Need? No — every adaptation this site describes runs on training, food and sleep. Worth considering? One supplement has evidence deep enough to take seriously: creatine monohydrate, the most-studied performance supplement in existence, with modest, real benefits for strength training. Most of the rest of the shelf is expensive optimism with excellent packaging.
The scope line as always: general information, not prescription — medications, conditions and anything clinical route through your physician or a dietitian first.
The shelf, ranked by evidence
| Supplement | Honest status | Note |
|---|---|---|
| Creatine monohydrate | The real one | Modest strength and lean-mass benefits across hundreds of studies; a few grams daily, loading optional; cheap generic monohydrate is the answer |
| Protein powder | Food in a scoop | A convenience for hitting the protein range, not a supplement in any magical sense |
| Caffeine | Works, self-administered | Genuine performance effects; most people already run this program via coffee |
| Vitamin D | Population-dependent | A rainy-latitude conversation for your physician and bloodwork, not a gym decision |
| Pre-workouts | Caffeine in a costume | The active ingredient is mostly the caffeine; the tingles are marketing |
| Fat burners, testosterone boosters, BCAA drinks | Skip | Evidence ranges from thin to contradicted; the money is better spent on food or coaching |
Creatine, practically
The boring protocol wins: three-to-five grams of plain monohydrate daily, any time of day, indefinitely — loading phases speed saturation slightly and matter little. Expect subtle help (an extra rep on hard sets, slightly better training quality that compounds) and a kilogram-ish of water-weight arrival early, which is cellular hydration rather than fat and worth knowing before the scale reports it. It earns specific mention for older trainees, where research alongside resistance training is encouraging — relevant to the louder-signal problem. Well-tolerated in healthy adults across decades of study; kidney-disease and medication cases are physician conversations first.
The ordering that keeps money honest
Supplements are the last five percent bought before the first ninety-five: no powder outperforms a fixed sleep debt, a closed protein gap, or a month of honest effort calibration — the plateau audit's suspects, all cheaper than the shelf. The working rule for any bottle: if you cannot name the specific gap it fills and the evidence for it in one sentence, it is optimism, and optimism is available free. Creatine passes that test; most of the aisle does not.
Common questions
Does creatine cause hair loss or kidney damage?
The kidney concern is unsupported in healthy adults across long-term studies (pre-existing kidney disease is its own conversation); the hair-loss worry traces to one small study never well replicated. Both persist as folklore rather than findings.
When will I notice creatine working?
Within a few weeks of daily use, as saturation completes — and subtly. Anyone promising transformation is selling the label, not the molecule.
Are greens powders worth it?
As insurance they are expensive and partial; as vegetables they are not vegetables. Fine as a habit you enjoy, unnecessary as a strategy.
