Top 5 — Ranked by Evidence
Very Strong
Vitamin D
Bone Health and Fracture Prevention
600–800 IU/day (RDA); optimal blood levels (50–80 ng/mL) typically require 2,000
Very Strong
Zinc
Immune System Support
8–11 mg/day (RDA); therapeutic: 25–40 mg/day elemental zinc; upper limit 40 mg/d
Strong
Acetyl-L-Carnitine (ALCAR)
Neuropathy pain relief and nerve regeneration
500–2,000 mg/day in divided doses; neuropathy: 1,000 mg three times daily (3,000
Strong
Ashwagandha
Testosterone and Muscle
300–600 mg/day standardized extract (withanolides ≥2.5–5%)
Strong
KSM-66®
Stress and Anxiety Reduction
300–600 mg/day KSM-66® root extract (5% withanolides); 300 mg twice daily or 600
All Testosterone Ingredients (17)
Very Strong
Vitamin D
Bone Health and Fracture Prevention
600–800 IU/day (RDA); optimal blood levels (50–80 ng/mL) typically require 2,000
Very Strong
Zinc
Immune System Support
8–11 mg/day (RDA); therapeutic: 25–40 mg/day elemental zinc; upper limit 40 mg/d
Strong
Acetyl-L-Carnitine (ALCAR)
Neuropathy pain relief and nerve regeneration
500–2,000 mg/day in divided doses; neuropathy: 1,000 mg three times daily (3,000
Strong
Ashwagandha
Testosterone and Muscle
300–600 mg/day standardized extract (withanolides ≥2.5–5%)
Strong
KSM-66®
Stress and Anxiety Reduction
300–600 mg/day KSM-66® root extract (5% withanolides); 300 mg twice daily or 600
Strong
L-Carnitine (Carnipure®)
Fat metabolism and body composition
1–3 g/day L-carnitine tartrate; 500 mg–2 g/day acetyl-L-carnitine; best absorbed
Strong
RipFACTOR® (Botanical Muscle Accelerator)
Strength gains within 14 days — clinically proven
Performance dose: 325 mg/day (significant strength and endurance benefits); Ultr
Strong
Shoden® (35% Withanolide Glycoside Ashwagandha)
59% anxiety reduction and 66% cortisol reduction at low dose
60 mg/day (low dose, clinically effective) to 120 mg/day (full dose); dramatical
Strong
TestFACTOR® (Testosterone + Sexual Wellness)
Total and free testosterone increase across 4 RCTs
325 mg/day (performance dose — significant testosterone and sexual function bene
Strong
Tongkat Ali (LJ100®)
Free testosterone elevation and SHBG reduction
200–400 mg/day LJ100® (100:1 extract); most clinical trials use 200 mg/day; effe
Moderate
Boron
Bone health and density
3–10 mg/day elemental boron
Moderate
DHEA
Improved Sexual Function
25–100 mg/day; start at 25 mg and adjust based on blood DHEA-S levels; post-meno
Moderate
Ecdysterone / Turkesterone (Ecdysteroid Anabolics)
Lean muscle mass increase without hormonal side effects
Ecdysterone: 500–1,000 mg/day (12-week RCTs); Turkesterone: 500 mg/day; both: ta
Moderate
Fenugreek
Testosterone support
500–600 mg/day standardized extract; 5–30 g/day whole seed for glucose effects
Moderate
Shilajit / Fulvic Acid (PrimaVie®)
Testosterone and male reproductive health
250–500 mg/day purified shilajit or PrimaVie®; testosterone studies use 250 mg t
Limited
Maca
Improved Sexual Function and Libido
1.5–3 g/day dried root powder; gelatinized maca preferred for digestion; 8–12 we
Limited
Testncrease® (Testosterone Support Blend)
Healthy testosterone level support
Per Testncrease® product specifications; typically 2 capsules/day with meals; cl