Having multiple chronic conditions does not alter medication efficacy: study

'No evidence' that treatment efficacy was modified by the number of comorbidities, say UK doctors.

Treatments for single conditions are just as effective in patients with multiple chronic diseases regardless of the total number or type of comorbidities, according to a review of more than 100 clinical trials. 

UK-led researchers say their results should reassure doctors and clinical guideline authors alike when recommending pharmacotherapy for those with multiple comorbidities.