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2Corrective

Zinc

Also sold as Picolinate, gluconate, zinc

Short courses for illness or a confirmed low level. Long high doses deplete copper.

2TrustedSupp Tier System™ · Tier 2Take until levels correct

How long to take it

Days to weeks for illness; a few months for confirmed deficiency. Not a permanent addition.

Who it's actually for

People with poor appetite, recurrent infections, plant-based diets, or documented low levels.

Safe upper limit

Reported
40 mg per day
Sustained high intake induces copper deficiency, which can cause anaemia and nerve damage that is slow to reverse.
Zinc — Health Professional Fact SheetNot re-checked
Standard figure, high confidence, not re-verified against the live fact sheet this session.

Interactions to know about

  • Antibiotics — Especially tetracyclines and quinolones
  • Diuretics (water tablets) — Furosemide, bendroflumethiazide, spironolactone
  • Penicillamine — Chelating agent

Other supplements:

Run your full list through the interaction check.

Practical notes

  • Take with food — on an empty stomach it commonly causes nausea.
  • If you take more than 25 mg daily for months, discuss copper with your doctor.
  • Nasal zinc products have caused permanent loss of smell — avoid them.