Please tell me, could i take theophylline and singular together?

D/W your doctor.: No drug interactions were noted on Drugs.Com drug interaction checker – but that is not a guarantee that an interaction could not occur. (http://www.drugs.com/interactions-check.php?drug_list=2177-0,1654-1024)

Yes: if recommended by your doctor. Mechanism of action is different. Theophylline is a phosphodiesterase inhibitor hence function as a bronchodilator while Singulair (montelukast) is a leukotriene inhibitor decreasing immune reaction

Yes: but theophyllin is rarely used for asthma as there are newer medications that are better choices.

Theophylline/Singula: As prescribed, should be ok.