baclofen vs orphenadrine
Side-by-side comparison of baclofen and orphenadrine Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Lioresal, Gablofen
Norflex
Baclofen is a muscle relaxant. It helps to relieve muscle spasms and stiffness.
Orphenadrine (Norflex) is a muscle relaxant that can help relieve discomfort from painful muscle problems. It should be used with rest and physical therapy.
Baclofen is used to treat muscle spasticity (stiffness) caused by multiple sclerosis. It can help with muscle spasms, pain, and rigidity. It may also help people with spinal cord injuries or diseases. Baclofen is not for muscle spasms caused by arthritis or other rheumatic problems.
This medicine treats discomfort caused by painful muscle and bone problems. It is meant to be used along with rest, physical therapy, and other treatments. It can help relieve pain and stiffness in your muscles.
Baclofen works by affecting the nerves in your spinal cord. It decreases the signals that cause your muscles to tighten. This helps to relieve muscle stiffness and spasms.
Orphenadrine works by relaxing your muscles. It also has some pain-relieving effects. It mainly works by blocking certain nerve signals in the body.
- • Drowsiness
- • Dizziness
- • Weakness
- • Nausea
- • Dry mouth
- • Drowsiness
- • Dizziness
- • Nausea
- • Vomiting
- Tiredness 6,148
- Pain 5,657
- Medicine not working 5,452
- Fall 5,421
- Feeling sick to your stomach 4,595
- Pain 64
- Feeling sick to your stomach 51
- Feeling worried or nervous 45
- Medicine not working 45
- Feeling tired 45
If you stop taking baclofen suddenly, you may experience withdrawal symptoms. Talk to your doctor before stopping this medication.
You should not take this medicine if you have glaucoma, a blockage in your stomach or small intestine, peptic ulcers that are getting smaller, an enlarged prostate, problems with your bladder, mega-esophagus, or myasthenia gravis. Do not take this medicine if you are allergic to it.
Tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. It is not known if baclofen will harm your unborn baby. Baclofen can pass into breast milk.
It is not known if this medicine will harm your unborn baby. Talk to your doctor if you are pregnant, plan to become pregnant, or are breastfeeding.
How to Read This baclofen vs orphenadrine Comparison
baclofen is classified in the GABA-B Agonist (Muscle Relaxant) drug class, while orphenadrine sits within the Muscle Relaxant / Analgesic 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, baclofen has 27,273 submissions while orphenadrine has 250. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. 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 baclofen and orphenadrine — 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.