The effect of taking allergic drugs is 1. At present, most oral antiallergic drugs commonly used in clinic are antihistamines. Histamine can cause telangiectasia, increased permeability, smooth muscle spasm and increased secretion activity, which can lead to congestion, edema, nasal congestion, dyspnea and other symptoms. Antihistamines can inhibit the above-mentioned effects, but they also have central inhibition and anticholinergic effects, which can cause side effects such as drowsiness, dry mouth, dry eyes, blurred vision, constipation and dysuria.
2. When taking antiallergic drugs, if there are symptoms of dry eyes and dry mouth, you should drink more boiled water (1000 ml or more). At the same time, a humidifier can be used to keep the room moist. During taking medicine, it is recommended to wear contact lenses as little as possible, and not to watch TV, use mobile phones and computers for a long time.
3. If the symptoms of dry eyes and dry mouth are particularly obvious and affect daily life, it is recommended to switch to other drugs under the guidance of a doctor. If dry eye still appears after dressing change, artificial tears can be dropped according to the doctor's advice to relieve it.
4. It should be reminded that antiallergic drugs may also induce glaucoma and affect prostate function. Therefore, glaucoma, prostatic hypertrophy, asthma, chronic obstructive pulmonary disease, severe liver disease and elderly patients should be used with caution, and it is not recommended for pregnant women and lactating women.
There are 1 reasons that affect the curative effect of allergic drugs, and the right allergic drugs are not selected.
Although allergic diseases are common, the etiology and pathogenesis may be different. Different kinds of antiallergic drugs have their own mechanisms of action and antiallergic characteristics, and the emphasis of treating allergic diseases is also different. If you don't choose the right anti-allergic drugs during the medication, you won't achieve the expected effect.
2. Long-term continuous use of the same antiallergic drug may lead to drug resistance.
When patients take the same antiallergic drug for a long time, the body's sensitivity to this drug will gradually decrease, resulting in drug resistance. Taking this antiallergic drug again will not achieve the previous therapeutic effect. In addition, all anti-allergic drugs have side effects, and long-term use is harmful to human body. Therefore, do not use the same anti-allergic drug for a long time.
3. Some allergic diseases can't be treated by only one kind of antiallergic drug.
Some allergic problems cannot be solved by an antiallergic drug. For some allergies with severe symptoms, doctors can consider using two different types of antiallergic drugs in combination, which can not only enhance the therapeutic effect, but also prevent drug resistance. When the condition is stable and the symptoms improve, stop using one drug first, and then stop using another drug under the guidance of a doctor.
4, anti-allergic drugs can also cause allergies.
Most drugs can cause allergic reactions, and antiallergic drugs are no exception. Drugs themselves or naturally decay, and additives, impurities, pollutants and metabolites in drugs can all become allergens. Many people have allergic reactions in the process of taking antiallergic drugs, and when the original symptoms are aggravated, they often mistakenly think that it is caused by insufficient dose, so they increase the dose without authorization, which makes the condition worse.
How to choose an antiallergic drug? Antihistamine is an antiallergic drug, which is convenient to administer and effective for many allergic diseases. At present, there are three generations of antihistamines on the market, and each generation has its own advantages and disadvantages.
In terms of curative effect, the third generation antihistamines can be the first choice. Compared with the first and second generation drugs, this generation of anti-allergic drugs has no side effects such as drowsiness, dry mouth and constipation, and has the least damage to the liver and central nervous system. If there is acute allergy, it is better to take it in time, and it is best for patients with repeated allergies to take it before going to bed.
Generally speaking, the second generation antihistamines are more affordable, with few side effects, no obvious side effects such as dry mouth and fatigue, and the price is about half cheaper than that of the third generation antihistamines. However, the second-generation drugs are prone to some adverse reactions such as drowsiness and constipation for patients with certain constitutions.
People should use traditional first-generation antihistamines with caution. Although these drugs are cheap, they have great side effects and many contraindications, and are not suitable for working people who need close attention such as driving and aerial work.