sinemet cr

Foods & drinks to be careful with

Well-established interactions for this medicine’s drug class, summarized from public health authorities. General information, not medical advice — always confirm with your pharmacist or the label.

• High-protein meals

  Watch out for: meat, fish, eggs, dairy, beans and other protein-heavy foods — and protein shakes.

  Levodopa is an amino acid, and it crosses the gut wall on the same transporter that carries dietary amino acids. Eat a lot of protein at the same time and the two compete: the Sinemet label states that absorption of levodopa may be impaired in some people on a high-protein diet.

  What to do: This is about TIMING, not about eating less protein — you need protein. Many people take levodopa 30 to 60 minutes before a meal, and some are advised to shift most of their protein to the evening. Do not restrict protein on your own; ask your neurologist how to space doses around meals.

  Source: SINEMET (carbidopa and levodopa) — FDA label, Clinical Pharmacology (DailyMed)

How long does Carbidopa and Levodopa stay in your body?

The elimination half-life of carbidopa and levodopa is about 50 minutes (extended to about 1.5 hours when taken with carbidopa) — the time it takes the body to clear about half of it. As a rule of thumb, a medicine is mostly gone after roughly 4 to 5 half-lives, though this varies from person to person with age and kidney or liver function. Per the FDA label, levodopa's plasma half-life is about 50 minutes on its own, but it is increased to about 1.5 hours when given with carbidopa (as in Sinemet) — the standard combination that prevents peripheral breakdown of levodopa. Levodopa is effectively a prodrug: it is converted to dopamine in the body/brain (unlike dopamine itself, it crosses the blood-brain barrier). Because the half-life is so short, the drug clears within a few hours, which is why Parkinson's dosing is frequent; adding a COMT inhibitor such as entacapone further prolongs levodopa exposure. Half-life reflects how the body clears the drug, not a drug-test detection window.

This is general information, not medical advice. It doesn’t tell you when a drug test would read negative (tests detect substances for different, often longer, windows) or when it’s safe to take another dose — ask your pharmacist or prescriber. Source: SINEMET (carbidopa and levodopa) tablet — FDA label via DailyMed.

Frequently asked questions

How is Sinemet CR rated?

pharmaranks gives Sinemet CR a composite score of 3.5 out of 5, currently based on 1 weighted source (FDA regulatory recall-safety data weighted highest). See our methodology at /how-we-rate.

How much does Sinemet CR cost?

Nobody can tell you what you will pay — your price is set by your insurer's formulary, your deductible and the pharmacy's markup, and none of those are published. What IS published is what the pharmacy paid to acquire it: about $20.52 for 30, per the CMS NADAC survey. Treat that as the floor, not the quote — ask the pharmacist for the cash price as well as your copay, because for cheap generics the cash price often wins.

Is there a coupon or discount for Sinemet CR?

pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Sinemet CR. To pay less, ask your prescriber or pharmacist whether a generic equivalent exists, check the manufacturer's copay/savings card and patient-assistance program, and compare a pharmacy discount card against your insurance copay. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.

Who makes Sinemet CR?

Sinemet CR is marketed by Organon. You can see Organon's full profile, rating, and other products on pharmaranks.

Is Sinemet CR a brand-name or generic drug?

Sinemet CR is a brand-name product with the active ingredient Carbidopa and Levodopa. Lower-cost generic equivalents containing Carbidopa and Levodopa are available — ask your pharmacist.

Is Sinemet CR available over the counter?

No. Sinemet CR is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.

What forms does Sinemet CR come in?

Sinemet CR is currently marketed as tablet, extended release, per the FDA's National Drug Code Directory.

Is Sinemet CR FDA-registered?

Sinemet CR is on record with the U.S. FDA under application number NDA019856. You can verify this on its official FDA label.

Has Sinemet CR been recalled by the FDA?

Sinemet CR has no FDA recalls recorded under its own application in the openFDA enforcement database. Its recall-safety score reflects its manufacturer's overall recall record. This is general reference, not medical advice — check the FDA recall database for the latest alerts.

Is Sinemet CR safe?

There's no single safe-or-not verdict. pharmaranks gives Sinemet CR a recall-safety score of 70/100, based on its FDA recall history (no recalls under its own FDA application) — not an efficacy or side-effect rating. Review its FDA-label side effects and warnings before use, and always consult a licensed professional.