Pseudoephedrine is quite effective in relieving nasal problems originating from cold, allergies and hay fever. Pseudoephedrine falls into the group of medicines popularly know as sympathomimetic agents mainly applied as nasal decongestants. The relation between Pseudoephedrine and rebound headaches is quite significant.
Pseudoephedrine is used in products such as Sudafed. Pseudoephedrine is also used in cooking meth. Pseudoephedrine is not a problem when used in medication (i. e. , allergy medications).
Pseudoephedrine is something that you can get somewhat addicted to. Its what makes good night time medicines so good dulling sinus/flu pains and allowing your body to relax. Its hard to find by itself however.
Pseudoephedrine is a stimulant and can be addictive, but this is not a common problem. The biggest problem with pseudoephedrine is that it is used in the manufacture of methamphetamines. Many pharmacies are now keeping medications with pseudoephedrine behind the counter or limiting the amount that customers can buy in order to prevent the creation of methamphetamines.
Its useful in cough medicine eyedrops and multiple other over the counter medicines. It a stimulant akin to turbo charged caffeine when reformulated for Meth.