Bacterial infections:

Indications for: ERYC

Treatment of susceptible infections including upper and lower respiratory, skin and skin structure, genitourinary, Legionnaires' disease, pertussis, listeriosis. Prophylaxis for rheumatic fever attacks in penicillin-allergic patients.

Adult Dosage:

Give 1hr before meals. Usual dose: 250mg every 6hrs or 500mg every 12hrs; max 4g/day (1g/day for twice daily dosing). Legionnaires: 1–4g/day in divided doses. Prophylaxis: 250mg twice daily. See full labeling.

Children Dosage:

Give 1hr before meals. Usual dose: 30–50mg/kg/day in divided doses; may double dose in severe infections. See full labeling.

ERYC Contraindications:

Concomitant terfenadine, astemizole, cisapride, pimozide, ergotamine, dihydroergotamine, statins (eg, lovastatin, simvastatin).

ERYC Warnings/Precautions:

Avoid in proarrhythmic conditions (eg, uncorrected hypokalemia or hypomagnesemia, clinically significant bradycardia); risk of QT prolongation. Myasthenia gravis. Hepatic impairment. Elderly. Infants: risk of infantile hypertrophic pyloric stenosis; monitor for vomiting or irritability with feeding. Pregnancy (Cat.B). Nursing mothers.

ERYC Classification:

Macrolide.

ERYC Interactions:

See Contraindications. May potentiate theophylline (reduce dose of theophylline), digoxin, oral anticoagulants, hexobarbital, phenytoin, valproate. May potentiate CYP3A substrates (eg, triazolam, midazolam, statins [rhabdomyolysis], sildenafil [reduce dose of sildenafil], colchicine [reduce starting dose of colchicine, max dose should be lowered; monitor], verapamil, amlodipine, diltiazem, carbamazepine, cyclosporine, tacrolimus, alfentanil, disopyramide, bromocriptine, rifabutin, quinidine, methylprednisolone, cilostazol, vinblastine); consider dose adjustments and monitor. May be antagonized by theophylline. Hypotension, bradyarrhythmias, lactic acidosis with verapamil. QT prolongation with concomitant Class 1A (quinidine, procainamide) or Class III (dofetilide, amiodarone, sotalol) antiarrhythmics; avoid. May interfere with fluorometric detection of urinary catecholamines.

Adverse Reactions:

GI upset, abdominal pain, anorexia, hepatic dysfunction; QT prolongation, C. difficile-associated diarrhea, superinfection (discontinue if occurs).

How Supplied:

Caps—100