How to Know When to Take Antihistamines

Antihistamines are medications that block the body's release of histamine. Histamine is released in response to an allergic reaction, trauma to the skin or insect bites.

Things You'll Need

• Antihistamines

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Instructions

• 1

  Opt for antihistamines when dealing with hay fever, nasal allergies and some systemic allergies, as well as itchy rashes, bee stings and insect bites.

• 2

  Take advantage of side effects by using antihistamines for sleep, to combat nausea and motion sickness, and to dry up secretions. But check with your doctor first.

• 3

  Avoid using antihistamines to treat colds and flu. When you have a respiratory infection, your body needs to drain out the germ-ridden phlegm from your nasal passages and lungs. Drying up your mucus membranes with antihistamines makes it more difficult for your body to cough up and sneeze out infectious exudate.

• 4

  Read your cough syrup labels. Many cough remedies contain antihistamines. Avoid the ones that do if you're treating a cold or flu cough. Choose a cough suppressant or a decongestant.