What are Decongestants?

Decongestants are a type of drug that reduces sinus and nasal passages. They are designed to alleviate the symptoms they experience when a person has a cold or suffers from nasal allergies. Most decongestants are available to buy via counter (OTC); However, some are only available with a prescription.

When a cold virus or allergen is absorbed by the nose, the body produces a substance known as histamine. Histamine increases blood flow to the nasal area and causes blood vessels and the surrounding nasal tissue to increase. This swelling lights the nasal area and stimulates the production and leakage of mucus and excess fluid. Swollen membranes also reduce the amount of space in the nose and the nasal cavity, where it can enter and the air can enter and get out, creating a sense of nitivity commonly associated with cold or allergy.

Decongestants work by stimulating receptors in the sympathetic nervous system, causing reduction of blood vessels and nasal tissue. This in turn helps to reduce mucus production and excess body fluid. WITHThe lower swelling leads to the nasal passages to feel more open and reduce the symptoms of overload.

Many decongestants are combined with a type of drug known as an antihistamine. Antihistamines calculate the effect of histamine on the body. The antihistamine therefore helps to reduce the cause of the swelling of the nasal tissues, while the decongestant reduces the symptoms of nose swelling.

Decongestants are usually produced in two forms - oral and current - both are just as effective. Oral decongestants usually occur in the form of a tablet, capsule or liquid. They usually take about 30 minutes to be manifested and can be effective up to 24 hours. It should be noted that the oral decongestant causes the blood vessels to reduce throughout the body, perhaps to increase individual pressure. Those with high blood pressure or a history of heart disease should consult their health care provider before receiving a decongestant.

local deCongestants are usually found in the form of a drop or spray and are applied directly to the eyes or nose of the user. Local medicines begin to operate in about 10 minutes and can be effective for up to 12 hours. Local decongestants, especially nasal sprays, should not use it for more than two to three days, as long -term use could lead to a reflective effect. When this happens, the nasal passages are unable to remain open without continuing the use of the nasal spray.