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The maximum dose of LEVITRA for which human data are available is a single 120 mg dose administered to healthy male volunteers. The majority of these subjects experienced reversible back pain/myalgia and/or “abnormal vision.” Single doses up to 80 mg vardenafil and multiple doses up to 40 mg vardenafil administered once daily over 4 weeks were tolerated without producing serious adverse side effects.
When 40 mg of vardenafil was administered twice daily, cases of severe back pain were observed. No muscle or neurological toxicity was identified.
In cases of overdose, standard supportive measures should be taken as required. Renal dialysis is not expected to accelerate clearance as vardenafil is highly bound to plasma proteins and not significantly eliminated in the urine.
Administration of LEVITRA with nitrates (either regularly and/or intermittently) and nitric oxide donors is contraindicated [see CLINICAL PHARMACOLOGY]. Consistent with the effects of PDE5 inhibition on the nitric oxide/cyclic guanosine monophosphate pathway, PDE5 inhibitors, including LEVITRA, may potentiate the hypotensive effects of nitrates. A suitable time interval following dosing of LEVITRA for the safe administration of nitrates or nitric oxide donors has not been determined.
Guanylate Cyclase (GC) Stimulators
Do not use LEVITRA in patients who are using a GC stimulator, such as riociguat. PDE5 inhibitors, including LEVITRA may potentiate the hypotensive effects of GC stimulators.This monograph has been modified to include the generic and brand name in many instances.
Last reviewed on RxList: 10/8/2015
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