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You may then need further treatment, for example with steroids and antihistamines, to reduce the allergic response.
You can buy some of these from pharmacies without a prescription.
At present, four different histamine receptors are known: Further research into these receptors may produce antihistamines with different medical applications and maybe even one which is extremely specific to H1 and may have fewer side effects than current drugs.
Allergy Relief Products It's well worthwhile making sure your children eat a healthy diet, if you want to protect them from asthma.
Hence they are sometimes also referred to as sedating histamines.
Their action on the brain means that they have a sedating effect.
If you have a severe allergic reaction, your symptoms may include: This type of severe reaction is called anaphylaxis. Anaphylaxis is commonly triggered by an allergy to wasp and bee stings, latex, and certain foods, including eggs, fish, shellfish, cow’s milk and nuts. If you have anaphylaxis, it’s important that you get medical help immediately, as it can be very serious and you need an adrenaline injection.You should also avoid alcohol if you are on a sedating antihistamine as they potentiate the effect of alcohol on the nervous system.Half a pint of beer will have the same effects as two or three pints and you might drive as if you were over the alcohol limit. These are older drugs which are rather non-specific in their action. Many antihistamines are available over the counter. There are two types of antihistamine – first generation (sedating) and second generation (non-sedating). Antihistamines come in different formulations: tablet, capsule, syrup, nasal spray, gel, cream and lotion.
It is part of the International Study on Allergies and Asthma in Childhood (ISAAC) a unique, worldwide project set up in 1991 to investigate asthma, rhinitis and eczema in children because of concern that these conditions were increasing in western and developing countries.