Kosher iron supplements: tablets, liquids and chewables

By the KosherVitamins.com team · Updated November 13, 2026

Iron is one of the most common supplements we sell, for adults, during pregnancy and for children. Here is what to know about the different kinds of iron and the kosher questions for each.

Who takes iron

According to the NIH Office of Dietary Supplements, groups that may need more iron include teen girls and women with heavy periods, pregnant women, infants (especially premature or low-birth-weight babies), frequent blood donors, and people with certain medical conditions. Ask your doctor before starting iron, since the right amount depends on your iron levels.

Forms of iron

The NIH says supplements often contain ferrous sulfate, ferrous gluconate, ferric citrate or ferric sulfate. You will also see ferrous fumarate, carbonyl iron and iron bisglycinate (sometimes called chelated iron, and sold under names like Ferrochel). Products made with bisglycinate are often labeled “gentle”. The amount of elemental iron on the label is what matters for the dose.

Tablets and capsules

Swallowed tablets are the simplest kashrus case, but the supplement still needs a reliable symbol. Capsules can be gelatin or vegetarian; look for vegetable capsules or a symbol that covers the capsule. See our capsules guide.

Liquids, chewables and gummies

Liquid iron, chewables and gummies are tasted, so the kosher agencies treat them more like food. The cRc notes that chewables and liquids should be certified, and that glycerin and flavors are common concerns. Gummies may contain gelatin. Iron-rich waters such as Spatone are another liquid option.

Iron for kids

Children’s iron comes as liquids, chewables and gummies. Choose a product made for children and follow the label or your pediatrician. See our kids’ vitamins guide.

Safety

• The NIH warns that accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6. Keep iron, and multivitamins with iron, locked away from children.
• The NIH sets the upper limit at 45 mg a day for ages 14 and up, and 40 mg for younger children, from all sources, unless a doctor prescribes more.
• High doses, especially on an empty stomach, can upset the stomach or cause constipation. Calcium can reduce iron absorption, so the NIH suggests taking them at different times.
• Iron can interact with some medicines, such as levothyroxine. Ask your doctor or pharmacist.

Checklist

• A reliable kosher symbol on the bottle.
• Capsules: vegetarian, or a symbol that covers gelatin.
• Liquids, chewables and gummies: certified, since they are tasted.
• Kids: a children’s product, kept out of reach.
• Passover: needs separate Passover certification.

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Frequently asked questions

More guides

• Kosher certification symbols on vitamins and supplements
• How to tell if a vitamin or supplement is kosher
• Kosher capsules and gelatin: softgels, veggie caps and fish gelatin
• Kosher for Passover vitamins and supplements
• Kosher fish oil and omega-3
• Kosher probiotics: dairy vs. pareve
• Kosher vitamin D: D3, D2 and vegan options
• Is glucosamine kosher? Shellfish vs. vegetarian glucosamine
• Is collagen kosher? Bovine, fish and vegan options
• How to choose a kosher multivitamin
• Kosher prenatal vitamins: what to look for
• Kosher vitamins for kids: gummies, chewables and liquids
• Cholov Yisroel vitamins and supplements
• Is creatine kosher? Powder, capsules and gummies
• Kosher protein powder: whey, casein and plant protein
• Kosher toothpaste and mouthwash
• Kosher protein bars: dairy, pareve and Cholov Yisroel
• Kosher cough drops and throat lozenges: is Ricola kosher?

Sources

• NIH Office of Dietary Supplements: iron fact sheet for consumers
• cRc: over-the-counter medicine
• OU Kosher: kosher nutraceuticals and supplements, principles and process
• STAR-K: glycerin and gelatin
• OK Kosher: a closer look at gelatin