Less serious side effects may include:

• constipation;

• upset stomach;

• black or dark-colored stools; or

• temporary staining of the teeth.

This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect.

What other drugs will affect ferrous sulfate?

The following drugs can interact with ferrous sulfate. Tell your doctor if you use any of these:

• acetohydroxamic acid (Lithostat);

• chloramphenicol;

• cimetidine (Tagamet);

• etidronate (Didronel);

• dimercaprol (an injection used to treat poisoning by arsenic, lead, or mercury);

• levodopa (Larodopa, Dopar, Sinemet);

• methyldopa (Aldomet); or

• penicillamine (Cuprimine).

This list is not complete and there may be other drugs that can interact with ferrous sulfate. Tell your doctor about all your prescription and over-the-counter medications, vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start a new medication without telling your doctor.

Where can I get more information?

Your pharmacist can provide more information about ferrous sulfate.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.