carbidopa/levodopa vs probenecid
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Side-by-side comparison of carbidopa/levodopa and probenecid. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
minor Known Drug Interaction
These include probenecid, cholestyramine, and some antibiotics (e.g., erythromycin, rifampicin, ampicillin and chloramphenicol).
Sinemet
Benemid
This medicine contains carbidopa, levodopa, and entacapone. It is used to treat Parkinson's disease.
No summary available.
This medicine treats Parkinson's disease. It can help when other medicines stop working as well near the end of a dose. It can also replace other medicines containing similar ingredients.
Information not available.
Levodopa turns into dopamine in your brain, helping to control movement. Carbidopa helps levodopa get to your brain. Entacapone helps levodopa work longer.
Information not available.
- • Uncontrolled movements
- • Diarrhea
- • Nausea
- • Belly pain
- • Vomiting
- • Diarrhea
- • Nausea
- • Yeast infection of the vagina
- • Headache
- • Vomiting
- Fall 4,293
- Seeing or hearing things that are not there 3,733
- Shaking 3,257
- Uncontrolled movements 2,903
- Death 2,727
- Diarrhoea 76
- Dyspnoea 52
- Adenovirus Infection 47
- Asthenia 47
- Fatigue 46
This medicine can make you fall asleep suddenly, even when you feel awake. Be careful when driving or doing other activities where you need to be alert. Stopping this medicine suddenly can cause serious problems like fever and confusion.
No specific warnings noted.
This medicine may harm your unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is not known if this medicine passes into breast milk.
No pregnancy information available.
How to Read This carbidopa/levodopa vs probenecid Comparison
carbidopa/levodopa is classified in the Dopamine Precursor Combination drug class, while probenecid sits within the Uricosuric Agent class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, carbidopa/levodopa has 16,913 submissions while probenecid has 268. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known minor interaction flagged in FDA labeling, attributed to probenecid can interfere with how your body clears levodopa, potentially causing the drug to build up in your system.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot represent individual circumstances. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This registry does not provide medical, treatment, substitution, or medication-change directions for carbidopa/levodopa or probenecid.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.