Antihistamine
Definition 1 of 1

Medicine
Antihistamines are often used to treat allergies and should be taken as directed to avoid side effects.

Before taking antihistamines, consult a doctor if you have other health issues.
Usage Frequency
Antihistamines are widely known and used but can vary in their formula and effects.

Many antihistamines may cause drowsiness, make sure to check labels before driving.
Timing
Taking antihistamines before exposure to allergens can improve effectiveness.

For best results, consider taking them at the same time each day.
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