💪 Fitness & Muscle
Supplements commonly used around training, recovery, and muscle support. Whole-diet protein and consistent training matter most. Evidence is strong for a few ingredients and limited for many.
More-studied options
Creatine Monohydrate
Evidence area: exercise & muscle
One of the most researched sports supplements, commonly used to support strength and training performance.
Caffeine
Evidence area: energy & focus
A common stimulant used for alertness. Timing matters for sleep; sensitivity varies widely.
Beetroot / Dietary Nitrate
Evidence area: exercise & muscle
A food-based source of nitrate commonly explored for exercise performance and circulation.
Whey Protein
Evidence area: exercise & muscle
A convenient complete protein commonly used to help meet daily protein needs around training.
Casein Protein
Evidence area: exercise & muscle
A slow-digesting dairy protein commonly used to help meet daily protein needs, often in the evening.
Potassium
Evidence area: heart & circulation
An essential electrolyte mineral; supplemental potassium interacts importantly with kidney function and several heart and blood-pressure medications.
Sodium (Electrolyte)
An essential electrolyte discussed mainly in heavy-sweat contexts; blood-pressure considerations apply and evidence should be read cautiously.
Beta-Alanine
Evidence area: exercise & muscle
An amino acid studied for high-intensity performance via muscle carnosine; commonly causes harmless skin tingling at larger single doses.
Mixed or limited evidence
Magnesium Glycinate
Evidence area: sleep & relaxation
A gentle, well-tolerated form of magnesium commonly used in evening and relaxation routines.
Ashwagandha
Evidence area: mood & stress
An adaptogenic herb commonly explored for everyday stress and relaxation. Research is developing.
Directly affects thyroid function (too little and too much both matter)
Taurine
A conditionally essential amino acid explored for fitness, heart wellness, and evening relaxation; research is mixed.
Trimethylglycine (TMG)
Evidence area: heart & circulation
A methyl donor discussed in relation to homocysteine metabolism and exercise; human evidence is limited.
Branched-Chain Amino Acids (BCAA)
Evidence area: exercise & muscle
Three amino acids popular around training; evidence is mixed, and whole protein sources are often compared favorably.
Citrulline
Evidence area: exercise & muscle
An amino acid studied for blood flow and performance; NIH ODS finds the evidence does not strongly support a benefit, and safety is not well assessed.
🩺 Safety cautions in this goal
- Magnesium Glycinate — has medication or health-condition caution categories
- Caffeine — has medication or health-condition caution categories
- Ashwagandha — has medication or health-condition caution categories
- Beetroot / Dietary Nitrate — has medication or health-condition caution categories
- Potassium — has medication or health-condition caution categories
- Sodium (Electrolyte) — has medication or health-condition caution categories
Caution categories are conversation prompts for a healthcare professional, not instructions.
📈 What people commonly track
- How you actually feel week to week (sleep, energy, mood)
- Whether a change followed adding or removing one thing
- Any side effects or digestive changes
- Relevant checkups or labs a professional suggests for your situation
Changing one thing at a time makes it easier to tell what helps.
🗣️ When to talk to a professional
- Symptoms are persistent, worsening, or interfere with life
- You take medication or have a health condition
- You are pregnant, nursing, or have a procedure scheduled
- You are considering several new supplements at once