Allergic symptoms occur when the body receives a foreign substance that can stimulate cells to release histamine. Histamine is a substance found in cells throughout the body, including the nervous system, digestive tract, and immune system. When histamine is released, it causes itching, red rashes on the skin, and may cause bronchospasm, difficulty breathing in the respiratory tract. If it affects the digestive tract, there will be stomach pain, nausea, and vomiting.
There are currently two types of antihistamines.
Antihistamines that cause drowsiness are the original antihistamines, but they are still widely available on the market. The reason this drug makes you drowsy is because the substances in the drug are absorbed into the bloodstream to the brain, which has a sedative effect, causing drowsiness. In addition, some people may experience side effects of the drug, such as swollen hands and feet, swollen body, urinary retention, ทางเข้า ufabet, and constipation, because the body has absorbed too much of the drug. It also works quickly and wears off quickly, so we have to take several pills a day.
Non-drowsy antihistamines are newly develop drugs that work directly against allergens. They are absorb into the brain less than traditional drugs or not at all, so they do not cause drowsiness. There is also a lower chance of side effects. In addition, although the drug works slower than traditional drugs, it wears off slowly, so you only need to take one or two pills per day.
Cautions
- Antihistamines should not be take with alcoholic beverages. As this will increase the effectiveness of the sedative, making you more drowsy.
- If symptoms do not improve or become chronic and require continuous dietary intake for several weeks, see a doctor.
The best way to treat allergies, what are we allergic to and how to avoid allergens. Taking antihistamines every time does not solve the root cause. Sometimes when we have a runny nose, fever, itchy body. It may not be cause by allergies but from other causes.