other Brands
A multi-system preservation stack for muscle, bone, and energynot just protein
Built around one jobadding protein gramsFull 5 g creatine monohydrate for strength and power retention
Typically no creatine at allThree-way defense20 g whey isolate, 3 g HMB, and 2.5 g added leucine
Protein alone, sometimes with HMB180 mcg vitamin K2 (MK-7) plus 25 mcg (125% DV) vitamin D3 to defend bone density
Bone claim rests on calcium and vitamin D, no vitamin K2Closes the vitamin K2 gap with 180 mcg (150% DV) MK-7
Leaves the vitamin K2 gap open30DAYS
PROTECT WHAT MATTERS
30-Day Risk-Free Trial
If you don’t experience you're not holding onto more strength, energy, and vitality within 30 days, Return your tub for a full refund, no questions asked.—No forms, no explanations, no hassle..
Muscle Protection
Bone Density Support
Steady Energy
Description
HOLDFAST is a once-daily preservation stack built for men on Ozempic, Wegovy, and Mounjaro. Each scoop delivers 20g whey isolate, a full 5g clinical creatine dose, HMB, leucine, vitamin K2, D3, electrolytes, and methylated B-vitamins — the exact things GLP-1 medications quietly deplete. One scoop, timed to your shot, so protecting your muscle, bones, and energy becomes automatic instead of another thing to manage.
Why HOLDFAST?
You found the tool that finally moves the scale. But up to a fifth of what you're losing could be muscle, and your vitamin K2 is dropping too — nobody warned you. Generic whey tubs weren't built for this. HOLDFAST was engineered specifically around what GLP-1 medications take from your body, so winning the weight fight doesn't leave you frail, flat, or older than you feel.
Benefits
Protects lean muscle with a full clinical creatine dose, leucine-forward whey isolate, and HMB. Defends bone density with 180mcg vitamin K2 and 25mcg vitamin D3. Supports steady energy with methylated B-vitamins and taurine. Replenishes electrolytes for hydration on reduced intake. Light vanilla taste blends cleanly into water, milk, or a shake.
Recommended Use
Mix one 30g scoop into 8-12 oz of water, milk, or your shake once daily, timed to your GLP-1 injection. Most men notice steadier energy and strength within the first two weeks of consistent use.
Do you offer a guarantee?
Every HOLDFAST order is backed by a 30-day money-back guarantee. If it's not protecting your strength and energy the way you expected, contact us and we'll make it right.
Rated 4.6 Excellent 11,332 Reviews
93% of customers report:
keep their strength and energy while the weight comes off
Muscle Protection
Bone Density Support
Steady Energy
Clinical Creatine Dose
Vitamin K2 Coverage
Fits Your Daily Shot
Choose Your Offer
Order now for delivery by July 28 (in United States)
Free standard shipping over $75
30-day money-back guarantee
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Made in USA - cGMP facility
30 scoops / tub - 1 scoop daily - 30-day supply
What men on GLP-1s are saying
Reviews reflect individual experiences. Individual results may vary. Not intended to diagnose, treat, cure, or prevent any disease.
5.0
Verified CustomerRoger F.
“still holding onto my strength, so far” I didn't think a powder was going to do much, honestly, but I've been mixing a scoop into milk most mornings for a few weeks now and I think I'm keeping my strength better than I expected on Wegovy. My cardiologist seemed pleased at my last checkup, so I'm cautiously sticking with it for now.
5.0
Verified CustomerBrett K.
“wife made me get bone scan, doc was happy” Wife pushed me on this after my mom's hip thing. Bones checked out solid at my last appointment!
5.0
Verified CustomerWalter D.
“serve arm feels solid again” One scoop in water before pickleball, no measuring or mess. My serve arm stopped feeling shaky and I actually feel capable out there, not just lighter on the scale.
4.0
Verified CustomerNathan P.
Switched from a basic protein powder and this actually holds strength better on Wegovy. Doesn't fully dissolve though, always a little gritty at the bottom.
5.0
Verified CustomerWes G.
“didnt think a powder would do much” honestly wasnt expecting anything from this, figured it was just protein with a fancy label. been on it about a month now and my arms and legs dont look like theyre melting off the way they were before, still lifting the same weights too.
5.0
Verified CustomerMarty H.
“better than the other stuff” switched from a different powder and this one actually keeps my strength up in the gym!! worth the price!!
5.0
Verified CustomerJerry M.
mixes fine, tastes ok, and my doctor mentioned my bone density numbers were good at my last checkup so somethings working.
5.0
Verified CustomerHolly A.
“Dad seems like himself again” Got this for my dad after he started his GLP-1 shots. He mixes it into milk every morning, easy habit. Took about three weeks. He mentioned feeling energized and capable, not just thinner, which is exactly what we were worried about. Still carries groceries himself. Good.
4.0
Verified CustomerPatrick E.
it doesnt fully dissolve so theres a little grit at the bottom of the glass every time, which annoys me a bit, but my strength has actually held up during this whole diet so I keep buying it anyway.
5.0
Verified CustomerKeith S.
“box showed up fast” so the tub came in this plain brown box, no crushed corners or anything. keeps me from worrying about losing strength while the number on the scale drops.