The metabolism of Alfuzosin can be decreased when combined with Venlafaxine. The risk or severity of adverse effects can be increased when Propoxycaine is combined with Venlafaxine. The risk or severity of adverse effects can be increased when Venlafaxine is combined with Selegiline. Venlafaxine may increase the hyponatremic activities of Quinethazone. Venlafaxine may increase the tachycardic activities of Arformoterol. The risk or severity of adverse effects can be increased when Gamma Hydroxybutyric Acid is combined with Venlafaxine. L-Tryptophan may increase the serotonergic activities of Venlafaxine. Venlafaxine may increase the QTc-prolonging activities of Ziprasidone. The risk or severity of adverse effects can be increased when Metergoline is combined with Venlafaxine. The risk or severity of adverse effects can be increased when Venlafaxine is combined with Dapiprazole. The metabolism of Diazepam can be decreased when combined with Venlafaxine. The risk or severity of adverse effects can be increased when Venlafaxine is combined with Chlorprothixene. The risk or severity of adverse effects can be increased when Doxylamine is combined with Venlafaxine. The metabolism of Diphenhydramine can be decreased when combined with Venlafaxine. Venlafaxine may increase the antiplatelet activities of Etodolac. Venlafaxine may increase the serotonergic activities of Methylene blue. The metabolism of Timolol can be decreased when combined with Venlafaxine. Venlafaxine may increase the QTc-prolonging activities of Goserelin. Venlafaxine may increase the tachycardic activities of Rilmenidine. The serum concentration of Arotinolol can be increased when it is combined with Venlafaxine. The metabolism of Letermovir can be decreased when combined with Venlafaxine. The metabolism of Minaprine can be decreased when combined with Venlafaxine. The metabolism of Bupivacaine can be decreased when combined with Venlafaxine. The metabolism of Venlafaxine can be decreased when combined with Paroxetine. The metabolism of Idarubicin can be decreased when combined with Venlafaxine. Heroin may increase the serotonergic activities of Venlafaxine. The serum concentration of Edoxaban can be increased when it is combined with Venlafaxine. The metabolism of Zonisamide can be decreased when combined with Venlafaxine. The metabolism of Rolapitant can be decreased when combined with Venlafaxine. The metabolism of Cyclosporine can be decreased when combined with Venlafaxine. The risk or severity of adverse effects can be increased when Vigabatrin is combined with Venlafaxine. The metabolism of Valbenazine can be decreased when combined with Venlafaxine. Venlafaxine may increase the hyponatremic activities of Hydroflumethiazide. The serum concentration of Bosentan can be increased when it is combined with Venlafaxine. The metabolism of Dapsone can be decreased when combined with Venlafaxine. The serum concentration of Pazopanib can be increased when it is combined with Venlafaxine. Venlafaxine may increase the tachycardic activities of Brimonidine. The metabolism of Eszopiclone can be decreased when combined with Venlafaxine. Venlafaxine may decrease effectiveness of Ioflupane I-123 as a diagnostic agent. The metabolism of Isavuconazonium can be decreased when combined with Venlafaxine. The serum concentration of Cobimetinib can be increased when it is combined with Venlafaxine. The metabolism of Sorafenib can be decreased when combined with Venlafaxine. Opium may increase the serotonergic activities of Venlafaxine. The risk or severity of adverse effects can be increased when Pizotifen is combined with Venlafaxine. The risk or severity of adverse effects can be increased when Methocarbamol is combined with Venlafaxine. The metabolism of Nifedipine can be decreased when combined with Venlafaxine. The metabolism of Caffeine can be decreased when combined with Venlafaxine. The metabolism of Fluphenazine can be decreased when combined with Venlafaxine. The risk or severity of adverse effects can be increased when Thiopental is combined with Venlafaxine. Venlafaxine may increase the hypoglycemic activities of Insulin Detemir. The risk or severity of adverse effects can be increased when Hydroxyzine is combined with Venlafaxine. Tedizolid Phosphate may increase the serotonergic activities of Venlafaxine. The metabolism of Felbamate can be decreased when combined with Venlafaxine. The metabolism of Praziquantel can be decreased when combined with Venlafaxine. Venlafaxine may increase the QTc-prolonging activities of Tetrabenazine. The risk or severity of adverse effects can be increased when Oxethazaine is combined with Venlafaxine. The serum concentration of Nintedanib can be increased when it is combined with Venlafaxine. Etorphine may increase the serotonergic activities of Venlafaxine. The metabolism of Venlafaxine can be decreased when combined with Irbesartan. The metabolism of Glipizide can be decreased when combined with Venlafaxine. The metabolism of Icotinib can be decreased when combined with Venlafaxine. Venlafaxine may increase the QTc-prolonging activities of Granisetron. Lithium may increase the serotonergic activities of Venlafaxine. Venlafaxine may increase the QTc-prolonging activities of Arsenic trioxide. The serum concentration of Zuclopenthixol can be increased when it is combined with Venlafaxine. Pirlindole may increase the serotonergic activities of Venlafaxine. The serum concentration of Bupranolol can be increased when it is combined with Venlafaxine. The serum concentration of Indinavir can be decreased when it is combined with Venlafaxine. The metabolism of Ruxolitinib can be decreased when combined with Venlafaxine. The metabolism of Terfenadine can be decreased when combined with Venlafaxine. The metabolism of Omeprazole can be decreased when combined with Venlafaxine. The metabolism of Venlafaxine can be decreased when combined with Midostaurin. The metabolism of Progesterone can be decreased when combined with Venlafaxine. The metabolism of Phenformin can be decreased when combined with Venlafaxine. The metabolism of Pravastatin can be decreased when combined with Venlafaxine. The metabolism of Sulfamethoxazole can be decreased when combined with Venlafaxine. The serum concentration of Venlafaxine can be increased when it is combined with Vemurafenib. The metabolism of Venlafaxine can be increased when combined with Fosphenytoin. The risk or severity of adverse effects can be increased when Venlafaxine is combined with Phenindione. The serum concentration of Afatinib can be increased when it is combined with Venlafaxine. The risk or severity of adverse effects can be increased when Venlafaxine is combined with Ergonovine. The risk or severity of adverse effects can be increased when Venlafaxine is combined with Propericiazine. Venlafaxine may increase the tachycardic activities of Olodaterol. Venlafaxine may increase the hyponatremic activities of Methyclothiazide. Venlafaxine may increase the serotonergic activities of Fenfluramine. The risk or severity of adverse effects can be increased when Venlafaxine is combined with Doxepin. Venlafaxine may increase the QTc-prolonging activities of Citalopram. The metabolism of Estradiol can be decreased when combined with Venlafaxine. Tropisetron may increase the serotonergic activities of Venlafaxine. The metabolism of Brinzolamide can be decreased when combined with Venlafaxine. The risk or severity of adverse effects can be increased when Venlafaxine is combined with Trifluoperazine. Carfentanil may increase the serotonergic activities of Venlafaxine. The metabolism of Rucaparib can be decreased when combined with Venlafaxine. The risk or severity of adverse effects can be increased when Venlafaxine is combined with Perazine. Venlafaxine may increase the tachycardic activities of Isoprenaline. The risk or severity of adverse effects can be increased when Venlafaxine is combined with Clomipramine. The risk or severity of adverse effects can be increased when Trichloroethylene is combined with Venlafaxine. Venlafaxine may increase the QTc-prolonging activities of Asenapine. The serum concentration of Venlafaxine can be increased when it is combined with Fosaprepitant. The risk or severity of adverse effects can be increased when Baclofen is combined with Venlafaxine. The metabolism of Encainide can be decreased when combined with Venlafaxine. The metabolism of Enasidenib can be decreased when combined with Venlafaxine. The metabolism of Venlafaxine can be decreased when combined with Bortezomib. The metabolism of Ciclesonide can be decreased when combined with Venlafaxine. Venlafaxine may increase the hypoglycemic activities of Tolazamide. The metabolism of Fluvastatin can be decreased when combined with Venlafaxine. The metabolism of Voxilaprevir can be decreased when combined with Venlafaxine. The risk or severity of adverse effects can be increased when Venlafaxine is combined with Prothipendyl. The metabolism of Laquinimod can be decreased when combined with Venlafaxine. Venlafaxine may decrease the antihypertensive activities of Ephedra. The metabolism of Rupatadine can be decreased when combined with Venlafaxine. The metabolism of Ketamine can be decreased when combined with Venlafaxine. The metabolism of Venlafaxine can be decreased when combined with Eslicarbazepine acetate. The risk or severity of adverse effects can be increased when Venlafaxine is combined with Acenocoumarol. The metabolism of Venlafaxine can be decreased when combined with Nicardipine. The metabolism of Venlafaxine can be decreased when combined with Clarithromycin. Venlafaxine may increase the QTc-prolonging activities of Primaquine. The risk or severity of adverse effects can be increased when Venlafaxine is combined with Acepromazine. Pheniprazine may increase the serotonergic activities of Venlafaxine. Venlafaxine may increase the QTc-prolonging activities of Pentamidine. The metabolism of Dexmethylphenidate can be decreased when combined with Venlafaxine. The metabolism of Pindolol can be decreased when combined with Venlafaxine. The metabolism of Quazepam can be decreased when combined with Venlafaxine. The metabolism of Retapamulin can be decreased when combined with Venlafaxine. The metabolism of Propranolol can be decreased when combined with Venlafaxine. The risk or severity of adverse effects can be increased when Venlafaxine is combined with Bromocriptine. The metabolism of Trimethoprim can be decreased when combined with Venlafaxine. The serum concentration of Eletriptan can be increased when it is combined with Venlafaxine. The metabolism of Etonogestrel can be decreased when combined with Venlafaxine. Venlafaxine may increase the tachycardic activities of Orciprenaline.