Do NOT use Zithromax if:
- you are allergic to any ingredient in Zithromax, to other macrolide antibiotics (eg, erythromycin), or to ketolide antibiotics (eg, telithromycin)
- you are taking dofetilide, nilotinib, pimozide, propafenone, or tetrabenazine
Contact your doctor or health care provider right away if any of these apply to you.
Before using Zithromax:
Some medical conditions may interact with Zithromax. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:
- if you are pregnant, planning to become pregnant, or are breast-feeding
- if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
- if you have allergies to medicines, foods, or other substances
- if you have liver or kidney problems, myasthenia gravis, or abnormal heart rhythms
Some MEDICINES MAY INTERACT with Zithromax. Tell your health care provider if you are taking any other medicines, especially any of the following:
- Antiarrhythmics (eg, disopyramide, dofetilide), arsenic, astemizole, cisapride, domperidone, maprotiline, methadone, paliperidone, pimozide, propafenone, quinolone antibiotics (eg, levofloxacin), terfenadine, or tetrabenazine because the risk of heart problems, including irregular heartbeat, may be increased
- Nelfinavir because it may increase the risk of Zithromax’s side effects
- Rifampin because it may decrease Zithromax’s effectiveness
- Anticoagulants (eg, warfarin), carbamazepine, cyclosporine, digoxin, ergot derivatives (eg, ergotamine), nilotinib, phenytoin, rifampin, theophylline, triazolam, or tyrosine kinase receptor inhibitors (eg, dasatinib) because the risk of their side effects may be increased by Zithromax
This may not be a complete list of all interactions that may occur. Ask your health care provider if Zithromax may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.
How to use Zithromax:
Use Zithromax as directed by your doctor. Check the label on the medicine for exact dosing instructions.
- Zithromax is usually given as an injection at your doctor’s office, hospital, or clinic. If you will be using Zithromax at home, a health care provider will teach you how to use it. Be sure you understand how to use Zithromax. Follow the procedures you are taught when you use a dose. Contact your health care provider if you have any questions.
- Do not use Zithromax if it contains particles, is cloudy or discolored, or if the vial is cracked or damaged.
- Keep this product, as well as syringes and needles, out of the reach of children and pets. Do not reuse needles, syringes, or other materials. Ask your health care provider how to dispose of these materials after use. Follow all local rules for disposal.
- To clear up your infection completely, use Zithromax for the full course of treatment. Keep using it even if you feel better in a few days.
- If you miss a dose of Zithromax, use it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not use 2 doses at once.
Ask your health care provider any questions you may have about how to use Zithromax.
Important safety information:
- Zithromax may cause drowsiness, dizziness, blurred vision, or lightheadedness. These effects may be worse if you take it with alcohol or certain medicines. Use Zithromax with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.
- Zithromax may cause you to become sunburned more easily. Avoid the sun, sunlamps, or tanning booths until you know how you react to Zithromax. Use a sunscreen or wear protective clothing if you must be outside for more than a short time.
- Mild diarrhea is common with antibiotic use. However, a more serious form of diarrhea (pseudomembranous colitis) may rarely occur. This may develop while you use the antibiotic or within several months after you stop using it. Contact your doctor right away if stomach pain or cramps, severe diarrhea, or bloody stools occur. Do not treat diarrhea without first checking with your doctor.
- Tell your doctor or dentist that you take Zithromax before you receive any medical or dental care, emergency care, or surgery.
- Long-term or repeated use of Zithromax may cause a second infection. Tell your doctor if signs of a second infection occur. Your medicine may need to be changed to treat this.
- Be sure to use Zithromax for the full course of treatment. If you do not, the medicine may not clear up your infection completely. The bacteria could also become less sensitive to this or other medicines. This could make the infection harder to treat in the future.
- Zithromax only works against bacteria; it does not treat viral infections (eg, the common cold).
- Zithromax should be used with extreme caution in CHILDREN younger than 16 years old; safety and effectiveness in these children have not been confirmed.
- PREGNANCY and BREAST-FEEDING: If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using Zithromax while you are pregnant. It is not known if Zithromax is found in breast milk. If you are or will be breast-feeding while you use Zithromax, check with your doctor. Discuss any possible risks to your baby.
Possible side effects of Zithromax:
All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:
Diarrhea; headache; loose stools; nausea; stomach pain; upset stomach; vomiting.
Seek medical attention right away if any of these SEVERE side effects occur:
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue; unusual hoarseness); bloody stools; changes in hearing or hearing loss; chest pain; eye or vision problems; irregular heartbeat; muscle weakness; pounding in the chest; red, swollen, blistered, or peeling skin; ringing in the ears; seizure; severe diarrhea; stomach cramps/pain; trouble speaking or swallowing; yellowing of the skin or eyes.
This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects.
If OVERDOSE is suspected:
Contact your local Poison Control or emergency room immediately. Symptoms may include diarrhea; nausea; upset stomach; vomiting.
Proper storage of Zithromax:
Zithromax is usually handled and stored by a health care provider. If you are using Zithromax at home, store Zithromax as directed by your pharmacist or health care provider. Keep Zithromax out of the reach of children and away from pets.
- If you have any questions about Zithromax, please talk with your doctor, pharmacist, or other health care provider.
- Zithromax is to be used only by the patient for whom it is prescribed. Do not share it with other people. Do not use Zithromax for other health conditions.
- If your symptoms do not improve within a few days or if they become worse, check with your doctor.
- Check with your pharmacist about how to dispose of unused medicine.
This information is a summary only. It does not contain all information about Zithromax. If you have questions about the medicine you are taking or would like more information, check with your doctor, pharmacist, or other health care provider.