Do not take this medication if you have used an MAO inhibitor such as isocarboxazid (Marplan), phenelzine (Nardil), or tranylcypromine (Parnate) within the past 14 days.
You should not take this medication if you are allergic to carbidopa (Lodosyn), entacapone (Comtan), or levodopa (Larodopa), or if you have narrow-angle glaucoma, unusual skin lesions, or a history of skin cancer.
Tell your doctor about all of your medical conditions, especially heart disease, high blood pressure, asthma or other breathing problems, liver or kidney disease, a hormonal disease, an ulcer, glaucoma, or mental illness. Also tell your doctor about all the medications you use.
It may take up to several weeks of using carbidopa, entacapone, and levodopa before your symptoms improve. For best results, keep using the medication as directed. Talk with your doctor if your symptoms do not improve after a few weeks of treatment. Also tell your doctor if the effects of this medication seem to wear off quickly in between doses.
You may have increased sexual urges, unusual urges to gamble, or other intense urges while taking this medication. Talk with your doctor if you believe you have any intense or unusual urges while taking carbidopa, entacapone, and levodopa.
Do not stop using carbidopa, entacapone, and levodopa without first talking to your doctor.