It may cause drowsiness and impair performance in tests of auditory vigilance. It may also impair the patients ability to drive and also to use machineries. So, driving and operation of machineries should be avoided during treatment with Aquaphen. Although there are no objective data, Avoid the concomitant use of alcohol or other centrally acting sedatives. Although Pseudoephedrine has virtually no pressor effect in patients with normal blood pressure, Aquaphen should be used with caution in patients taking antihypertensive agents, tricyclic antidepressants or other sympathomimetic agents such as decongestant, appetite suppressants and amphetamine-like psychostimulants. It effects on the blood...