Decongestants

Cathine, also known as -norpseudoephedrine or as (+)-norpseudoephedrine, is a psychoactive drug of the phenethylamine and amphetamine groups which acts as a stimulant. Along with cathinone, it is found naturally in Catha edulis (khat), and contributes to the overall effects of the plant. Cathine has approximately 7 to 10% of the potency of amphetamine.

Phenylpropanolamine (PPA), sold under many brand names, is a sympathomimetic agent used as a decongestant and appetite suppressant. It was once common in prescription and over-the-counter cough and cold preparations. The medication is taken orally.

Naphazoline is a medicine used as a decongestant, and a vasoconstrictor added to eye drops to relieve red eye. It has a rapid action in reducing swelling when applied to mucous membranes. It is a sympathomimetic agent with marked alpha adrenergic activity that acts on alpha-receptors in the arterioles of the conjunctiva to produce constriction, resulting in decreased congestion.

A decongestant, or nasal decongestant, is a type of pharmaceutical drug that is used to relieve nasal congestion in the upper respiratory tract. The active ingredient in most decongestants is either pseudoephedrine or phenylephrine (the latter of which has disputed effectiveness). Intranasal corticosteroids can also be used as decongestants and antihistamines can be used to alleviate runny nose, nasal itch, and sneezing.

Methylhexanamine (also known as methylhexamine, 1,3-dimethylamylamine, 1,3-DMAA, dimethylamylamine, and DMAA; trade names Forthane and Geranamine) is an indirect sympathomimetic drug invented and developed by Eli Lilly and Company and marketed as an inhaled nasal decongestant from 1948 until it was voluntarily withdrawn from the market in the 1980s.

Propylhexedrine, sold under the brand name Benzedrex among others, is an alkylamine primarily utilized as a topical decongestant. Its main indications are relief of congestion due to colds, allergies, and allergic rhinitis. Propylhexedrine was first used medically in 1949, with the release of Benzedrex by Smith, Kline & French, and it has been used, mainly within the United States, since then.

Tramazoline is a chemical that is used in the form of tramazoline hydrochloride in nasal decongestant preparations. It is an α-adrenergic receptor agonist that inhibits secretion of nasal mucus.

Corbadrine, sold under the brand name Neo-Cobefrine and also known as levonordefrin and α-methylnorepinephrine, is a catecholamine sympathomimetic used as a topical nasal decongestant and vasoconstrictor in dentistry in the United States. It is usually used in a pre-mixed solution with local anesthetics, such as mepivacaine.

Mephentermine, sold under the brand name Wyamine among others, is a sympathomimetic medication which was previously used in the treatment of low blood pressure but is mostly no longer marketed. It is used by injection into a vein or muscle, by inhalation, and by mouth.

Tuaminoheptane (, ; brand names Heptin, Heptadrine, Tuamine; also known as tuamine and 2-aminoheptane) is a sympathomimetic agent and vasoconstrictor which is used as a nasal decongestant. It has also been used as a stimulant.

Iproheptine, also known as '''N-isopropyl-1,5-dimethylhexylamine or N-isopropyloctodrine and sold under the brand names Metron and Susat''', is a nasal decongestant which has been marketed in Japan. It is described as a vasoconstrictor and antihistamine. The drug is available over-the-counter in Japan.

Cafaminol (brand names Rhinetten, Rhinoptil), also known as methylcoffanolamine, is a vasoconstrictor and anticatarrhal of the methylxanthine family related to caffeine which is used as a nasal decongestant in Germany. It was introduced in 1974 and was still in use as of 2000.

Cyclopentamine (trade names Clopane, Cyclonarol, Cyclosal, Cyklosan, Nazett, Sinos, among others) is a sympathomimetic and vasoconstrictor drug of the alkylamine family and related to the arylalkylamines. Cyclopentamine was indicated in the past as an over-the-counter (OTC) medication for use as a nasal decongestant, notably in Europe and Australia, but has now been largely discontinued.