Creatine Monohydrate

Creatine Monohydrate is a 8.5–9.0/10 fit for people weighing strength and power, muscle growth, and cognition and focus, especially when the goal is a tracked experiment with clear endpoints. The strongest evidence anchor is Avgerinos 2018: 6 RCTs; short-term memory and processing speed; vegetarian and elderly amplification. Lanhers 2015 adds a second signal, but Creatine Monohydrate still has gaps around large trials, long-term outcomes, responder profiles, or real-world adherence. That makes Creatine Monohydrate useful for a defined reader, while weaker for broad anti-aging or catch-all wellness claims. In practice, Creatine Monohydrate belongs after basics, diagnosis when relevant, and a stop rule based on symptoms, labs, sleep, or performance.

✅ Best for: Strength and muscle-growth athletes (the core indication, 50+ years of evidence). Adults over 50 for muscle preservation, bone density, and cognitive support, especially when combined with resistance training. Vegetarians and vegans who run lower baseline muscle and brain creatine stores and respond more strongly to supplementation. Cognitive workers under sleep deprivation, demanding mental load, or acute stress conditions where the brain phosphocreatine buffer matters. Anyone seeking the highest evidence-to-cost ratio supplement available across nearly any health goal.

❌ Avoid if: You have pre-existing chronic kidney disease (eGFR below 60, CKD stage 3 or higher) without nephrologist supervision. You have McArdle disease (myophosphorylase deficiency) or GAMT deficiency (for GAA-containing creatine blends only). You are using a HCl-only or ethyl-ester creatine product (no efficacy benefit, 5-15× the cost). You expect dramatic subjective enhancement: most users feel nothing, and benefits emerge as performance and body composition data, not subjective experience. You have a history of disordered eating where the temporary intracellular water weight (1-2 kg in first weeks) would trigger compensatory restriction.