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Goal picker
Pick a goal. We'll rank compounds by our editorial score for that use case.
Creatine monohydrate
The most extensively studied sports supplement in history. Increases phosphocreatine stores for rapid ATP regeneration, with emerging cognitive and neuroprotective benefits.
Whey Protein Isolate
Whey protein isolate is a highly filtered form of whey with 90%+ protein content, minimal lactose and fat, and the highest leucine content among common proteins.
Testosterone
The primary male sex hormone and an anabolic steroid. FDA-approved for testosterone replacement therapy (TRT) in hypogonadal men. Critical for muscle mass, bone density, libido, and mood.
Casein protein
A slow-digesting milk protein that forms a gel in the stomach, providing sustained amino acid release. Often used before sleep for overnight muscle protein synthesis.
Leucine
A branched-chain amino acid (BCAA) that is the primary dietary activator of mTOR and muscle protein synthesis. The most anabolic of the three BCAAs.
Beta-alanine
A non-proteinogenic amino acid that increases intramuscular carnosine, buffering hydrogen ions during high-intensity exercise lasting 1–4 minutes.
LGD-4033 (Ligandrol)
One of the most studied non-steroidal SARMs, originally developed by Ligand Pharmaceuticals and later licensed to Viking Therapeutics. Phase I/II human data is available.
IGF-1
Insulin-like Growth Factor 1, the primary mediator of growth hormone effects. Recombinant form (mecasermin) is FDA-approved for severe primary IGF-1 deficiency.
HMB (Beta-Hydroxy Beta-Methylbutyrate)
A metabolite of leucine that reduces muscle protein breakdown. Most beneficial for untrained individuals, older adults, or during caloric restriction.
Ostarine (MK-2866)
The most extensively studied SARM, developed by GTx Inc. for muscle wasting and osteoporosis. Reached Phase III trials but did not gain FDA approval.
RAD-140 (Testolone)
A potent non-steroidal SARM developed by Radius Health, notable for a high anabolic-to-androgenic ratio in preclinical models. Phase I data exists in breast cancer.
Ibutamoren (MK-677)
A non-peptide ghrelin receptor agonist (growth hormone secretagogue) that stimulates pulsatile GH and IGF-1 release orally. Studied in elderly, GH-deficient, and obese populations.