Antihistamine drugs may also be used to relieve or prevent symptoms associated with colds and the flu.
Some experts have disputed the effect of antihistamine medications in effectively treating cold symptoms.
These side effect may vary greatly from the side effects that may occur in adults.
Some experts maintain that over-the-counter medications that combine antihistamines with decongestants are usually ineffective when used in preschool-age children, particularly those under the age of 12.
There also are several side effects to consider before giving a child an antihistamine.
Elderly patients are typically more susceptible to the effects of antihistamines.
Aside from causing the acutely uncomfortable feeling of obstructed breathing, sinus congestion also impedes the flow of mucous through the nose and contributes to post-nasal drip.
They point out that antihistamines work by blocking the effects of histamines, which are not involved in the symptoms of colds or the flu.
They also maintain that even if antihistamines are effective in reducing symptoms of these viral infections, antihistamines are likely to block the flow of mucus from the nose, thus actually trapping the cold or flu virus in the body.
Sinus congestion,or the swelling of the mucous membranes lining the nasal and sinus passages, is one of life's small torments.
Knowing how and when to choose among the shelves full of sinus medications can mean the difference between a good night's sleep and a night hunched over the tissue box.
Histamines attach to cells in the body and stimulate them, causing symptoms such as itching, sneezing, a runny nose and watery eyes.