Molybdenum

Mechanism of Action

Molybdenum is the essential cofactor for three human enzymes: sulfite oxidase (converts toxic sulfite to sulfate — critical for sulfur amino acid metabolism), xanthine oxidase (purine catabolism to uric acid), and aldehyde oxidase (aldehyde detoxification, drug metabolism). The molybdenum cofactor (Moco) requires molybdopterin as a carrier. Sulfite oxidase is the most clinically significant — sulfite accumulation is neurotoxic. Molybdenum also plays a role in the metabolism of sulfur-containing amino acids and may support phase I/II detoxification pathways.

Dosing Protocol

Notes

Niche but important for specific populations: sulfite-sensitive individuals (headaches from wine, dried fruit preservatives) and those on anti-Candida protocols (Candida produces acetaldehyde, which aldehyde oxidase detoxifies). Deficiency is rare in developed countries but can occur with TPN, severe malabsorption, or very restricted diets. The copper interaction is only relevant at high doses (>500 mcg). Generally best obtained as part of a comprehensive multimineral formula.

Stacking

• B-Complex
• NAC
• Copper (molybdenum can reduce copper)

Interactions

• Copper [MEDIUM] — High molybdenum (>500 mcg) can induce copper deficiency by forming insoluble copper-thiomolybdate complexes

Contraindications

• Gout (xanthine oxidase is the uric acid-producing enzyme — molybdenum supports this enzyme)
• Copper deficiency

Side Effects

• Generally very well tolerated
• Gout flares at high doses (increased uric acid production)
• Copper depletion at very high doses
• Joint pain (rare)

Key Papers

• 10.1007/978-94-009-0663-7_7
• 10.1093/ajcn/79.5.745
• 10.1016/j.bbagen.2014.11.020

Source Quality

Molybdenum glycinate or sodium molybdate. Typically obtained via multimineral formulas. Standalone supplementation most useful for sulfite sensitivity or Candida protocols (aldehyde detoxification). Brands: NOW Molybdenum, Thorne (in multimineral formulas).

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