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Best Supplement Guides
If you just want the answer - which one should I actually buy? - start here. Each guide pairs the evidence rating for the ingredient with our execution scores for the products, so the top pick is the one that earns it, not the one that paid for the slot. Every pick is independently scored and kept current.
Best Prenatal Vitamins
Top pick: Nature Made Prenatal Folic Acid + DHA, 90 Softgels - $0.20/day
10 products scored
Best Vitamin D3 Supplement
Top pick: Kirkland Signature Kirkland Signature Vitamin D3 50 mcg (2000 IU) - $0.02/day
10 products scored
Best Magnesium for Sleep
Top pick: Doctor's Best Doctor's Best High Absorption Magnesium Glycinate Lysinate - $0.20/day
15 products scored
Best Magnesium Glycinate
Top pick: Doctor's Best Doctor's Best High Absorption Magnesium Glycinate Lysinate - $0.20/day
15 products scored
Best Fish Oil Supplement
Top pick: Nordic Naturals Nordic Naturals Ultimate Omega 1280mg - $0.65/day
12 products scored
Best Creatine Supplement
Top pick: Naked Nutrition Naked Creatine - $0.18/day
10 products scored
Best Ashwagandha Supplement
Top pick: Nootropics Depot KSM-66 Ashwagandha Extract 300mg - $0.38/day
10 products scored
Best Multivitamin
Top pick: Kirkland Signature Daily Multi Vitamins & Minerals - $0.03/day
14 products scored
Best Probiotic Supplement
Top pick: NOW Foods Probiotic-10 25 Billion - $0.30/day
10 products scored
Best Collagen Supplements
Top pick: Naked Nutrition Naked Collagen - $0.70/day
13 products scored
Best Turmeric Curcumin Supplement
Top pick: Thorne Meriva SF (Soy-Free) Curcumin Phytosome - $0.67/day
11 products scored
Best Vitamin B12 Supplement
Top pick: Nature Made Nature Made Vitamin B12 1000 mcg - $0.06/day
8 products scored
Best Zinc Supplement
Top pick: Jarrow Formulas Zinc Balance 15 mg - $0.10/day
8 products scored
Best Melatonin Supplement
Top pick: Life Extension Melatonin 300 mcg (0.3mg) - $0.08/day
8 products scored
Best Whey Protein Isolate
Top pick: Optimum Nutrition Gold Standard 100% Whey - $1.30/day
9 products scored
Best CoQ10 Supplement
Top pick: Nature Made Nature Made CoQ10 200mg - $0.28/day
8 products scored
Best Iron Supplement
Top pick: Nature Made Nature Made Iron 65mg (Ferrous Sulfate) - $0.02/day
8 products scored
Best Cod Liver Oil Supplement
Top pick: Nordic Naturals Nordic Naturals Arctic Cod Liver Oil (Lemon) - $0.60/day
10 products scored
Best Multivitamin for Men
Top pick: Kirkland Signature Daily Multi Vitamins & Minerals - $0.03/day
14 products scored
Best Multivitamin for Women
Top pick: Kirkland Signature Daily Multi Vitamins & Minerals - $0.03/day
14 products scored
Best Multivitamin for Seniors
Top pick: Kirkland Signature Daily Multi Vitamins & Minerals - $0.03/day
14 products scored
Best Protein Powder for Women
Top pick: Optimum Nutrition Gold Standard 100% Whey - $1.30/day
9 products scored
Best Supplements for Athletes
Top pick: Naked Nutrition Naked Creatine - $0.18/day
10 products scored
Best Supplements for Vegans
Top pick: Nature Made Nature Made Vitamin B12 1000 mcg - $0.06/day
8 products scored
Best Supplements for Runners
Top pick: Nature Made Nature Made Iron 65mg (Ferrous Sulfate) - $0.02/day
8 products scored
Best Supplements for Bodybuilding
Top pick: Optimum Nutrition Gold Standard 100% Whey - $1.30/day
9 products scored
Best Supplements for Women Over 50
Top pick: Kirkland Signature Daily Multi Vitamins & Minerals - $0.03/day
14 products scored
Best Supplements for Men Over 50
Top pick: Nature Made Nature Made CoQ10 200mg - $0.28/day
8 products scored
Best Supplements for Teens
Top pick: Kirkland Signature Daily Multi Vitamins & Minerals - $0.03/day
14 products scored
Best Supplements for Pregnancy
Top pick: Nature Made Nature Made Iron 65mg (Ferrous Sulfate) - $0.02/day
8 products scored
Best Supplements for Breastfeeding
Top pick: Nordic Naturals Nordic Naturals Ultimate Omega 1280mg - $0.65/day
12 products scored
Best Supplements for the Elderly
Top pick: Kirkland Signature Kirkland Signature Vitamin D3 50 mcg (2000 IU) - $0.02/day
10 products scored
Best Supplements for Stress & Calm
Top pick: Nootropics Depot KSM-66 Ashwagandha Extract 300mg - $0.38/day
10 products scored
Best Supplements for Sleep
Top pick: Life Extension Melatonin 300 mcg (0.3mg) - $0.08/day
8 products scored
Best Supplements for Gut Health
Top pick: NOW Foods Probiotic-10 25 Billion - $0.30/day
10 products scored
Best Supplements for Joint Comfort & Mobility
Top pick: Thorne Meriva SF (Soy-Free) Curcumin Phytosome - $0.67/day
11 products scored
Best Supplements for Brain Health
Top pick: Nordic Naturals Nordic Naturals Ultimate Omega 1280mg - $0.65/day
12 products scored
Best Supplements for Heart Health
Top pick: Nature Made Nature Made CoQ10 200mg - $0.28/day
8 products scored
Best Supplements for Muscle Recovery
Top pick: Naked Nutrition Naked Creatine - $0.18/day
10 products scored
Best Supplements for Immune Support
Top pick: Jarrow Formulas Zinc Balance 15 mg - $0.10/day
8 products scored
Best Supplements for Hair Growth
Top pick: Naked Nutrition Naked Collagen - $0.70/day
13 products scored
Best Supplements for Skin Health
Top pick: Naked Nutrition Naked Collagen - $0.70/day
13 products scored
Best Supplements for Inflammation
Top pick: Thorne Meriva SF (Soy-Free) Curcumin Phytosome - $0.67/day
11 products scored
Best Supplements for Energy
Top pick: Nature Made Nature Made Vitamin B12 1000 mcg - $0.06/day
8 products scored
Best Supplements for Bone Health
Top pick: Kirkland Signature Kirkland Signature Vitamin D3 50 mcg (2000 IU) - $0.02/day
10 products scored
Best Supplements for Testosterone
Top pick: Nootropics Depot KSM-66 Ashwagandha Extract 300mg - $0.38/day
10 products scored
Best Supplements for Weight Loss
Top pick: NOW Foods Probiotic-10 25 Billion - $0.30/day
10 products scored
Best Magnesium for Stress & Calm
Top pick: Doctor's Best Doctor's Best High Absorption Magnesium Glycinate Lysinate - $0.20/day
15 products scored
Best Magnesium for Muscle Cramps
Top pick: Doctor's Best Doctor's Best High Absorption Magnesium Glycinate Lysinate - $0.20/day
15 products scored
Best Magnesium L-Threonate for Cognitive Support
Top pick: Sports Research Sports Research Magtein Magnesium L-Threonate - $1.00/day
10 products scored
Best Fish Oil for Heart Health
Top pick: Nordic Naturals Nordic Naturals Ultimate Omega 1280mg - $0.65/day
12 products scored
Best Probiotics for Digestive Comfort
Top pick: NOW Foods Probiotic-10 25 Billion - $0.30/day
10 products scored
Best Probiotic for Women
Top pick: NOW Foods Probiotic-10 25 Billion - $0.30/day
10 products scored
Best Low-Dose Melatonin
Top pick: Life Extension Melatonin 300 mcg (0.3mg) - $0.08/day
8 products scored
Best Turmeric for Joint Comfort
Top pick: Thorne Meriva SF (Soy-Free) Curcumin Phytosome - $0.67/day
11 products scored
Best Ashwagandha for Stress
Top pick: Nootropics Depot KSM-66 Ashwagandha Extract 300mg - $0.38/day
10 products scored
Best Collagen for Joints
Top pick: Naked Nutrition Naked Collagen - $0.70/day
13 products scored
Best DIM Supplements for Estrogen Metabolism Support
Top pick: Thorne Hormone Advantage (DIM + Pomegranate + Sulforaphane), 60 caps - $0.85/day
8 products scored
Best Vitex (Chasteberry) Supplements for Menstrual Cycle Comfort
Top pick: Nature's Way Femaprin Vitex Extract with Vitamin B6, 60 Capsules - $0.30/day
7 products scored
Best Myo-Inositol for Cycle Regularity and Ovulatory Support
Top pick: Theralogix Ovasitol Inositol Powder, 90-Day Supply (Myo + D-Chiro 40:1) - $0.83/day
7 products scored
Best Enteric-Coated Peppermint Oil for Digestive Comfort
Top pick: Nature's Way Nature's Way Pepogest Enteric-Coated Peppermint Oil, 60 Softgels - $0.70/day
8 products scored
Best Saffron Supplement for Mood Support
Top pick: Sports Research Pure Saffron 30mg with affron, 60 Veggie Softgels - $0.50/day
8 products scored
Best SAMe Supplement for Mood and Joint Comfort
Top pick: Nature Made SAM-e Complete 400 mg, 60 Enteric Coated Tablets - $0.80/day
8 products scored
Best Cranberry Supplement for Urinary Tract Health
Top pick: Theralogix TheraCran One Cranberry, 36mg PAC, 90 Capsules (90-Day Supply) - $1.06/day
9 products scored
Best Valerian Root Supplement for Sleep Support
Top pick: Bluebonnet Nutrition Standardized Valerian Root Extract 250mg - $0.40/day
9 products scored
Best Ginger Supplement for Digestive Comfort
Top pick: NOW Foods Ginger Root Extract 250mg (5% gingerols), 90 ct - $0.13/day
8 products scored
Best Greens Powder
Top pick: NAKED Nutrition Naked Greens (35 Servings) - $0.91/day
13 products scored
Best Protein Powder
Top pick: NOW Sports Sports Whey Protein Concentrate, Unflavored - $1.12/day
10 products scored
Best Electrolyte Powder
Top pick: Skratch Labs Sport Hydration Drink Mix - Variety Pack - $1.80/day
13 products scored
Best Pre-Workout
Top pick: Transparent Labs BULK Pre-Workout - $1.67/day
10 products scored
Best Meal Replacement Shake
Top pick: Huel Huel Black Edition (Chocolate, 17 Servings) - $3.18/day
11 products scored
Best Budget Greens Powder
Top pick: NAKED Nutrition Naked Greens (35 Servings) - $0.91/day
13 products scored
Best Greens Powder Without Proprietary Blends
Top pick: NAKED Nutrition Naked Greens (35 Servings) - $0.91/day
13 products scored
Best Fiber Supplements
Top pick: Healthy Origins Healthy Fiber (Sunfiber PHGG) - $1.06/day
8 products scored
Best Colostrum Supplements
Top pick: Nutricost Colostrum Powder - $0.53/day
8 products scored
Best Urolithin A Supplements
Top pick: aeternum Urolithin A 500mg - $0.72/day
6 products scored
Best Benfotiamine Supplements
Top pick: Double Wood Benfotiamine - $0.32/day
6 products scored
Best TUDCA Supplements
Top pick: Double Wood TUDCA Bile Salts 500mg - $0.83/day
6 products scored
Best Berberine Supplements
Top pick: Pure Encapsulations Pure Encapsulations Berberine 500mg - $2.58/day
5 products scored
Best Vitamin A Supplements
Top pick: Nature Made Nature Made Vitamin A 2,400 mcg (8,000 IU) - $0.05/day
10 products scored
Best NAC Supplements
Top pick: Thorne NAC (N-Acetyl Cysteine) 500mg, 90 Capsules - $0.73/day
10 products scored
Best Psyllium Husk Supplements
Top pick: Yerba Prima Psyllium Whole Husks - $0.26/day
10 products scored
Best Glycine Supplements
Top pick: NOW Foods Glycine Powder (pure) - $0.12/day
8 products scored
Best Krill Oil Supplements
Top pick: Sports Research Krill Oil Supplement with EPA & DHA - 1000mg - $0.52/day
10 products scored
Best DHEA Supplements
Top pick: Life Extension DHEA 25 mg - $0.11/day
10 products scored
Best Vitamin E Supplements
Top pick: Thorne Thorne Vitamin E (with Mixed Tocopherols) 200 IU - $0.23/day
8 products scored
Best Taurine Supplements
Top pick: BulkSupplements Taurine Powder - $0.06/day
10 products scored
Best Iodine Supplements
Top pick: Pure Encapsulations Pure Encapsulations Iodine (Potassium Iodide) 225 mcg - $0.17/day
9 products scored
Best Folate Supplements
Top pick: Nature Made Nature Made Folic Acid 400mcg - $0.02/day
5 products scored
Best BCAA Supplements
Top pick: BulkSupplements BulkSupplements BCAA 2:1:1 Powder - $0.12/day
10 products scored
Best Vitamin K2 Supplements
Top pick: NOW Foods NOW Foods Vitamin K-2 100mcg - $0.17/day
6 products scored
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. Dietary supplements are not intended to diagnose, treat, cure, or prevent any disease. Always consult with a qualified healthcare professional before starting any supplement regimen.