Top Brands for Ferrous Sulfate Supplements: A Comprehensive Guide

Finding the right brand of ferrous sulfate can play a crucial role in effectively addressing iron deficiency. With numerous options available in the market, it can be overwhelming to determine which brands offer the highest quality and efficacy. Among the best, you'll find companies that prioritize purity and absorption, ensuring that their products meet high standards of safety and effectiveness. Whether you're looking for supplements to combat anemia or simply boost your iron levels, the brands listed below have garnered positive reviews and trust from consumers worldwide.

Illustration of ferrous sulfate

Best brands of ferrous sulfate in 2025

Feosol

Feosol is a trusted leader and innovator in iron supplements, with over 70 years of experience in providing high-quality products. Their Feosol Original supplement contains 65 mg of elemental iron, equivalent to 325 mg of ferrous sulfate, providing 361% of the Daily Value. This form of iron, ferrous sulfate, is widely recommended by doctors and is known for its effectiveness in supporting red blood cell production and energy. Feosol's products are made in the USA and are gluten-free, with no artificial flavors. The brand is recommended by pharmacists and has been a staple in treating iron deficiency for generations.

Nature's Bounty

Nature's Bounty is a renowned brand for producing high-quality ferrous sulfate supplements, particularly their Iron Ferrous Sulfate Tablets, which provide 65 mg of elemental iron per tablet, equivalent to 361% of the daily value. These tablets support red blood cell production, cellular energy utilization, and are crucial for women's nutritional health. Since 1971, Nature's Bounty has been committed to exceptional quality and innovative solutions, ensuring rigorous testing every month to guarantee potent and efficacious ingredients. Their products are free from artificial flavors, sweeteners, sugar, starch, milk, lactose, soy, gluten, wheat, yeast, and fish, making them suitable for a wide range of dietary needs. The brand's dedication to science and quality has made it a trusted name in the health supplement industry.

Solgar

Solgar is renowned for its high-quality supplements, including its Gentle Iron product, which contains ferrous bisglycinate, a highly absorbable and gentle form of iron. This formulation is ideal for individuals with sensitive stomachs and those on restricted diets, such as vegetarians and vegans. Each capsule provides 20 mg of iron, equalling 143% of the Nutrient Reference Values, supporting normal cognitive function, energy-yielding metabolism, and immune system health. Solgar's commitment to excellence is evident in their 'Gold Standard' for product quality, with 98% of consumers recommending the brand according to a 2017 global survey. The company has been innovating since 1947, ensuring their products meet stringent standards.

NOW Foods

NOW Foods is a renowned producer of ferrous sulfate, known for its high-quality supplements that address iron deficiency. The company's ferrous sulfate products are widely used in the health and wellness sector, particularly for treating anemia, with a significant market presence driven by a growing demand for iron supplements. In the global ferrous sulfate market, which is anticipated to reach USD 1,069.41 million by 2030 with a CAGR of 3.09%, NOW Foods stands out for its reliable and effective formulations. The company's products are favored for their ease of absorption and efficacy, contributing to the overall growth of the market. As the Asia Pacific region leads the market with a CAGR of 3.65%, NOW Foods continues to expand its reach and customer base.

Thorne Research

Thorne Research is renowned for its high-quality iron supplements, particularly its Iron Bisglycinate, which offers optimal absorption and minimizes gastrointestinal side effects commonly associated with conventional forms like ferrous sulfate. This product provides 25 mg of elemental iron per capsule, reacted with glycine for enhanced absorption, and is NSF Certified for Sport, ensuring its safety and efficacy for athletes and individuals with iron deficiency. Thorne's rigorous testing and manufacturing standards, including four rounds of testing and compliance with cGMP regulations, guarantee the purity and potency of their products. The company's commitment to quality is evident in its exemplary record of compliance with FDA inspections and its certification by Australia's Therapeutic Goods Administration (TGA). Thorne's products are trusted by over 100 professional and U.S. National teams and organizations.

Sundown Naturals

Sundown Nutrition, although not specifically known for ferrous sulfate production, is a reputable brand in the health supplement industry, offering a range of products that support overall health, including iron supplements. However, for ferrous sulfate, other manufacturers are more directly involved, such as those in the water treatment and steel industries. Ferrous sulfate is primarily produced as a byproduct of steel pickling, relying on iron oxides and sulfuric acid, with domestic U.S. production reported at approximately 18 million kilograms in 2015. Sundown Nutrition focuses on clean nutrition, avoiding genetically modified ingredients, gluten, and artificial flavors, which aligns with consumer preferences for health supplements. Their products, such as the Essential Iron 65 mg Tablets, support red blood cell production and are free from common allergens.

Nutricost

Nutricost is a reputable brand known for its high-quality ferrous sulfate supplements, each serving providing 65mg of iron as ferrous sulfate, making it an excellent choice for addressing iron deficiencies. The product is available in a convenient tablet form, with 240 tablets per package, ensuring a consistent supply. Nutricost's ferrous sulfate is often recommended for its purity and effectiveness, making it a popular option among health enthusiasts. The brand's commitment to quality is reflected in its strict manufacturing standards and adherence to dietary supplement regulations. With its affordable pricing and reliable sourcing, Nutricost stands out as a trusted producer of ferrous sulfate supplements.

Nature Made

Nature Made is renowned as one of the best producers of ferrous sulfate supplements, particularly with their Iron 65 mg Tablets, which provide 65 mg of iron (equivalent to 325 mg of ferrous sulfate) per serving. This product is vital for red blood cell formation and supports healthy cognitive function, making it essential for individuals with iron deficiency, especially premenopausal women where 1 in 10 are deficient. Nature Made is the #1 Pharmacist Recommended Vitamin and Supplement Brand, reflecting its high quality and trustworthiness. The tablets are gluten-free, contain no artificial flavors or synthetic dyes, and are sourced from high-quality ingredients. With a 180-count bottle, this supplement offers a 180-day supply, ensuring consistent support for those needing iron supplementation.

Pure Encapsulations

Pure Encapsulations is renowned for its high-quality supplements, including its Iron Liquid formula, which features SunActive(r) Fe, a micronized water-soluble form of iron with bioavailability similar to ferrous sulfate. This formulation has been proven effective in a 16-week randomized, double-blind, placebo-controlled study involving 122 women, where it promoted healthy iron status, including hemoglobin, ferritin, and transferrin saturation. The brand's commitment to using hypoallergenic, vegetarian ingredients and rigorous testing protocols ensures product purity and potency. Pure Encapsulations products are free from unnecessary additives and common allergens, and their manufacturing processes are inspected twice annually by the NSF to comply with FDA GMPs. With over 30 years of research and innovation, Pure Encapsulations stands out as a trusted producer of premium supplements.

Mason Natural

Mason Natural is a reputable brand known for producing high-quality ferrous sulfate supplements, particularly their High Potency Slow Release Iron tablets, each containing 50 mg of iron. Recommended by health professionals for iron deficiency, these supplements are designed to provide essential mineral supplementation. With over 50 years of experience, Mason Natural adheres to strict quality procedures to comply with industry and government standards. Their products are formulated to support a healthy and active lifestyle, making them a trusted choice for many consumers. The tablets are stored at USP Controlled Room Temperature to maintain their efficacy.