Many popular nonprescription (over-the-counter) cold and allergy medications contain decongestants that can cause the bladder neck to contract. This restricts urine flow and can lead to the complete closure of the bladder opening and cause acute urinary retention. For this reason, these cold and allergy medications are labeled with warnings against their use if a person has benign prostatic hyperplasia (BPH) -- enlarged prostate. While short-term use of these medicines is unlikely to be a significant problem, chronic use should be avoided.
Antihistamines also can cause problems because they may interfere with the ability of the bladder to contract. If you think you need medications for allergies, talk to your primary healthcare practitioner about prescription medications that do not cause urinary symptoms.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.