Administration of LEVITRA with nitrates and nitric oxide donors is contraindicated. 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

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LEVITRA: Most Common Side Effects

The most frequently occurring side effects (≥2% with LEVITRA, and more frequent than placebo) include "scrollbars=yes, resizable=yes, width=400, height=400,top=100, left=100"[1]:

In fixed- and flexible-dose,|| randomized, controlled trials of 5-mg, 10-mg, or 20-mg doses of vardenafil. LEVITRA
Headache 15% 4%
Flushing 11% 1%
Rhinitis 9% 3%
Dyspepsia 4% 1%
Accidental Injury 3% 2%
Sinusitis 3% 1%
Flu Syndrome 3% 2%
Dizziness 2% 1%
Increased Creatine Kinase 2% 1%
Nausea 2% 1%
|| Flexible-dose studies started all patients at LEVITRA 10 mg and allowed decrease in dose to 5 mg or increase in dose to 20 mg based on side effects and efficacy. "scrollbars=yes, resizable=yes, width=400, height=400,top=100, left=100"[1]
All the events listed in this table were deemed to be adverse drug reactions with the exception of accidental injury.

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