On a GLP-1, about 1 in 4 pounds you lose isn’t fat — it’s muscle.* And when two bites fills you up, protein is the hardest thing to get in. Rebuild is 100% whey protein isolate — 22 g of protein in just 120 calories — a full protein dose in one glass, for the days a real meal feels impossible. Smooth vanilla, mixes in seconds. Paired with resistance training, it helps you keep the lean muscle that keeps you strong.*
*These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease. Rebuild is a dietary supplement, not a treatment for any medication or condition.
On a GLP-1, appetite drops and portions shrink. That’s the plan — but protein is usually the hardest target to hit when food just isn’t appealing, and your body needs it to hold onto lean muscle as the weight comes off. Rebuild gives you 22 grams of pure whey isolate — just 120 calories, 0 g added sugar — in one easy vanilla glass, so you can keep hitting your protein goal even on the days you can barely finish a meal. Paired with resistance training and adequate protein, it helps you keep the strength you’re working so hard to protect.*
Meat turns metallic. Nothing sounds good. Two bites and you’re full. That’s the reality of a suppressed appetite — and it’s exactly why a fast, low-volume glass wins. Isolate is filtered to the purest form of whey: maximum protein, minimal lactose, so it’s gentle on a gut that’s adjusting. Creamy French vanilla, naturally sweetened, mixes smooth in cold water in ten seconds.
Holding onto muscle during weight loss comes down to two things: enough protein and resistance training. Rebuild makes the protein part easy with 22 g in a single serving.*
Whey isolate is a complete protein rich in leucine, the amino acid that signals your body to build and maintain muscle — filtered for maximum protein with minimal fat and lactose.*
Isolate is filtered to remove most lactose, and apple pectin adds digestive support — gentle on a gut that’s adjusting to smaller meals.*
In a randomized trial, higher protein paired with intense resistance training during a calorie deficit supported greater lean-mass gain (+1.2 kg) than lower protein — while still losing fat.*
RCT, lean mass in a deficitLongland et al., Am. J. Clin. Nutr., 2016 · PMID 26817506A meta-analysis of 22 randomized trials (680 people) found protein supplementation with resistance training augmented gains in muscle mass and strength, in younger and older adults alike.*
Meta-analysis, protein + trainingCermak et al., Am. J. Clin. Nutr., 2012 · PMID 23134885Across weight-loss trials, a higher-protein calorie-reduced diet helped preserve lean tissue — about 0.4 kg less fat-free mass lost than on standard protein.*
Meta-analysis, protein in weight lossWycherley et al., Am. J. Clin. Nutr., 2012 · PMID 23097268Two scoops in cold water or milk. A vanilla shake that takes thirty seconds and hits your protein goal.
Even on days food isn’t appealing, one glass keeps your protein target met so your body has what it needs.*
Paired with resistance training, adequate protein helps you hold onto the lean muscle that keeps you strong.*

Drink Rebuild every day for two full months. If it isn’t earning its place in your routine, write to us for a full refund. No forms, no interrogation. Our word, kept in writing.
Creamy French vanilla, naturally sweetened — no artificial sweeteners. It mixes smooth into cold water, and even better into milk or a milk alternative.
When you eat much less, protein is the hardest nutrient to hit, and your body needs it to hold onto lean muscle as you lose weight. Rebuild makes it easy to reach your protein target in one glass. Paired with resistance training, it helps you keep your strength.*
22 grams of pure whey isolate per two-scoop serving, about 24 servings per tub. Most people have one serving a day; you can have more to reach your personal protein goal.
Yes — whey is a milk protein, so Rebuild isn’t suitable if you have a milk allergy. It’s 100% whey protein isolate with natural vanilla flavors, MCT oil powder, apple pectin, sunflower lecithin, sea salt and stevia — and isolate is naturally very low in lactose.
Rebuild is a protein supplement, not a drug, and makes no claim to treat or interact with any medication. As with anything new alongside a GLP-1, run it by your doctor, then enjoy it with confidence.
Drink it daily for 60 days. If you don’t feel it’s earning its place, write us for a full refund.