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Tom’s Weight LossRankings
Dietary supplementNot tested · not scored

Youtheory GLP-1 Support Muscle Guard Protein

A protein powder sold specifically to people losing weight on a GLP-1, built around muscle and bone retention rather than appetite or metabolism. The framing is the most clinically sensible in this section: rapid weight loss on these medications costs lean tissue as well as fat, and protein intake is one of the two interventions with real evidence behind it. It is described as a doctor-formulated four-in-one complex, though the composition is not published on the page we captured.

Last reviewed · researched from the manufacturer’s published pages by Tom

What’s in it

Amounts are shown only where the manufacturer publishes them. Anything without a figure is undisclosed — and for an active ingredient, an undisclosed dose is the central problem with this category.

  • Four-in-one complex covering protein, muscle, bone and digestive supportamount not published

    Described this way on the page we captured; the individual ingredients and amounts were not published there

How the manufacturer says it works

Youtheory states that weight loss on a GLP-1 can affect muscle and bone health as well as fat, and describes the product as a doctor-formulated four-in-one complex of science-backed ingredients intended to help preserve muscle, protect bone health and support digestion.

What the evidence actually supports

This is the right problem to be selling into. A substantial share of the weight lost on GLP-1 medications is lean mass, and appetite suppression makes it easy to fall well short of protein needs without noticing. Adequate protein intake and resistance training are the two interventions with genuine evidence for preserving lean tissue during weight loss, and protein is the one a supplement can actually deliver. Framing a product around that, rather than around raising your own GLP-1, is honest.

Where that evidence stops

The composition is not published on the page we captured — no protein source, no grams per serving, no amino acid profile and no detail on the bone or digestive components. For a protein product the grams per serving is the entire point, and without it there is no way to know whether this closes your protein gap or barely touches it. 'Doctor-formulated' is a marketing description, not a regulatory or evidentiary standard. Protein supports muscle retention alongside resistance training; on its own it does not prevent lean mass loss, and no supplement does. The reference to 'Ozempic face' is cosmetic framing of what is in fact facial fat and tissue loss from rapid weight reduction — protein intake may help, but the phrase belongs to marketing rather than medicine.

Strengths and problems

Strengths

  • Targets lean mass loss, which is the genuine clinical risk of GLP-1 weight loss and is ignored by most of this category
  • Does not claim to raise GLP-1 or substitute for a prescription
  • Addresses bone health as well as muscle, which matters during rapid weight loss
  • Reasonably priced at $39.99

Problems

  • Protein grams per serving are not published — for a protein product that is the number that matters
  • The four-in-one complex is not itemised, so nothing in the formula can be evaluated
  • 'Doctor-formulated' carries no defined standard
  • Directions, allergens, third-party testing and refund terms were not published on the page we captured

What the manufacturer publishes

Publishes 1 of 8 standard terms.

Intended use
Sold as a dietary supplement providing nutritional support during weight loss, not as a treatment for any condition.
Directions
Not publicly disclosed on the pages we captured.
Warnings
Not publicly disclosed on the pages we captured.
Allergens
Not publicly disclosed on the pages we captured.
Third-party testing
Not publicly disclosed on the pages we captured.
Pricing
$39.99 at capture.
Subscription
Not publicly disclosed on the pages we captured.
Refunds
Not publicly disclosed on the pages we captured.
Shipping
Not publicly disclosed on the pages we captured.

May suit

Someone on a GLP-1 who is struggling to hit protein targets on a reduced appetite — provided they check the grams per serving on the label before buying.

Do not use if

  • You have kidney disease — protein intake needs medical guidance
  • You need a specific protein target and cannot get the grams per serving from the label
  • You have dairy or other allergies and cannot get allergen information

Frequently asked

Do I need extra protein on a GLP-1?

Very possibly. These medications work by cutting how much you eat, and protein is usually the first thing to fall because it is filling and often the least appealing when nausea is present. Losing lean mass alongside fat lowers your resting metabolic rate and makes regain more likely when you stop. Protein plus resistance training is the evidenced countermeasure. Whether you need a powder depends on what you are managing to eat — a food-first approach works if you can hit the target.

What is “Ozempic face”?

A popular name for the facial hollowing that follows rapid weight loss, as fat is lost from the face along with everywhere else. It is not a specific drug effect and not a disease — it happens with substantial rapid weight loss by any means. Slower loss and preserving lean tissue may reduce it. Treat the phrase as marketing shorthand rather than a clinical entity.

Sources

Captured . Manufacturer pages change — check the current version before relying on anything.