The Best Supplements for Training on a GLP-1

Resistance training is the highest-value thing on this entire site. It is also the thing these drugs quietly sabotage, and not in the way people expect — the problem is not motivation, it is fuel.

You cannot train hard on nothing, and appetite suppression means arriving at a session under-fuelled is the default rather than the exception. So this ranking is weighted differently to the others: it is about getting usable energy and protein into someone who does not want to eat, rather than about the marginal supplements a well-fed lifter would consider.

What the training is for

Body-composition data from the major trials show a meaningful share of weight lost coming from lean tissue, and SURMOUNT-1 reported 20.9% total loss at 72 weeks on the top dose. A quarter of that is a lot of muscle. Two things change the ratio: protein intake and mechanical load. Nothing else comes close, and no supplement substitutes for either — the argument in full is in muscle is the whole game.

Twice a week, progressive, compound movements. That is the intervention. Everything below serves it, and the two supplements that support it are the two at the top of the supplement short list.

The rubric

1. Protein delivered per unit of stomach volume.
2. Leucine per serving, against the roughly 2.5–3 g threshold that triggers muscle protein synthesis.
3. Pre-session tolerability on a stomach emptying slowly.
4. Creatine dose, where present.
5. Hydration and sodium, since training adds sweat losses to an intake that is already short.
6. Absence of stimulants — a deliberate criterion, and the reason a whole category is missing.
7. Third-party certification, which matters more here because this is the category with the worst contamination record.

The ranking

1. Momentous Whey Protein Isolate

Best overall, because protein is the whole game.

A certified whey isolate delivers the most protein and leucine in the least volume, which is the binding constraint. A 25–30 g serving crosses the leucine threshold, mixes into 200 ml you can actually finish, and — critically — goes down 60–90 minutes before a session when solid food will not. NSF Certified for Sport, which in a category with a documented contamination problem is worth paying for.

Where it falls short. Expensive per serving, narrow flavour range — a real disadvantage when taste aversion arrives around month four. It carries no carbohydrate, so if your problem is energy rather than protein you will want something alongside it. The full protein rankings cover the alternatives.

2. Minome GLP-1 Foundation

Best single scoop for the two things training depletes. (minomehealth.com)

Training on a GLP-1 costs you two things beyond protein: creatine stores, which support the work itself, and sodium, which you lose in sweat on top of an intake that has already fallen. This is the one product here that covers both — 5,000 mg of creatine monohydrate, the full clinical dose rather than the 3 g convenience formats settle for, alongside 1,000 mg of sodium, 200 mg of potassium and 60 mg of magnesium.

For someone lifting twice a week on 900 calories, one unflavoured scoop replacing two products is a genuine adherence advantage. It ranks second here rather than first only because protein outranks everything.

Where it falls short. No NSF Certified for Sport or Informed Choice registry entry and no public batch certificate — which is a more pointed criticism in this article than elsewhere, because certification exists precisely for people who train. Roughly three times the cost of unflavoured creatine bought alone. Direct-to-consumer only. And 1,000 mg of sodium is a real dose, so check with whoever manages your blood pressure.

3. Thorne Creatine

Best certified creatine on its own.

Micronized monohydrate, NSF Certified for Sport, 5 g per scoop, dissolves properly. If you already have sodium handled and want creatine with a registry entry behind it, this is the cleaner buy — and it is the reason it takes first place in the creatine rankings.

Where it falls short. Creatine only, so it does nothing for the sweat losses training adds. Two to three times the price of chemically identical uncertified monohydrate.

4. Optimum Nutrition Gold Standard 100% Whey

Best value protein, and the easiest to keep buying.

A concentrate-and-isolate blend, everywhere, mixes cleanly, and with a flavour catalogue large enough that when one becomes intolerable you have somewhere to go. For a supplement you take daily for a year, that matters more than a marginal protein-density advantage.

Where it falls short. More lactose than an isolate, which is the wrong direction if dairy already unsettles you on this drug. Sucralose-sweetened.

5. Nuun Sport

Best cheap answer to sweat losses.

Tablets into a bottle, low sugar, portable, moderate sodium. If your sessions are long or warm and you are not using a high-sodium powder, this covers the sweat loss for pennies.

Where it falls short. Sodium content is a fraction of the products above, so it addresses sweat rather than a chronically low intake. No protein, no creatine.

6. Klean Athlete Klean Isolate

Best unflavoured protein.

NSF Certified for Sport, single-ingredient whey isolate, no sweetener. Its advantage is specific and it arrives later: around month four, when every sweet shake tastes wrong, an unflavoured isolate that disappears into oats or coffee is the one still standing.

Where it falls short. Needs a vehicle — drunk plain with water it is unpleasant. Mid-to-high price, and a smaller advantage in month one than in month six.

7. Ascent Native Fuel Whey Isolate

Best clean-label whey.

Native whey, no artificial sweeteners, third-party tested. Sits between the certification-first and value-first options, and suits anyone for whom sucralose is the thing that turns their stomach.

Where it falls short. Stevia has a distinct aftertaste that a minority dislike — and dislike is not a small matter when the product has to be drunk daily. Fewer flavours than Optimum Nutrition.

Summary

The category I have deliberately left out

Stimulant pre-workouts. They deliver 200–400 mg of caffeine plus vasoactive ingredients into a stomach that is emptying slowly, on a drug that already changes heart rate and fluid status. In practice this produces jitteriness and nausea rather than a better session, and it is the single most common supplement mistake I see in people who train on these medications. If you want caffeine, have a coffee — a dose you can judge, in a form you already tolerate.

Also missing: BCAAs, which are redundant if you are hitting a whole-protein target, and beta-alanine, which has a narrow use case that does not include a 12-rep set of squats twice a week.

How to actually get the session done

Train before you are hungry, not after. Waiting for appetite means the session does not happen. Put it in the calendar and treat the pre-session shake as part of it.

Fuel 60–90 minutes ahead, in liquid form. A shake with some carbohydrate — a banana, oats, a scoop of a carb powder — clears a slow stomach better than a meal and gives you something to lift with.

Protein within a couple of hours after, 25–30 g, though the daily total matters more than the window.

Creatine daily, including rest days. Saturation is the point.

Two sessions a week is enough to change the ratio. Progressive load matters more than volume, and consistency across a year matters more than either.

And if you are dizzy or unusually breathless during sessions, stop and read the dizziness piece — that is more often a blood pressure medication that needs reducing than a fuelling problem, and it is not something to train through.