Medical Editor: John P. Cunha, DO, FACOEP Last updated on RxList: 8/31/2022
Drug Description

What is Niferex-150 and how is it used?

Niferex-150 Capsules (ferrous asparto glycinate and polysaccharide iron) Complex is a dietary supplement used to treat and prevent vitamin C and iron deficiencies. Niferex-150 is available in generic form.

What are side effects of Niferex-150?

Common side effects of Niferex-150 include:

  • stomach upset,
  • nausea,
  • vomiting,
  • diarrhea,
  • constipation,
  • staining of the teeth, and
  • black-colored stools


Supplement Facts
Serving Size 1 Capsule

Amount Per Serving % Daily Value
Iron (elemental)
(33% as Sumalate™† and 67% as polysaccharide iron complex)
150 mg 833%
Vitamin C from Ester-C ®
(81% and 1% of Ester-C ® as ascorbic acid and threonic acid)
50 mg 56%
Succinic acid 50 mg *
* Daily Value not established

Other ingredients: Malic acid, magnesium stearate, silicon dioxide, gelatin, titanium dioxide, D&C Yellow No. 10, D&C Red No. 28, FD&C Red No. 40, FD&C Blue No.1, and pharmaceutical glaze.

† Sumalate" (ferrous asparto glycinate) is a trademark of Albion International, Inc., Clearfield, Utah. U.S. Patent Pending.

‡ Ester-C® is a patented pharmaceutical grade material consisting of calcium ascorbate and calcium threonate. Ester-C® is a licensed trademark of Zila Nutraceuticals, Inc.

Indications & Dosage


No information provided.


Directions: Adults take 1 or 2 capsules daily, or as directed by a physician.


NDC 64011-163-26 - 90 Capsules

Store at controlled room temperature 15°-30° C (59°-86°F).

Mktd. by Ther-Rx Corp., St. Louis, MO 63044. 05/06


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Side Effects & Drug Interactions


No information provided.


No information provided.

Warnings & Precautions


Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6. Keep this product out of reach of children. In case of accidental overdose, call a doctor or poison control center immediately.

Iron is best absorbed on an empty stomach; however, occasional gastrointestional discomfort (such as nausea) may be minimized by taking with meals. Iron-containing medication may occasionally cause black stools, constipation, or diarrhea, which is usually transient and self-limiting.

If pregnant or breast-feeding, ask a health professional before use.

This package is tamper evident. Do not use if imprinted seal under cap is missing or damaged.


No information provided.

Overdose & Contraindications


No information provided.


No information provided.

Clinical Pharmacology


No information provided.

Medication Guide


No information provided. Please refer to the WARNINGS section.

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