Double Strength Iron
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
Certifications & Testing
Other Ingredients
Rice Flour, Hypromellose, Stearic Acid, Silicon Dioxide
Recommended Use
Suggested Usage: Take 1 capsule daily with a meal.
Warnings
Warning: Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6. Keep this product out of the reach of children. In case of accidental overdose, call a doctor or poison control center immediately. Caution: For adults only. Keep out of reach of children. Do not exceed recommended dosage unless directed by a physician. Consult physician if pregnant/
Frequently Asked Questions
What is NOW Foods Double Strength Iron's Formulate score?
NOW Foods Double Strength Iron scores 81 out of 100 (grade A-) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is NOW Foods Double Strength Iron worth it?
NOW Foods Double Strength Iron scores 81/100 (grade A-). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in NOW Foods Double Strength Iron?
Each serving contains Iron (36 mg). Serving size: 1 Veg Capsule(s). 90 servings per container.
How do I take double strength iron?
Suggested Usage: Take 1 capsule daily with a meal.
Who makes Double Strength Iron?
Double Strength Iron is made by NOW Foods. See Formulate's full grade and product lineup for NOW Foods on its brand page.
Is NOW Foods Double Strength Iron third-party tested?
NOW Foods lists the following certifications and testing for this product: Vegan, Vegetarian, Gluten-Free, Dairy-Free.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.