The information and instructions on the following pages should not replace those given to you by your doctor.

How does Clarithromycin work?
Clarithromycin is an antibiotic that helps the body fight bacterial infections. Cystic Fibrosis (CF) patients use erythromycin for an extended period of time in order to fight inflammations. Inflammations are the body's response to a bacterial infection. Chronic ingestion of erythromycin improves respiratory functioning among CF patients.

The medication can come in a syrup form or as a powder. If it comes as a powder, ask your pharmacist to make the syrup for you.

How should I store the medication?
Store the syrup in a cool, dark place, away from light and humidity. Keep out of reach of children.

DO NOT USE the medication past its expiration date.

Administering the Medication
Administer the medication at the times instructed by your physician. Make sure to shake the bottle when prior to giving it to your child. If your child has difficulty swallowing the medication, you can add it to their food or drink.

What should I do if I forgot to administer the dose on time?
If you forgot to administer the dose on time, give your child the medication as soon as you remember. If the next dose is in less than 3 hours, skip the next dose. Do not administer two doses at once.

When can I stop giving my child the medication?
Finish the round as instructed by your physician. Do not stop giving your child the medication even he is feeling better and no longer has a fever – this will enable the bacteria to become resistant towards the antibiotics. Throw away any leftover antibiotics once the round is done.

What side effects does the antibiotic cause?
While taking the antibiotic, your child may experience diarrhea, vomiting, stomach pains, nausea, headaches, change in appetite and/or stomach pains. These side effects go away on their own.

If your child vomited less than 20 minutes after taking a dose, re-administer the medication. If your child vomited after 20 minutes of taking the medication, there is no need to repeat the dose. In cases of continuous vomiting, please consult your doctor.

Call your doctor when

  • Your child’s condition does not improve after the first two days of treatment.
  • Your child experiences swelling or itchiness. Stop treatment immediately and call your doctor.
  • Your child’s condition worsens.
  • If your child experiences severe side effects.

Your child may experience sensitivity to light. Limit sun exposure.
The doctor may decide to change your child’s dose.

Tell your doctor if your child is taking

  • Voriconazole
  • Intraconazole
  • Warfarin
  • Theophylline
  • Budesonide