Side effects of promethazine

Promethazine belongs to a group of phenothiazine drugs As an antihistamine, it hinders the natural production of chemical histamine in vivo The function of promethazine changes with the chemical activity of brain This is the first generation of H1 receptor antagonists and antiemetics It can prevent sickness from causing nausea and vomiting, or sports disease Promethazine is usually given to patients before surgery because it helps them improve their sleep quality and helps relieve post-operative pain or nausea In addition, the drug is often used to treat allergic symptoms such as sneezing, itching, runny nose, cough, tears and itchy rashes It has the effect of anti acetylcholine, anti emetic and anti motion sickness Other benefits of promethazine include: common side effects of promethazine include: long-term consumption of promethazine can cause skin pigmentation or darkening, so the body's exposure to sunlight should be limited Patients undergoing treatment should take sun protection measures to avoid direct exposure to the sun It cannot be used to treat asthma symptoms, pneumonia, or other lower respiratory infections In addition, the side effects of promethazine include blurred vision, color change, pupil enlargement and night vision difficulties Liver function damage is rare, but if you take promethazine when you are pregnant, it is easy to lead to neonatal jaundice It blocks dopamine receptors, which in turn induces an increase in prolactin levels, resulting in the ability of a woman's breasts to produce milk even when they are not pregnant Promethazine can also cause weight gain, missed menstrual periods, breast enlargement, loss of libido, impotence, and priapism Promethazine should not be used in children under 2 years old because it inhibits breathing and may cause death It cannot be used with propylthiouracil because it reduces the number of white blood cells and increases the risk of infection Promethazine should also not be taken with any monoamine oxidase inhibitor antidepressants because it increases the risk of extrapyramidal symptoms Other side effects of the drug include severe restlessness, inability to fall asleep, nausea, palpitations, and so on.