Uses of Sinemet CR: An Overview
Sinemet® CR (
carbidopa-levodopa CR) is a long-acting prescription
Parkinson's disease medication. The drug is also approved to treat Parkinson-like symptoms due to manganese poisoning, carbon monoxide poisoning, or
encephalitis (infection or inflammation of the brain).
Sinemet CR tablets are designed to slowly release the medication over four to six hours. It provides a more steady level of
carbidopa and levodopa in the blood, compared to immediate-release Sinemet.
Parkinson's disease results from the loss of neurons in a region of the brain that controls movement. This creates a shortage of the neurotransmitter (brain-signaling chemical) known as dopamine, causing movement problems that are characteristic of Parkinson's disease. The exact
cause of Parkinson's disease is not known at this time.
Although
early symptoms of Parkinson's disease may be subtle, people will eventually develop a characteristic tremor (trembling or shaking) of a limb, especially when the body is at rest. As the disease progresses, symptoms may worsen and new ones may appear.
Although Sinemet CR is a very effective Parkinson's medication, its benefits are often limited to about five years of use (sometimes longer, sometimes shorter), when Sinemet CR may start to cause intolerable side effects and may begin to lose its effectiveness. It is not clear at this time why this might occur; some people think it is simply a manifestation of the worsening of the disease that normally happens over time.