Evidence-Based Supplements for Muscle Growth & Performance
Use Supplements to Solve a Specific Problem
Separate useful supplements from hype, choose a practical dose, and understand what the evidence can—and cannot—promise for muscle growth, performance and recovery.
What actually fits
your routine?
Find your next useful step — and what you can skip.
Free to use · No email neededProtein powder can help fill a protein gap. Creatine is optional for strength and repeated high-intensity work. Low fish intake is a reason to review omega-3 sources. Sleep and stress do not diagnose a nutrient deficiency.
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- Training
- Food
- Routine
Your supplement shortlist
Ideas to review, not a shopping list.
| Focus | Your next move |
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For healthy adults · Is this guide right for me?
This is general guidance for adults aged 18 and over.
If you are under 18, pregnant or breastfeeding, take medication, or have a medical condition or diagnosed deficiency, get personal advice before changing supplements.
How the guide works & sources
General education for healthy adults. Your answers suggest priorities; they do not measure nutrient status, prescribe treatment or check every interaction. Food and recovery come first. Protein numbers are compared with the target you supply. Fish frequency does not establish a deficiency.
Answers stay in this page and are not stored or added to links. “Save my overview” downloads a text copy to your device. Optional newsletter signup is separate. Analytics events, where enabled through the site’s consent settings, contain no answers or result categories.
What Supplement Question Are You Trying to Answer?
Start with your actual decision: effectiveness, dosage, safety, or whether two products solve the same problem.
What Actually Helps Muscle Growth?
Prioritize supplements by evidence and practical value, then see the current THG Fit Checks for creatine and whey.
Explore All Creatine Guides
Find the right guide on benefits, dosage, loading, timing, water retention, safety, side effects, and realistic results.
Daily Intake, Timing, and Sources
Use total protein intake as the foundation, then refine meals, sources, quality, and convenience.
Creatine vs Protein Powder
Understand why these products do different jobs and when you may need one, both, or neither.
Start Here
Set Your Nutrition Baseline Before Choosing Supplements
Supplements can support performance, but they cannot replace appropriate calories, sufficient protein, and a nutrition plan that matches your goal.
Calculate Your MacrosSupplements can support progress, but they do not replace training, protein intake, calories, sleep, and recovery. Use the guides below to understand how THG assesses products and when protein powder is actually useful.
How THG Assesses Supplements
See how we separate ingredient evidence, product formula, verification, value, hands-on testing, and affiliate relationships.
Is Whey Protein Worth Taking?
Decide whether whey solves a real protein-intake problem and review the current research-based THG Fit Check.
How We Evaluate Supplements
Not all supplements are created equal. Recommendations throughout this section are based on strength of evidence, consistency of findings, practical relevance, safety, and real-world dosing. Read the complete THG supplement assessment method, including how we handle verification, value and affiliate links.
- Human randomized controlled trials
- Meta-analyses and systematic reviews
- Mechanistic plausibility supported by human data
- Practical relevance for hypertrophy and performance
- Realistic, evidence-based dosing protocols
Myths and Research, Explained
Separate a striking claim from what the study measured and what it means for your next decision.
Does Creatine Cause Water Retention?
Distinguish body water, digestive bloating, fat gain and changes in lean-mass measurements.
Creatine Without Exercise: Muscle Growth or Water Weight?
See what the trial measured, what remains uncertain and why a change in lean mass is not automatically new muscle tissue.
Creatine
Creatine monohydrate is one of the most studied sports supplements and can support strength, repeated high-intensity performance and training adaptations. Visit the Creatine Hub to browse the complete topic cluster, or choose a specific guide below.
Creatine Guides: Dosage, Benefits, Safety & Results
Choose the creatine question that matches what you need to decide, from first-time use to dosing, safety, water weight, and side effects.
Creatine: Benefits, Safety & Science
Read the complete evidence-based guide to how creatine works, its benefits, safety, dosing, and practical use.
How Much Creatine Per Day?
Learn the standard daily creatine dose and why consistency matters more than timing.
Creatine Loading: Is It Necessary?
Find out whether you need a loading phase, when it helps, and why daily dosing works long term.
Missed Creatine for a Few Days?
Learn what happens if you miss creatine, whether you need to reload, and why short gaps are not a problem.
Creatine and Water Retention
Understand why creatine can increase water weight and what that means for muscle growth and scale changes.
Creatine Upset Stomach
Learn why creatine may cause stomach discomfort and how to reduce bloating, cramps, or digestive issues.
Creatine Side Effects and Safety
Review the evidence on safety, common concerns, and when individual medical guidance may matter.
Creatine Before or After Training?
Learn why daily consistency usually matters more than whether you take creatine before or after a workout.
Creatine for Women
Explore benefits, dosing, safety, water-weight concerns, and common myths for women.
Protein
Protein intake is fundamental for hypertrophy. Start with the complete protein guide, then use the supporting articles for daily targets, meal distribution, protein quality, whey, casein, and practical use during fat loss or muscle gain.
Protein for Muscle Growth
Learn how protein supports hypertrophy, recovery, and muscle protein synthesis.
Protein Intake Per Day
Find out how much protein you should eat per day to support muscle growth.
How Much Protein Per Meal?
Learn how protein distribution across meals affects muscle-building nutrition.
Protein Quality and Digestibility
Understand how protein quality, amino acid profile, and digestibility affect hypertrophy nutrition.
Whey Protein for Muscle Growth
Learn when whey protein is useful and how it fits into a muscle-building diet.
Casein Protein Before Bed
Explore whether casein before bed improves recovery, muscle protein synthesis, or hypertrophy.
Protein for Fat Loss vs Muscle Gain
Learn how protein needs change when dieting, maintaining, or gaining muscle.
Animal vs Plant Protein
Compare animal and plant protein for muscle growth, amino acid quality, and practical use.
Best Protein Sources for Muscle Growth
Compare practical protein-rich foods and supplements by quality, convenience, calories, and preference.
Does Protein Timing Matter?
Understand how timing fits beneath total daily intake and a sustainable meal structure.
Vitamins, Minerals & Dietary Gaps
Some supplements are most useful when they correct a low intake or deficiency, while others may support general health and recovery. Their value depends heavily on your diet, health status, and individual needs. If you suspect a deficiency or have a medical condition, seek qualified clinical guidance.
Vitamin B12 for Vegans
Reliable sources, practical label checks and the difference between a maintenance routine and treating a deficiency.
Are Multivitamins Worth It?
Work out whether a broad formula solves a real problem, and check for overlap with supplements you already take.
Magnesium Glycinate vs Citrate
Compare sleep evidence, gut effects and elemental doses without assuming one form is the winner.
Omega-3 for Muscle Growth
Learn what omega-3 may do for recovery, health, and anabolic sensitivity — and why it is not a direct muscle-building supplement.
Vitamin D for Muscle Growth and Strength
Understand when vitamin D may support muscle function and strength, and why correcting a deficiency matters more than taking extra.
Magnesium for Muscle Growth and Recovery
Learn how magnesium supports normal muscle function and recovery, who may benefit from supplementation, and which forms to consider.