Sedating antihistamines for
For example: For other conditions, specific antihistamines may be used.For example, cyclizine and promethazine teoclate are used for feeling sick (nausea) and being sick (vomiting), not for hay fever.(Mucosae are membranes lining body cavities such as your mouth, nose and digestive tract.) If your skin is damaged or your immune system detects a foreign substance, histamine is released from mast cells.The histamine binds to special sites (receptors) on other cells, called H1 receptors.
Specialised cells and chemicals, which defend your body, can now get access to the area.
The brain has several key areas which control vomiting.
It is thought that antihistamines block H1 receptors in the area of the brain which creates nausea in response to chemicals in the body.
While both types of medicine block the actions of histamine, they work on different receptors in different systems of the body.
Some of these medicines are available to buy over the counter from your pharmacist. These medicines come in a variety of forms, as mentioned above.
Antihistamines work by physically blocking the H1 receptors, stopping histamine from reaching its target.