Erythromycin and Sulfisoxazole (patient information)

# Why this medication is prescribed
The combination of erythromycin and sulfisoxazole (a sulfa drug) is used to treat certain ear infections caused by bacteria. It usually is used in children.
This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.

# How this medication should be used
Erythromycin and sulfisoxazole comes as a liquid to take by mouth. It usually is taken every 6 hours (four times a day) for 10 days. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take erythromycin and sulfisoxazole exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
Shake the liquid well before each use to mix the medication evenly.
Drink a full glass of water after each dose.
Continue to take erythromycin and sulfisoxazole even if you feel well. Do not stop taking erythromycin and sulfisoxazole without talking to your doctor.

# Special precauttions
Before taking erythromycin and sulfisoxazole:
- tell your doctor and pharmacist if you are allergic to erythromycin and sulfisoxazole, azithromycin (Zithromax), clarithromycin (Biaxin), dirithromycin (Dynabac), medication for diabetes, diuretics ('water pills'), or any other drugs.
- tell your doctor and pharmacist what prescription and nonprescription medications you are taking, especially other antibiotics, anticoagulants ('blood thinners') such as warfarin (Coumadin), astemizole (Hismanal), carbamazepine (Tegretol), clozapine (clozaril), cyclosporine (Neoral, Sandimmune), digoxin (Lanoxin), disopyramide (Norpace), ergotamine, felodipine (Plendil), lovastatin (Mevacor), oral contraceptives, phenytoin (Dilantin), terfenadine (Seldane), theophylline (Theo-Dur), triazolam (Halcion), and vitamins.
- tell your doctor if you have or have ever had kidney or liver disease, allergies, anemia, asthma, glucose-6-phosphate dehydrogenase (G-6-PD) deficiency, yellowing of the skin or eyes, colitis, or stomach problems.
- tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking erythromycin and sulfisoxazole, call your doctor.
- if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking erythromycin and sulfisoxazole.

# Special dietary instructions
Do not take this medication with, or just after, fruit juices, carbonated drinks, or tea. It can be taken with or between meals.

# What to do if you forget a dose
Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.

# Side effects

## Minor side effects
Erythromycin and sulfisoxazole may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
- upset stomach
- diarrhea
- vomiting
- stomach cramps
- mild skin rash

## Severe side effects
If you experience any of the following symptoms, call your doctor immediately:
- severe skin rash
- itching
- hives
- difficulty breathing or swallowing
- wheezing
- stomach pain
- yellowing of the skin or eyes
- dark urine
- pale stools
- unusual tiredness
- sore throat
- fever
- joint pain
- blood in urine
- unusual bleeding or bruising
- dark, tarry stools
If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online  or by phone .

# Storage conditions needed for this medication
Keep this medication in the container it came in, tightly closed, and out of reach of children. Keep it in the refrigerator, and throw away any unused medication after 14 days. Do not freeze. Talk to your pharmacist about the proper disposal of your medication.

# In case of emergency/overdose
In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.

# Other information
Keep all appointments with your doctor and the laboratory. Your doctor will order certain lab tests to check your response to erythromycin and sulfisoxazole.
Do not let anyone else take your medication. Your prescription is probably not refillable. If you still have symptoms of infection after you finish the erythromycin and sulfisoxazole, call your doctor.

# Brand names
- Eryzole
- Pediazole