Sammy714 - I HAVE BEEN TAKING FLOMAX FOR ABOUT 4 YEARS NOW , It worked great the first 2 years , and then it started not working making my bladder muscles weaker , i feel , I do not have enlarged prostrate , My doctors feel it is anxeity causing my problems urinating , Why does he continue to keep me on Flomax if I don't have a enlarged. Cough and Nasal congestion. WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms cough and nasal congestion including Common cold, Bronchitis, and Asthma (child). Nasal congestion is the blockage of the nasal passages usually due to membranes lining the nose becoming swollen from inflamed blood vessels. Nasal decongestants target the discomfort directly. Summary. Nasal congestion is found among people who take Flomax, especially for people who are male, 60+ old , have been taking the drug for 1 month, also take medication Zometa, and have High blood pressure. Interesting as I was looking for a solution to my constant sinus congestion and I found your post. I have been on the generic tamsulosin/Flomax for a couple years now, but this is the first I have heard of it causing congestion as a side effect. Flomax is used to help people (like men with BPH) urinate more easily. Be forewarned though, it can have side effects including severe nasal congestion. Have been having stuffy nose/ sinus congestion problems that seem to get worse an hour or two after I take my Flomax and let up a bit after about 24 hours pass. Doctors give unbiased, trusted information on whether Flomax can cause or treat Congested Nose: Dr. Hegab on flomax nasal congestion: The common cold virus can cause all your symptoms; care is purely supportive in nature. Antibiotics can't cure a viral infection. If your symptoms persist for more than 10 days or progressively worsen, there may be a role for antibiotic treatment of a sinus. I have been on Flomax (0.4 once a day) for 14 months. As far as side effects that I am aware of, Retrograde Ejaculation and Nasal Congestion are the ones I would like clarification about! Infections — such as colds, flu or sinusitis — and allergies are frequent causes of nasal congestion and runny nose. Sometimes a congested and runny nose can be caused by irritants such as tobacco smoke and car exhaust. This condition is called nonallergic rhinitis or vasomotor rhinitis.