Why do antihistamines make you drowsy?

We use antihistamines to relieve cold and allergy symptoms. Runny nose, sneezing, itchy face, itchy eyes, irritated throat or allergic skin reactions, redness, itching or hives Many of the symptoms we call "allergies" are due to the body's sensitivity to certain substances. Histamine, a substance that causes allergic reactions, comes out.
Antihistamines, also called antihistamines (antihistamines) are currently divided into two groups.

The traditional group such as paracetamol (Chlorpheniramine), and Benadryl. (Benadryl), bromfenamine (Bromphenamine), and hydroxyzine (Hydroxyzine). This group of drugs can enter the brain while in the bloodstream. Causes depression of the nervous system, leading to drowsiness

The new group is an antihistamine that does not cause drowsiness. Non-sedating antihistamines, such as cetirizine, loratadine and fexofenadine, differ from the first group in that they rarely penetrate the brain. Therefore, the effect of drowsy drugs is minimal. It can also work for a long time. Therefore, the drugs are taken only once a day. This group of drugs can treat allergic reactions. However, it may relieve runny nose, motion sickness and seasickness less than the first group.
It is important that in addition to taking antihistamines correctly, we should avoid the causes of allergic reactions. And always stay healthy
Antibiotics or antibacterial drugs This is a medication that we may get from the doctor or pharmacist when we are sick. And always be told to continue taking the pills until they run out.
But have you ever wondered why we need to use up all of our antibiotics? What happens if you can't take them all?
Many people may have experience with taking these medications for things like colds, sore throats and bacterial infections. Skin lesions and infections include eye mets, bronchitis, and cystitis. There are many different types of disinfectants. Each group can treat different infections in different areas.
The important thing is to continue taking the medicine until the end of the day. Or stop eating because symptoms improve This is the main cause of ineffective treatment and the risk of drug resistance

causing the body to accept an insufficient amount of medication to eliminate the infection until the disease or infection is cured This allows the infection to multiply and cause a relapse.

The reason why it is important to take all the pills continuously is because each time an infection occurs, the patient's body becomes infected enough to cause the disease. Immediately after infection, the patient does not experience any symptoms. It may take some time while the infection begins to multiply. The duration until symptoms appear varies depending on the nature of each infection.