Antihistamine Dosage & Drowsiness: What You Need to Know

The amount of antihistamines that can make you drowsy varies from person to person. Some people may start feeling drowsy after taking only a small dose, while others may need a higher dose. It is important to follow the dosing instructions provided by your doctor or pharmacist.

Generally speaking, the recommended daily dosage of antihistamines for adults and children 12 years and older is 10 to 50 milligrams. However, some antihistamines may be available in different strengths, so it is important to read the label carefully before taking them.

If you are taking an antihistamine for the first time, it is best to start with the lowest recommended dose and increase the dose gradually as needed. This will help to minimize the risk of side effects, such as drowsiness.

If you are experiencing drowsiness after taking an antihistamine, it is important to avoid activities that require your full attention, such as driving or operating heavy machinery. You should also avoid drinking alcohol, as it can increase the sedative effects of antihistamines.

If you are concerned about the potential for drowsiness, you can talk to your doctor about other options for treating your allergy symptoms.