Effexor XR Interactions Explained
The following sections explain in detail the potentially negative interactions that can occur when
Effexor XR is combined with any of the drugs listed above.
Alcohol
"Blood Thinners"
Combining Effexor XR with anticoagulant or antiplatelet medications (commonly known as blood thinners) may increase the risk of bleeding. Check with your healthcare provider before taking such medications with Effexor XR.
Cimetidine (Tagamet)
Taking
cimetidine and Effexor XR together can increase the level of Effexor XR in your blood, increasing your risk of side effects. If you are taking these drugs together, your healthcare provider may need to lower your Effexor XR dose or may suggest an alternative to cimetidine. However, this interaction is usually not a problem (except for people with
high blood pressure or liver problems).
Haloperidol (Haldol)
Taking Effexor XR with
haloperidol can raise the level of haloperidol in your blood, increasing your risk of side effects. If you are taking these drugs together, your healthcare provider may need to decrease your haloperidol dosage.
Indinavir (Crixivan)
Taking Effexor XR with
indinavir may decrease the level of indinavir in your blood, perhaps making it less effective. If you are taking these drugs together, your healthcare provider may need to increase your dose of indinavir.
Ketoconazole (Nizoral)
Taking Effexor XR with ketoconazole may raise the level of Effexor XR in your blood, increasing your risk of side effects. If you are taking these drugs together, your healthcare provider may need to decrease your
Effexor XR dosage.
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