Tell the doctor or pharmacist if the patient is taking, has recently taken or might take any other medicines. This includes any medicines obtained without a prescription.
It is especially important to mention that the patient takes: Theophylline (used to treat asthma): the effect of theophylline may be increased.
Blood-thinning medicines, such as warfarin, phenprocoumon: concomitant use may increase the risk of bleeding. The doctor may need to monitor more often the blood clotting parameters when Azithromycin Sandoz is also being used.
Ergotamine, dihydroergotamine (used to treat migraine): ergotism (i.e. itching in the limbs, muscle cramps and gangrene of hands and feet due to poor blood circulation) may occur. Concomitant use is therefore not recommended.
Cyclosporin (used to suppress the immune system to prevent and treat rejection of an organ or bone marrow transplant): if concomitant use is required, the doctor will check cyclosporine levels in the blood and may adapt the dose.
Digoxin (used for heart failure): concomitant use may increase digoxin levels. The doctor will check its levels in the blood.
Colchicine (used for gout and familial Mediterranean fever).
Antacids (used for indigestion): may make azithromycin less effective when used concomitantly, see Dosage & Administration. Azithromycin Sandoz should be taken one hour before, or two hours after taking antacids.
Fluconazole (for treating fungal infections).
Cisapride (used for stomach problems), terfenadine (used to treat hay fever), pimozide (used in some mental diseases), citalopram (used in depression), fluoroquinolones (antibiotics such as moxifloxacin and levofloxacin, used in bacterial infections): concomitant use with azithromycin may cause heart disorders, therefore is not recommended.
Certain medicines for irregular heart beat (called anti-arrhythmics, such as quinidine, amiodarone, sotalol). Concomitant use is not recommended.
Zidovudine (used to treat HIV infections): concomitant use can increase the risk of side effects.
Nelfinavir (used to treat HIV infections): concomitant use may increase the risk of side effects.
Alfentanil (used for narcosis) or astemizole (used to treat hay fever): concomitant use with azithromycin may increase the effect of these medicinal products.
Rifabutin (used to treat tuberculosis): The doctor may check the blood and blood levels of the medicines.
Statins (such as atorvastatin, used to lower lipids in blood): concomitant use may cause muscle disorders.
Azithromycin Sandoz with food and drink: The tablets may be taken with or without food.