The serum concentration of Clarithromycin can be decreased when it is combined with Siltuximab. The metabolism of Zalcitabine can be decreased when combined with Clarithromycin. The metabolism of Proguanil can be decreased when combined with Clarithromycin. Promazine may increase the QTc-prolonging activities of Clarithromycin. The serum concentration of Vinflunine can be increased when it is combined with Clarithromycin. The therapeutic efficacy of Clarithromycin can be decreased when used in combination with Lisinopril. The therapeutic efficacy of Clarithromycin can be decreased when used in combination with Atazanavir. The metabolism of Nimesulide can be decreased when combined with Clarithromycin. The metabolism of Warfarin can be decreased when combined with Clarithromycin. Protriptyline may increase the QTc-prolonging activities of Clarithromycin. The serum concentration of Ranolazine can be increased when it is combined with Clarithromycin. The metabolism of Odanacatib can be decreased when combined with Clarithromycin. The therapeutic efficacy of Clarithromycin can be decreased when used in combination with Trandolapril. The metabolism of Ambroxol can be decreased when combined with Clarithromycin. The metabolism of Clarithromycin can be decreased when combined with Moclobemide. The metabolism of Estrone can be decreased when combined with Clarithromycin. The serum concentration of Etizolam can be increased when it is combined with Clarithromycin. The metabolism of Tesmilifene can be decreased when combined with Clarithromycin. The metabolism of Norgestrel can be decreased when combined with Clarithromycin. The serum concentration of NCX 1022 can be increased when it is combined with Clarithromycin. The metabolism of Isosorbide Mononitrate can be decreased when combined with Clarithromycin. The serum concentration of Dihydroergotamine can be increased when it is combined with Clarithromycin. The metabolism of Naloxone can be decreased when combined with Clarithromycin. The metabolism of Vismodegib can be decreased when combined with Clarithromycin. The metabolism of Diltiazem can be decreased when combined with Clarithromycin. The serum concentration of Lomitapide can be increased when it is combined with Clarithromycin. The therapeutic efficacy of Clarithromycin can be decreased when used in combination with Temocapril. The metabolism of Daunorubicin can be decreased when combined with Clarithromycin. Clarithromycin may increase the QTc-prolonging activities of Anagrelide. The serum concentration of Axitinib can be increased when it is combined with Clarithromycin. The serum concentration of Flibanserin can be increased when it is combined with Clarithromycin. The metabolism of Calcitriol can be decreased when combined with Clarithromycin. The metabolism of Tasosartan can be decreased when combined with Clarithromycin. The serum concentration of Ivacaftor can be increased when it is combined with Clarithromycin. The serum concentration of Aripiprazole can be increased when it is combined with Clarithromycin. The metabolism of Nilvadipine can be decreased when combined with Clarithromycin. The metabolism of Chlordiazepoxide can be decreased when combined with Clarithromycin. The serum concentration of Avanafil can be increased when it is combined with Clarithromycin. The metabolism of Nitrazepam can be decreased when combined with Clarithromycin. The serum concentration of Fluocinolone Acetonide can be increased when it is combined with Clarithromycin. The metabolism of Carvedilol can be decreased when combined with Clarithromycin. The metabolism of Escitalopram can be decreased when combined with Clarithromycin. The metabolism of Lacidipine can be decreased when combined with Clarithromycin. Ibandronate may increase the QTc-prolonging activities of Clarithromycin. The metabolism of Zafirlukast can be decreased when combined with Clarithromycin. The metabolism of Nortriptyline can be decreased when combined with Clarithromycin. The serum concentration of the active metabolites of Ticagrelor can be reduced when Ticagrelor is used in combination with Clarithromycin resulting in a loss in efficacy. The serum concentration of Cobicistat can be increased when it is combined with Clarithromycin. The metabolism of Estrone sulfate can be decreased when combined with Clarithromycin. The metabolism of Amrinone can be decreased when combined with Clarithromycin. The metabolism of Deutetrabenazine can be decreased when combined with Clarithromycin. The serum concentration of Fluindione can be increased when it is combined with Clarithromycin. The therapeutic efficacy of Clarithromycin can be decreased when used in combination with Nelfinavir. The metabolism of Fendiline can be decreased when combined with Clarithromycin. The metabolism of Trazodone can be decreased when combined with Clarithromycin. The metabolism of Darifenacin can be decreased when combined with Clarithromycin. The metabolism of Celecoxib can be decreased when combined with Clarithromycin. The metabolism of Fluvastatin can be decreased when combined with Clarithromycin. The serum concentration of Halcinonide can be increased when it is combined with Clarithromycin. The serum concentration of Clarithromycin can be decreased when it is combined with Deferasirox. The serum concentration of Dutasteride can be increased when it is combined with Clarithromycin. The metabolism of Paritaprevir can be decreased when combined with Clarithromycin. The metabolism of Chlorphenamine can be decreased when combined with Clarithromycin. The metabolism of Mibefradil can be decreased when combined with Clarithromycin. The metabolism of Dextropropoxyphene can be decreased when combined with Clarithromycin. The metabolism of Nicotine can be decreased when combined with Clarithromycin. The metabolism of Clofibrate can be decreased when combined with Clarithromycin. Famotidine may increase the QTc-prolonging activities of Clarithromycin. The metabolism of Benzyl alcohol can be decreased when combined with Clarithromycin. The serum concentration of Lurasidone can be increased when it is combined with Clarithromycin. The serum concentration of Fludrocortisone can be increased when it is combined with Clarithromycin. The metabolism of Aliskiren can be decreased when combined with Clarithromycin. The serum concentration of Levobupivacaine can be increased when it is combined with Clarithromycin. The metabolism of Palonosetron can be decreased when combined with Clarithromycin. The metabolism of Risperidone can be decreased when combined with Clarithromycin. The metabolism of Xylometazoline can be decreased when combined with Clarithromycin. The serum concentration of Pitavastatin can be increased when it is combined with Clarithromycin. The metabolism of Felbamate can be decreased when combined with Clarithromycin. The serum concentration of Deslanoside can be increased when it is combined with Clarithromycin. The serum concentration of Zuclopenthixol can be increased when it is combined with Clarithromycin. Clarithromycin may increase the QTc-prolonging activities of Procainamide. Ofloxacin may increase the QTc-prolonging activities of Clarithromycin. The metabolism of Morphine can be decreased when combined with Clarithromycin. The therapeutic efficacy of Clarithromycin can be decreased when used in combination with Enalaprilat. The metabolism of Nifedipine can be decreased when combined with Clarithromycin. The therapeutic efficacy of Clarithromycin can be decreased when used in combination with Quinapril. The metabolism of Albendazole can be decreased when combined with Clarithromycin. Formoterol may increase the QTc-prolonging activities of Clarithromycin. The metabolism of Nisoldipine can be decreased when combined with Clarithromycin. The metabolism of Dorzolamide can be decreased when combined with Clarithromycin. The metabolism of Cholecalciferol can be decreased when combined with Clarithromycin. The therapeutic efficacy of Clarithromycin can be decreased when used in combination with Letaxaban. The metabolism of Clorazepate can be decreased when combined with Clarithromycin. The metabolism of Hydroxyprogesterone caproate can be decreased when combined with Clarithromycin. The serum concentration of Cilostazol can be increased when it is combined with Clarithromycin. The metabolism of Clobazam can be decreased when combined with Clarithromycin. The metabolism of Lisuride can be decreased when combined with Clarithromycin. Haloperidol may increase the QTc-prolonging activities of Clarithromycin. The serum concentration of Paricalcitol can be increased when it is combined with Clarithromycin. The serum concentration of Tixocortol can be increased when it is combined with Clarithromycin. Ciprofloxacin may increase the QTc-prolonging activities of Clarithromycin. The serum concentration of Betamethasone can be increased when it is combined with Clarithromycin. The metabolism of Clarithromycin can be decreased when combined with Clemastine. The therapeutic efficacy of Clarithromycin can be decreased when used in combination with Ecabet. The metabolism of Aminophylline can be decreased when combined with Clarithromycin. The serum concentration of Hydrocodone can be increased when it is combined with Clarithromycin. The metabolism of Amlodipine can be decreased when combined with Clarithromycin. The metabolism of Valdecoxib can be decreased when combined with Clarithromycin. The therapeutic efficacy of Clarithromycin can be decreased when used in combination with Faldaprevir. The metabolism of Rolapitant can be decreased when combined with Clarithromycin. The serum concentration of Cobimetinib can be increased when it is combined with Clarithromycin. The serum concentration of Desoximetasone can be increased when it is combined with Clarithromycin. The metabolism of Delavirdine can be decreased when combined with Clarithromycin. The metabolism of Meloxicam can be decreased when combined with Clarithromycin. The metabolism of Permethrin can be decreased when combined with Clarithromycin. Vorinostat may increase the QTc-prolonging activities of Clarithromycin. The serum concentration of Flumethasone can be increased when it is combined with Clarithromycin. The therapeutic efficacy of Clarithromycin can be decreased when used in combination with Darexaban. The serum concentration of Dapoxetine can be increased when it is combined with Clarithromycin. The metabolism of Carboxyamidotriazole can be decreased when combined with Clarithromycin. The serum concentration of the active metabolites of Ifosfamide can be reduced when Ifosfamide is used in combination with Clarithromycin resulting in a loss in efficacy. The metabolism of Diclofenac can be decreased when combined with Clarithromycin. The metabolism of Donepezil can be decreased when combined with Clarithromycin. The serum concentration of Ulipristal can be increased when it is combined with Clarithromycin. The serum concentration of Tamsulosin can be increased when it is combined with Clarithromycin. The serum concentration of Methylergometrine can be increased when it is combined with Clarithromycin. The risk or severity of adverse effects can be increased when Clarithromycin is combined with Abemaciclib. Clarithromycin may increase the QTc-prolonging activities of Thioridazine. The serum concentration of Cabozantinib can be increased when it is combined with Clarithromycin. The metabolism of Praziquantel can be decreased when combined with Clarithromycin.