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It also neutralizes the histamine and stops the histamine from further movements. For this reason, if an antihistamine is taken prior to exposure to allergens, it will be more effective than if taken after exposure. The antihistamine cannot undo what has already been done such as remove histamine that has already been bound.
Antihistamines are known to cause various side effects. These include drowsiness, loss of mental acuity, loss of coordination, hyperactiveness, nausea, diarrhea, rapid heartbeat, headaches, dizziness, and sleeplessness. While relieving allergy symptoms, they may cover up other symptoms or worsen conditions. Antihistamines pose a greater risk to children, including serious side effects such as seizures. Antihistamines also pose risks to a developing fetus, as well as babies being breast-fed.
Niacin, vitamin B3, is a water-soluble vitamin. It is an important nutritional element in the healthy functioning of the digestive system, skin, nerves, and circulation. Niacin also plays a part in converting food into energy. The suggested doses are anywhere from 15 to 18 mg/day for men, 13 to 15 mg/day for women, and generally 17 to 18 mg/day for breastfeeding or pregnant women.
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