Over the Counter Drugs

These are used for symtpoms like runney nose, watery eyes and sneezing..think common cold symtpoms

These work by by binding to H1 receptors. They block histamine from working. They aslo bind to some muscarinic receptors to prevent anticholinergic receptros. This dries us the mucus and decreases mucus secretion.

Diphenhydramine, which is also known as bendadryl

They are able to cross the blood brain barrier and bind to H1 receptors on the brain to induce sleepiness.

These work by mimicing the sympathetic nervous system. They cause vasconstriction and decrease nasal draining.

Anything with the name ephedrine. Ephedrine..phenyephedrine...psedoephedrine

The side effects for the nasla spray is your body can build up a tolerance to it. With oral...you have to be careful bc they stimulate the sympathetic system.. you need to be careful with if you have high blood pressue

-Ephedrine...Phenylepherdine or Psuedoepherdine.

These are used for productive coughs... They help to increase respirtatory secretions.

They stimulate the GI tract in order to promote the respiratory tract to increase phlem.

Water is the best expectorant...An example is Guaifensin

They are used for the dry couch.. They work by blocking the cough center in the medulla by binding to teh NMDA receptors.

Dextromethorphan

These drugs can surpress the respiratoty system if you over dose....cause dizziness and GI problems.

Used to treat mucles aches, body aches fever, sore throat.