It can also be used to dilate the pupil and raise blood pressure.
It is known as phenylephrine adrenergic agonist, meaning that it binds to a specific stress hormone receptors, stimulating a response. In this role, and phenylephrine linking adrenergic receptors in the bronchioles in the lungs and cause them to dilate. By opening these structures, the accumulated mucus can be removed from the lower respiratory tract. Often phenylephrine combined with other medications, such as painkillers, as in the copy "pocket" of many drugs without a prescription, Related molecule, called pseudoephedrine, was used more commonly in these applications was phenylephrine, until it became a molecule useful in the illicit production of amphetamines. Phenylephrine is not effective as a drug because it can not partially broken down in the digestive tract before it is absorbed than ever. Such as adrenergic agents, effective phenylephrine in commenting pupil, known as mydriasis . Phenylephrine is used during eye examination at the ophthalmologist or optometrist fo...