Allergy medicine make you sleepy
October 16, Benny One of the functions of histamines is to regulate sleep and wakefulness, and they can cross the blood . Oct 16, · Why Does Allergy Medicine Make Me Sleepy? Also known by the trademark name Benadryl, this medication ca. The human allergy medication diphenhydramine hydrochloride (HCL) can be used to relieve certain allergy symptoms in dogs, notes Trupanion. Find Deals on allergic reaction medicine in Health Care on Amazon. What can you do about drowsiness from allergy medicines? Some antihistamines are less likely to cause drowsiness than others. Reactions vary considerably from one person to another. What relieves your symptoms without making you sleepy may be different from what works for someone else. Antihistamines used to treat respiratory symptoms can get into the brain and interrupt this work, making you feel drowsy. Unrelated to the immune system, histamine is also produced in the brain, where it plays an important part in feeling awake. Antihistamines used to treat respiratory symptoms can get into the brain and interrupt this work, making you feel drowsy. Antihistamine medications relieve these symptoms by blocking the unwanted effects of histamine. . Jul 05, · Antihistamines are a common and effective way to manage seasonal allergies, and modern allergy medicines are less likely to cause drowsiness than older antihistamines. While this symptom is not noted as serious, it is recommended a person contact a doctor if problems persist. Other possib. Drowsiness may occur as a side effect of taking ibuprofen, according to WebMD.