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Prioritise progressive overload, enough energy and protein (about 1.6 g per kg of body weight per day), and sleep. The supplements that reliably add anything are mainly creatine, plus protein when food falls short.
Strength and muscle come from progressive overload plus protein and recovery. On that base, creatine (3–5 g/day) is the most-studied, cheap, effective add-on, and protein powder is a convenient way to hit your target. Most other products add little.
Last reviewed 2026-08-06. Educational only; not diagnosis or treatment.
Where supplements fit: Supplements do not build muscle; on a solid base, creatine and protein give a small, reliable nudge.
Ranked by importance. Supplements are one component of the larger system below.
Gradually adding load, reps or sets over time is the single biggest determinant of strength and size, built on consistent technique.
Supplement role: No supplement role.
Muscle growth needs adequate energy and protein spread through the day (about 1.6 g/kg, with diminishing returns beyond); aggressive dieting makes gaining hard.
Supplement role: Protein powder tops up what food misses.
Adaptation happens during rest; poor sleep blunts strength gains and training quality.
Supplement role: Not replaceable by supplements.
Meaningful change takes months; be sceptical of products promising dramatic short-term results.
Supplement role: Beware products selling a shortcut.
Ordered by strength of case; even 'strong' does not mean mandatory for everyone. You do not need to take all of these — most matter only when there is a genuine shortfall.
The supplement with the most consistent evidence for improving strength and lean mass alongside resistance training. 3–5 g/day is enough.
Sources: International Society of Sports Nutrition · International Society of Sports Nutrition · U.S. National Library of Medicine (PubMed)
A convenient, reliable way to reach roughly 1.6 g/kg when food alone falls short, supporting hypertrophy.
Sources: International Society of Sports Nutrition · Ministry of Health, Labour and Welfare (Japan)
Used for sleep and cramps, but clear benefit is limited to those with low intake.
Sources: Ministry of Health, Labour and Welfare (Japan) · NIH Office of Dietary Supplements
Little added benefit when protein is adequate; complete protein sources are superior.
Sources: International Society of Sports Nutrition · National Institute of Health and Nutrition (Japan)
Creatine monohydrate at 3–5 g/day is the best-value add-on; check your protein intake too.
Raise food intake and top up the gap with protein powder, spread across the day at roughly 20–40 g per serving.
Keep protein higher (1.6–2.2 g/kg) and keep training; creatine remains useful while dieting.
Mostly unnecessary — plain caffeine covers the stimulant, and eating more real food is a cheaper, surer way to gain.
Commonly over-marketed for this goal. Prioritise food, lifestyle and medical care first.
BCAAs/EAAs when protein is adequate
Add virtually nothing on top of adequate complete protein.
Testosterone boosters
No sound evidence of a meaningful effect in healthy men.
Mass gainers as a first resort
Expensive sugar and powder; adding calories from food is cheaper and easier to manage.
Multi-ingredient pre-workouts
The active part is mostly caffeine; other doses are opaque and can disturb sleep.
Pick a plan with built-in progressive overload and log your sessions.
Count total daily protein and see whether you reach about 1.6 g/kg.
Prioritise recovery by steadying sleep duration and quality.
Once the base is set, take 3–5 g/day of creatine monohydrate daily.
Judge progress by your load/rep log and adjust the program when you stall.
Short, concrete plans to try. Reassess early if they do not fit.
| Plan | Best for | Steps | Review |
|---|---|---|---|
| Four-week base | People just starting out |
| After four weeks, check progress in your log. |
| Creatine start | People with the base in place |
| Judge strength change at 4–8 weeks. |
Protein and creatine are backed by sports-nutrition position stands and many RCTs. Both work only alongside training, and the effect is modest on its own. BCAAs and 'booster' products are generally weak or redundant once protein is adequate.
Sources: International Society of Sports Nutrition · International Society of Sports Nutrition · International Society of Sports Nutrition · Ministry of Health, Labour and Welfare (Japan) · National Institute of Health and Nutrition (Japan)
Mind kidney function, total protein, anti-doping rules, and overreaching.
Creatine is well tolerated in healthy people, but check with a clinician if you have kidney disease and keep total protein reasonable in that case. Athletes should know certification lowers but never removes contamination risk and should check their sport's rules. Stop and seek care for sharp joint or back pain, numbness, or chest symptoms.
Sources: International Society of Sports Nutrition · International Society of Sports Nutrition · National Institute of Health and Nutrition (Japan) · Consumer Affairs Agency (Japan)
These are not a purchase ranking. Review the evidence and safety before deciding.
Protein powders and drinks are a convenient way to add protein when meals fall short. They're used by active people and by anyone who may not get enough protein.
Role in the body: Protein provides building blocks for muscle, skin and enzymes, and supports daily maintenance and post-exercise recovery.
View detailsCreatine is one of the most studied supplements for supporting short, high-intensity exercise performance.
Role in the body: Involved in rapidly regenerating muscle energy (ATP).
View detailsAmino acids are protein's building blocks; BCAA/EAA are used around exercise. If protein intake is adequate, added need is lower.
Role in the body: Serve as building blocks for protein synthesis.
View detailsMagnesium is an essential mineral involved in many bodily processes. Considered by those who may fall short in diet or want a calmer evening routine.
Role in the body: Involved in energy metabolism, muscle and nerve function, and bone maintenance.
View detailsElectrolytes replace sodium, potassium and more lost in sweat. Used by very active people and in hot weather.
Role in the body: Support fluid balance and muscle and nerve function.
View detailsStrength training basics
| Protein | 20–30 g / serving, 1–2× / day | After training |
| Creatine | 3–5 g / day (daily) | Take daily |
| Magnesium | 200–400 mg / day | After dinner |
Neither is mandatory, but protein is a key building block and many use a powder to fill dietary gaps. Creatine is one of the more studied categories in healthy adults. Get your diet in order first, then consider them.
View detailsTotal daily protein matters more than exact timing. Post-workout or as a snack — whatever you can keep to — works. Follow the labeled serving.
View detailsPrioritise progressive overload, enough energy and protein (about 1.6 g per kg of body weight per day), and sleep. The supplements that reliably add anything are mainly creatine, plus protein when food falls short.
View detailsChoose one relevant outcome before starting, record a baseline, and review it at the interval in the guide. Do not use a supplement feeling as a diagnosis.
View detailsCreatine is well tolerated in healthy people, but check with a clinician if you have kidney disease and keep total protein reasonable in that case. Athletes should know certification lowers but never removes contamination risk and should check their sport's rules. Stop and seek care for sharp joint or back pain, numbness, or chest symptoms.
View details