Levitra is a remedy for erectile dysfunction. Concomitant different erectile dysfunction treatments: not really helpful. Concomitant different erectile dysfunction treatments: not beneficial. Additive hypotensive effects with concomitant α-blockers, different antihypertensives; warning. Additive hypotensive results with concomitant α-blockers, different antihypertensives; warning. Concomitant nitrates, or nitric oxide donors.