Caution to be exercised in patients who are using drugs with CNS depressant effect simultaneously with DECOLGEN FX.
Avoid alcohol while on this medication to reduce liver damage risk.
Concomitant use of DECOLGEN FX with other sympathomimetic such as decongestant, tricyclic antidepressants, appetite suppressant and amphetamine like psychostimulants or with monoamine oxidase inhibitors, which interfere with the catabolism of sympathomimetic amines, may occasionally cause a rise in blood pressure. Due to the pseudoephedrine content, DECOLGEN FX may partially reverse the hypotensive action of drugs which interfere with sympathetic activity including boetylium, bethanidine, guanethidine, deprisoquine, methyldopa, alpha and beta adrenergic blocking agent.