meperidine vs safinamide
Side-by-side comparison of meperidine and safinamide. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
major Known Drug Interaction
7.2 Opioid Drugs Because serious, sometimes fatal reactions have been precipitated with concomitant use of opioid drugs (e.g., meperidine and its derivatives, methadone, propoxyphene, or tramadol) and MAOIs, including selective MAO-B inhibitors, concomitant use of these drugs is contraindicated [see Warnings and Precautions (5.2) ] .
Recommendation: Avoid taking these medications together under any circumstances.
Demerol
Xadago
Meperidine is a strong pain medicine. It is used to treat severe, acute pain when other pain medicines are not strong enough.
Safinamide (Xadago) is a drug used with levodopa/carbidopa to treat Parkinson's disease. It helps reduce "off" episodes, where symptoms like stiffness and slowness return.
Meperidine is used to manage acute pain that is severe enough to need an opioid pain medicine. It is for use when other treatments do not work well enough. Meperidine should not be used for chronic, long-lasting pain. Taking meperidine for a long time may increase the risk of seizures.
Safinamide is used to treat Parkinson's disease. It is for people who take levodopa/carbidopa but still have "off" times. During these times, Parkinson's symptoms like stiffness and slow movement come back.
Meperidine is an opioid agonist. It works by binding to receptors in the brain and spinal cord. This reduces the feeling of pain.
Safinamide is a MAO-B inhibitor. It works by blocking an enzyme in the brain that breaks down dopamine. This helps increase the amount of dopamine available, which can improve motor control.
- • Lightheadedness
- • Dizziness
- • Sleepiness
- • Nausea
- • Vomiting
- • Uncontrolled movements (dyskinesia)
- • Falls
- • Feeling sick to your stomach (nausea)
- • Trouble sleeping (insomnia)
- Allergic reaction to the drug 3,248
- Pain 1,250
- Feeling sick to your stomach 1,133
- Excessive sweating 821
- Skin rash 775
- Fall 154
- Seeing or hearing things that are not there 142
- Uncontrolled movements 137
- Trouble walking 93
- Death 90
Meperidine has a boxed warning. This means it has serious risks. These risks include: Medication errors that can cause overdose, addiction, abuse, and misuse, life-threatening respiratory depression, accidental ingestion (especially by children) can cause a fatal overdose, dangerous effects when taken with benzodiazepines or other CNS depressants, and neonatal opioid withdrawal syndrome. Make sure you read the Medication Guide.
Safinamide can cause or worsen high blood pressure. It can also cause serotonin syndrome, a dangerous condition, if taken with certain other medicines. Some people taking safinamide have fallen asleep suddenly during normal activities. Safinamide may also cause or worsen uncontrolled movements, hallucinations, and compulsive behaviors. Stopping safinamide suddenly can cause serious withdrawal symptoms.
Taking meperidine for a long time during pregnancy can cause withdrawal symptoms in the newborn. Meperidine is not recommended during or right before labor because it can cause breathing problems in the baby.
Safinamide may harm an unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is not known if safinamide passes into breast milk, so talk to your doctor if you are breastfeeding.
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How to Read This meperidine vs safinamide Comparison
meperidine is classified in the Opioid Analgesic drug class, while safinamide sits within the MAO-B Inhibitor 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, meperidine has 7,227 submissions while safinamide has 616. 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 major interaction flagged in FDA labeling, attributed to this combination can cause a severe, life-threatening reaction by interfering with how the brain handles certain chemicals.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between meperidine and safinamide - always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.