Ingredient Library
Understand the ingredient before you judge the product.
Use independent evidence guides to separate established nutrient roles, human trial results, formulation differences, safety limits and unresolved claims. The library now connects the site's established ingredient guides with fifty additional high-priority research pages. For label-dose transparency, see our proprietary blends evidence guide.
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Published Products
Explore all current MPS evidence-led product reviews.
How to use the ingredient library
The ingredient library is most useful when the reader starts with the evidence question rather than the product claim. Each guide is designed to separate mechanism, human outcomes, dose or preparation, safety and the limits of applying ingredient evidence to a finished formula.
| Your question | Start with | What to verify next |
|---|---|---|
| Does an ingredient support testosterone? | Vitamin D, zinc, ashwagandha, Tongkat Ali | Baseline status, extract identity, population and reproducibility. |
| Does it support prostate-related outcomes? | Beta-sitosterol, Pygeum, stinging nettle, saw palmetto | Outcome studied, extract/preparation and limits of symptom evidence. |
| Does it support training or recovery? | Creatine, caffeine, electrolytes, whey protein | Training context, total intake, timing and whether supplementation solves a real gap. |
| Is the product dose transparent? | Proprietary blends explained | Individual amounts, ingredient form and whether research-dose comparison is possible. |
Interpretation: ingredient evidence is strongest when the exact preparation, dose, population and outcome can be matched to the claim being evaluated.
Established ingredient evidence guides
Start with the existing MPS guides already used across the site's evidence and safety architecture.
Tongkat Ali: Benefits, Dosage and SafetyTestosterone, extract identity and safety.Ashwagandha for MenStress, testosterone and extract variation.Fenugreek and TestosteroneHuman evidence and claim limits.D-Aspartic AcidTestosterone evidence and dosing context.ZincDeficiency, testosterone and upper-intake safety.MagnesiumForms, testosterone context and safety.BoronSHBG, testosterone evidence and safety.Creatine MonohydratePerformance, dosage and safety.Vitamin DDeficiency, testosterone and dosing.Maca RootLibido, energy and evidence limits.Whey ProteinProtein intake, forms and training evidence.CaffeineExercise performance, timing and safety.ElectrolytesHydration, sodium and exercise context.
Sleep, stress & cognition
Research guides organized around this evidence theme.
Magnesium Glycinate: Absorption, Sleep Evidence, Dosage and SafetyEvidence and safety guide for magnesium glycinate.Melatonin: Sleep Evidence, Dosage, Timing and SafetyEvidence and safety guide for melatonin.L-Theanine: Stress, Focus, Sleep Evidence and SafetyEvidence and safety guide for L-theanine.Lion's Mane: Cognition Evidence, Dosage and SafetyEvidence and safety guide for lion's mane.Ginkgo Biloba: Cognition, Circulation Evidence and SafetyEvidence and safety guide for ginkgo biloba.Magnesium L-Threonate: Cognition Evidence, Dosage and SafetyEvidence and safety guide for magnesium L-threonate.
Gut & general wellness
Research guides organized around this evidence theme.
Probiotics: Benefits, Strain Evidence, Dosage and SafetyEvidence and safety guide for probiotics.Psyllium Husk: Fiber, Gut Evidence, Dosage and SafetyEvidence and safety guide for psyllium husk.Akkermansia: Microbiome Evidence, Products and SafetyEvidence and safety guide for Akkermansia supplement.Colostrum: Gut, Immune, Exercise Evidence and SafetyEvidence and safety guide for colostrum supplement.
Healthy ageing & metabolic
Research guides organized around this evidence theme.
Turmeric and Curcumin: Benefits, Bioavailability and SafetyEvidence and safety guide for turmeric curcumin.CoQ10: Energy, Heart Evidence, Dosage and SafetyEvidence and safety guide for CoQ10 supplement.Rhodiola Rosea: Fatigue, Stress Evidence and SafetyEvidence and safety guide for rhodiola rosea.N-Acetyl Cysteine: Evidence, Dosage, Interactions and SafetyEvidence and safety guide for N-acetyl cysteine.Berberine: Metabolic Evidence, Interactions and SafetyEvidence and safety guide for berberine.NMN: NAD+, Healthy-Ageing Evidence and SafetyEvidence and safety guide for NMN supplement.Nicotinamide Riboside: NAD+ Evidence, Dosage and SafetyEvidence and safety guide for nicotinamide riboside.
Vitamins & minerals
Research guides organized around this evidence theme.
Vitamin B12: Deficiency, Energy Claims, Dosage and SafetyEvidence and safety guide for vitamin B12.Vitamin K2: Bone, Heart Evidence, Dosage and SafetyEvidence and safety guide for vitamin K2.Vitamin B6: Benefits, Deficiency, Upper Limits and SafetyEvidence and safety guide for vitamin B6.Vitamin E: Antioxidant Claims, Evidence and SafetyEvidence and safety guide for vitamin E.Selenium: Thyroid, Male Health Evidence and SafetyEvidence and safety guide for selenium supplement.Calcium: Bone Evidence, Dosage and SafetyEvidence and safety guide for calcium supplement.Iron: Deficiency, Performance, Dosage and Safety for MenEvidence and safety guide for iron supplement.Copper: Deficiency, Zinc Balance, Dosage and SafetyEvidence and safety guide for copper supplement.Choline: Brain, Performance Evidence, Dosage and SafetyEvidence and safety guide for choline supplement.Potassium: Hydration, Deficiency, Dosage and SafetyEvidence and safety guide for potassium supplement.Vitamin C: Immunity, Exercise Evidence, Dosage and SafetyEvidence and safety guide for vitamin C.
Protein & connective tissue
Research guides organized around this evidence theme.
Performance & exercise
Research guides organized around this evidence theme.
L-Citrulline: Performance, Circulation, Dosage and SafetyEvidence and safety guide for L-citrulline.L-Arginine: Blood Flow, Performance Evidence and SafetyEvidence and safety guide for L-arginine.Beta-Alanine: Performance Evidence, Dosage and TinglingEvidence and safety guide for beta-alanine.Beetroot and Nitrate: Endurance, Blood Flow and SafetyEvidence and safety guide for beetroot nitrate.Taurine: Exercise, Energy, Hydration Evidence and SafetyEvidence and safety guide for taurine.Betaine: Strength, Power, Dosage and Evidence ReviewEvidence and safety guide for betaine.HMB: Muscle Preservation, Recovery Evidence and SafetyEvidence and safety guide for HMB supplement.Leucine: Muscle Protein Synthesis, Dosage and EvidenceEvidence and safety guide for leucine supplement.Essential Amino Acids: Muscle and Recovery EvidenceEvidence and safety guide for essential amino acids.BCAAs: Muscle, Recovery Evidence, Dosage and LimitationsEvidence and safety guide for BCAA supplement.Cordyceps: Exercise, Energy Evidence, Dosage and SafetyEvidence and safety guide for cordyceps.
Men's health botanicals
Research guides organized around this evidence theme.
Panax Ginseng: Male Vitality, Performance Evidence and SafetyEvidence and safety guide for Panax ginseng.Shilajit: Testosterone, Energy Evidence and SafetyEvidence and safety guide for shilajit.Beta-Sitosterol: BPH, Urinary Evidence and SafetyEvidence guide for beta-sitosterol and urinary symptom research.Saw Palmetto: Prostate Evidence, Dosage and SafetyEvidence and safety guide for saw palmetto.Pygeum: Prostate and Urinary Evidence, Dosage and SafetyEvidence and safety guide for pygeum.Stinging Nettle: Prostate Evidence, Uses and SafetyEvidence and safety guide for stinging nettle.Pumpkin Seed Extract: Prostate Evidence and SafetyEvidence and safety guide for pumpkin seed extract.Fadogia Agrestis: Evidence Gaps, Safety and ClaimsEvidence and safety guide for Fadogia agrestis.Mucuna Pruriens: L-DOPA, Male Health Evidence and SafetyEvidence and safety guide for Mucuna pruriens.Tribulus Terrestris: Testosterone, Libido Evidence and SafetyEvidence and safety guide for Tribulus terrestris.Horny Goat Weed: Libido Evidence, Dosage and SafetyEvidence and safety guide for horny goat weed.
Product discovery is separate from evidence.
These pages explain what the research supports and where uncertainty remains. For current product-category comparison, continue to the complementary MenPS catalog.
Browse MenPS product categories