Doxylamine and phenylephrine and Parcopa

• Generic Name: doxylamine / phenylephrine
• Dosage Forms: n.a.
• Other Brand Names: Poly Hist Forte

Doxylamine is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose.

Phenylephrine is a decongestant that shrinks blood vessels in the nasal passages. Dilated blood vessels can cause nasal congestion (stuffy nose).

Doxylamine and phenylephrine is a combination medicine used to treat runny or stuffy nose, sneezing, itching, watery eyes, and sinus congestion caused by allergies, the common cold, or the flu.

Doxylamine and phenylephrine may also be used for purposes not listed in this medication guide.

• Generic Name: carbidopa / levodopa
• Dosage Forms: tablet, orally disintegrating
• Other Brand Names: Parcopa, Rytary, Sinemet, Sinemet CR, Duopa

Parcopa is a combination medicine used to treat symptoms of Parkinson's disease, such as muscle stiffness, tremors, spasms, and poor muscle control. Parkinson's disease may be caused by low levels of a chemical called dopamine (DOE pa meen) in the brain.

Levodopa is converted to dopamine in the brain. Carbidopa helps prevent the breakdown of levodopa before it can reach the brain and take effect.

Parcopa is also used to treat Parkinson symptoms caused by carbon monoxide poisoning or manganese intoxication.

Parcopa may also be used for purposes not listed in this medication guide.