<unk>  is a stimulant, but it is well known for shrinking swollen nasal mucous membranes, so it is often used as a decongestant. It reduces tissue hyperemia, edema, and nasal congestion commonly associated with colds or allergies. Other beneficial effects may include increasing the drainage of sinus secretions, and opening of obstructed Eustachian tubes. The same vasoconstriction action can also result in hypertension, which is a noted side effect of<unk> .<unk>  can be used either as oral or as topical decongestant. Due to its stimulating qualities, however, the oral preparation is more likely to cause adverse effects, including urinary retention. According to one study,<unk>  may show effectiveness as an antitussive drug (suppression of cough).<unk>  is indicated for the treatment of nasal congestion, sinus congestion and Eustachian tube congestion.<unk>  is also indicated for vasomotor rhinitis, and as an adjunct to other agents in the optimum treatment of allergic rhinitis, croup, sinusitis, otitis media, and tracheobronchitis.<unk>  is also used as a first-line prophylactic for recurrent priapism. Erection is largely a parasympathetic response, so the sympathetic action of<unk>  may serve to relieve this condition. Treatment for urinary incontinence is an off-label use ("unlabeled use") for these medications.
Pseudoephedrine
Ephedrine
Theobromine
Tesofensine
Benzoctamine
Bethanechol
Butalbital
Guaifenesin