DOSERANKEVIDENCE-BASED SUPPLEMENTS© 2026 DoseRank · Evidence-based supplements
Methodology·Outcomes·Categories·Blog
Support·Feedback
DOSERANKEVIDENCE-BASED SUPPLEMENTSFull analysis

The short answer · Acne severity

Take zinc picolinate for acne severity. This is the one to buy.

NOW Foods, Zinc Picolinate, 50 mg, 120 Veg Capsules
1

NOW Foods, Zinc Picolinate, 50 mg, 120 Veg Capsules

4.8· 52,662 ratings· $0.08/serving

DoseRank score87

Zinc Picolinate 50 mg — inside the studied 30-50 mg window

Of 4,878 products scored for Acne severity, NOW Foods, Zinc Picolinate, 50 mg, 120 Veg Capsules ranks #1 with a DoseRank score of 87. Zinc Picolinate has moderate human evidence for this outcome.

View on iHerb— $0.08/sv60-sec quiz instead
Cheaper alternative$0.02 per serving21st Century, Zinc Citrate, 50 mg, 360 Tablets

Retailer links may be affiliate links. Rankings and placement are never paid.

The form“Why Zinc Picolinate — not Potassium Iodide or Zinc Bisglycinate?”Evidence Moderate evidence

Zinc Picolinate has moderate human evidence for this outcome.

  • Zinc PicolinateThe pick

    Moderate evidence · 50 mg

    Zinc bound to picolinic acid, a ligand the body makes itself; frequently cited for high absorption and favored for repletion.

  • Potassium Iodide

    Moderate evidence · 150 mcg

    Inorganic iodine salt used to fortify salt and supply the thyroid; rapidly absorbed, making it a reliable source for preventing iodine deficiency.

  • Zinc Bisglycinate

    Moderate evidence · 30 mg

    Chelated zinc bound to two glycine molecules; highly bioavailable and unusually gentle on the stomach versus inorganic zinc salts.

Buy the #1 pick
The dose“Is the dose actually effective?”Dose fit 90

Zinc Picolinate at 50 mg lands inside the studied 30-50 mg window.

Zinc Picolinate

Studied window 30-50 mg · this pick 50 mg

The ranking“Why should I trust this pick?”Trust 95

Strong trust signals — consistently high marks from verified buyer ratings. Each product gets a DoseRank score blending clinical strength, evidence, dose fit, trust and value. Retailer links may be affiliate links — the scoring model decides placement, never payment from a brand.

  • 4,878 products scored
  • Never paid placement
  • Evidence level: Moderate · 78
  • 438 brands
  • 31 ingredients
See the full analysis — every score, every productHow the ranking works
The price“Can I do better than $0.08 a serving?”Value 86

$0.08 per serving — low price tier for this outcome. The cheapest ranked pick here is $0.04 per serving.

  • 7
    NOW Foods, Zinc, 50 mg, 250 TabletsScore 85 · $0.04/serving
    iHerb
  • 3
    Nutricost, Zinc Picolinate, 50 mg, 240 CapsulesScore 86 · $0.07/serving
    iHerb

Why not the absolute cheapest? The DoseRank score also weighs clinical strength, evidence, dose fit and trust — the very cheapest listings rarely hold up everywhere else.

Ready?

The #1 pick is $0.08 a serving.

NOW Foods, Zinc Picolinate, 50 mg, 120 Veg Capsules — in stock at a tracked retailer.

View on iHerb
Want it personal instead?

A saved, shareable breakdown: your matched products, dose math, and interaction flags to discuss with a clinician.

Or take the 60-sec quiz →

Questions

Frequently asked

NOW Foods, Zinc Picolinate, 50 mg, 120 Veg Capsules ranks #1 for Acne severity with a DoseRank score of 87. The score blends clinical strength, evidence, dose fit, trust signals and value across 4,878 products scored for this outcome.

Zinc Picolinate has moderate human evidence for this outcome.

Zinc Picolinate at 50 mg lands inside the studied 30-50 mg window. DoseRank scores this product's dose fit at 90 out of 100.

NOW Foods, Zinc Picolinate, 50 mg, 120 Veg Capsules works out at $0.08 per serving. $0.08 per serving — low price tier for this outcome. The cheapest ranked pick here is $0.04 per serving.

No. Retailer links may be affiliate links, but rankings and placement are never paid. Every product is scored by the same public model, and the ranking is recomputed from the underlying product data rather than edited by hand.

Keep exploring

Other outcomes

  • Atopic dermatitis symptomsItching, rash, and inflammation related to eczema.
  • Eczema severityOverall clinical burden of eczema.
  • Psoriasis severityExtent or severity of psoriatic skin disease.

Use rankings as research support

DoseRank rankings are informational and not medical advice. If you are pregnant, breastfeeding, using medications, or managing a health condition, ask a qualified clinician whether a supplement fits your situation. Stop use and report concerning adverse events to a clinician, the product maker, or the retailer.

Disclosure

Retailer links may be affiliate links. Rankings and placement are not paid placement.

NOW Foods, Zinc Picolinate, 50 mg, 120 Veg Capsules

$0.08/serving · ★ 4.8 · In stock

60-sec quizView on iHerb