instruction: hello doctor I have been using cialis for years with great results but recently it is not working well what could cause this
output: hi tadalafil has no known interaction with the drugs you have mentioned but magnesium must be taken two to three hours apart from the drug to prevent decreased absorption do you have morning erections is it situational difficulty or on all occasions on a scale of 10 how do you rate previous and present erections any recent stressor for how long are you having the issue any other comorbidities smoking