The Strength Training Stack: Creatine, Beta-Alanine, Caffeine, and Citrulline Malate

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Resistance training is dominated by training volume, intensity, protein intake, and sleep. Among supplements, four have meta-analytic ISSN (International Society of Sports Nutrition) position-stand-grade evidence for strength and hypertrophy: creatine, beta-alanine, caffeine, and citrulline-malate">citrulline-malate">citrulline malate. None of them substitute for adequate total protein and progressive overload — but each adds a small, reproducible signal.

Layer 1: Creatine Monohydrate, 5 g Daily

Creatine is the most-evidenced sports supplement in any category. Hundreds of RCTs and the 2017 ISSN position stand confirm 5 g/day produces 5–15% strength gains during resistance training versus placebo and supports hypertrophy via increased training volume tolerance. Loading phase optional; daily intake is what matters. See creatine timing piece and sourcing piece.

Layer 2: Beta-Alanine, 4–6 g Daily — High-Volume / High-Reps

Beta-alanine is the rate-limiting precursor for muscle carnosine, which buffers H+ during high-intensity exercise. The 2015 ISSN position stand showed 4–6 g daily for 4+ weeks improves performance in 1–4 minute exhaustive efforts (think 12–20 rep sets, drop sets, density training) by ~2–3%. Less useful for 1–3 rep max work. Take in 2 g divided doses to minimize paresthesia. See beta-alanine piece.

Layer 3: Caffeine, 3–6 mg/kg — 30–60 Minutes Pre-Workout

Caffeine 3–6 mg/kg pre-resistance-training acutely increases force production, repetitions to failure, and training volume. Habituation reduces but does not abolish the effect. Useful as situational pre-workout rather than daily background. See caffeine piece.

Layer 4: Citrulline Malate, 6–8 g — 30–60 Minutes Pre-Workout

Citrulline malate at 8 g taken 60 minutes pre-workout increases repetitions to failure on bench press and squats and reduces post-exercise soreness in multiple RCTs. Mechanism involves nitric-oxide-mediated vasodilation and reduced ammonia accumulation. See citrulline malate piece.

Layer 5 (Optional): HMB-FA, 3 g Daily — Detraining or Cachectic States

HMB's strongest evidence is in older adults, hospitalized patients, and during forced detraining (illness, injury). For trained adults under progressive overload, the effect is small. Use only if you fit one of these specific populations. See HMB piece.

What NOT to Take

Avoid testosterone-boosting supplements — see our T-booster fraud piece. Avoid SARMs entirely — illegal, dangerous. Skip BCAAs in favor of complete protein (whey already contains the EAAs). Skip turkesterone — see our piece. Avoid pre-workout blends with hidden stimulants — see our pre-workout piece.

How to Run the Stack

Total daily protein 1.6 g/kg from whole food + whey post-workout. Creatine 5 g daily ongoing. Beta-alanine 4 g daily in 2 doses, loaded for 4 weeks before judging. On training days: caffeine 200–300 mg + citrulline 8 g 30–60 min before. Sleep 7–9 hours. Track 1RM and body composition every 8 weeks. See the related post-workout recovery stack.