Molybdenum
The upper limit for molybdenum is 2,000 mcg/day. It is found in many multivitamins and may interfere with copper metabolism at high doses. Learn safe dosing and what signs of excess look like.
For adults, the tolerable upper intake level for molybdenum is 2,000 mcg/day (2 mg/day) from food and supplements combined (FDA Dietary Reference Intakes). Molybdenum is a cofactor for enzymes involved in sulfur amino acid metabolism; it appears in many multivitamins. High-dose molybdenum is uncommon in casual stacks, but duplication across multis and “detox” mineral blends still deserves totals.
| Topic | Adult UL | Typical intake | Notes |
|---|---|---|---|
| UL | 2,000 mcg/day | Rarely exceeded | Still audit duplicates |
| Multivitamins | Small amounts | Common inclusion | Stack with trace blends |
| Copper metabolism | Biochemistry link | Not a DIY fix | Specialist contexts |
| Deficiency | Rare clinically | Medical diagnosis | Do not self-assign |
Source: FDA Dietary Reference Intakes; NIH ODS (molybdenum).
Do not chase obscure minerals. More trace minerals do not equal better health by default.
Read mcg carefully. Microgram doses look large numerically but differ from mg minerals.
Two multis still a bad idea. Double multivitamins multiply trace minerals too.
Medical diets matter. Parenteral nutrition and rare disorders are outside this retail guide.
Multivitamins and broad-spectrum mineral products may each list molybdenum.
NutriAudit helps when users combine a daily multi with athlete mineral complexes.
Molybdenum deficiency is uncommon in typical diets; supplements usually appear as part of broad trace mixes. Risk emerges when multiple mixes stack or when patients with metabolic disorders use specialty amino acid protocols.
Gout-like symptoms and uric acid shifts are theoretical concerns at extreme intakes—another reason to avoid duplicating trace bottles without purpose.
Certain inborn errors of metabolism involve molybdenum cofactor pathways; those patients are not served by casual trace mineral stacking. Specialist dietitians should direct micronutrient plans.
If you have no documented indication, consider dropping redundant trace-only products after auditing overlap.
Purine metabolism is complex; new joint pain should be evaluated medically—not blamed on one mineral.
Use obstetric guidance for any multivitamin or mineral changes.
Avoid “detox” claims as a reason to stack multiple mineral products unsafely.
High-dose interactions are specialized; involve clinicians for unusual stacks.
Use NutriAudit to audit your full stack for hidden overlaps.
Audit your supplement stackDisclaimer: NutriAudit is a decision-support tool designed to help you review your supplement stack for potential duplicate, conflicting, or excessive ingredients. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making changes to your supplement routine, especially if you are pregnant, nursing, taking medications, or have a medical condition.
Based on reference standards from FDA, EFSA, TGA, and MHLW.
Last updated: 2026-04-07 · Data sourced from FDA Dietary Reference Intakes, EFSA Scientific Opinions, and NIH Office of Dietary Supplements where applicable.