U.S. doctors online nowAsk doctors free
Silver Spring, MD
A 65-year-old male asked:

Why is sinemet (carbidopa and levodopa) cr is inferior to regular sinement in terms of strength even though they carry the same mg in terms of dose for parkinsons?

2 doctor answers4 doctors weighed in
Dr. Philip Miller
A Verified Doctoranswered
Family Medicine 47 years experience
Time release: Time released or controlled release Sinemet (carbidopa and levodopa) is not inferior- the drug is just released more slowly into the system.
Dr. Eric Weisman
Neurology 36 years experience
Different timing: CR is sustained release. Regular lasts only a few hours and tends to have more peaks and troughs. One can use both. Regular is given 3 to 4 times a day.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership

Related questions

A 65-year-old male asked:
1 doctor answer1 doctor weighed in
A 38-year-old member asked:
2 doctor answers7 doctors weighed in
Last updated Nov 28, 2017


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.