Your doctor or pharmacist may already be aware of any possible drug interactions
and may be monitoring you for them. Do not start, stop, or change the dosage
of any medicine before checking with your doctor or pharmacist first.
This drug should not be used with the following medications because very serious
interactions may occur: cisapride, ergot drugs (e.g., dihydroergotamine, ergotamine),
ivabradine, pimozide, rifampin, anti-seizure drugs (e.g., carbamazepine, phenobarbital,
phenytoin), certain "statin" drugs for high cholesterol (atorvastatin,
lovastatin, simvastatin), St John's wort.
If you are currently using any of these medications, tell your doctor or pharmacist
before starting telithromycin.
Before using this medication, tell your doctor or pharmacist of all prescription
and nonprescription/herbal products you may use, especially of: digoxin, live
bacterial vaccines (e.g., typhoid or cholera vaccines), metoprolol, theophylline,
certain "water pills" (diuretics such as furosemide, hydrochlorothiazide),
warfarin, drugs removed from your system by certain liver enzymes (CYP 3A4 substrates
such as cyclosporine, eplerenone, midazolam, sildenafil, sirolimus, tacrolimus,
triazolam).
Other drugs besides telithromycin that may affect the heart rhythm (QT prolongation
in the EKG) include dofetilide, quinidine, sotalol, procainamide, and sparfloxacin,
among others. QT prolongation can infrequently result in serious (rarely fatal)
irregular heartbeats. Consult your doctor or pharmacist for details, and ask
for instructions about whether you need to stop any other QT-prolonging drugs
you may be using.
This medication may decrease the effectiveness of certain hormonal birth control
products (pill, patch, ring). This effect can result in pregnancy. If you are
using a hormonal birth control product, you may need to use an additional form
of reliable birth control while using this medication. Consult your doctor or
pharmacist for details about your product.
This document does not contain all possible interactions. Therefore, before
using this product, tell your doctor or pharmacist of all the products you use.
Keep a list of all your medications with you, and share the list with your doctor
and pharmacist.