PTCE Top 200 · #87

Baclofen

Lioresal

Baclofen is the generic name for the brand-name drug Lioresal. It is a skeletal muscle relaxant (gaba-b agonist) used to treat muscle spasticity. On the PTCE Top 200 drug list, Baclofen ranks #87 and is one of the most frequently tested cns/psych medications — commonly quizzed on its brand–generic pair, drug class, and key side effects.

Generic nameBaclofen
Brand name(s)Lioresal
Drug classSkeletal muscle relaxant (GABA-B agonist)
Class groupCNS/Psych
Common usemuscle spasticity
DEA scheduleUnscheduled
AvailabilityPrescription only (Rx)

What is Baclofen used for?

Antispastic agent used to treat spasticity (often from multiple sclerosis or spinal cord disease/injury).

What drug class is Baclofen?

Baclofen is a Skeletal muscle relaxant (GABA-B agonist) in the CNS/Psych group. Knowing the class is the fastest way to predict its uses, side effects, and the brand↔generic pairs the PTCE tests.

Common side effects of Baclofen

Major interactions

Is Baclofen a controlled substance?

No. Baclofen is not a federally controlled substance (it is unscheduled by the DEA).

How to remember Baclofen (PTCE mnemonic)

Lio-RES-al RESolves spasticity — baclo-FEN is a GABA-B agonist. Drowsy, weakness; NEVER stop abruptly (hallucinations, seizures, rhabdo).
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PTCE exam tip

Baclofen is a muscle relaxant for spasticity — taper to stop, since abrupt withdrawal can cause seizures (a key counseling point).

Baclofen FAQ

What is the brand name for Baclofen?

The brand name for Baclofen is Lioresal.

What is Baclofen used for?

Baclofen is used to treat muscle spasticity. Antispastic agent used to treat spasticity (often from multiple sclerosis or spinal cord disease/injury).

What drug class is Baclofen?

Baclofen is a Skeletal muscle relaxant (GABA-B agonist) (CNS/Psych group).

Is Baclofen a controlled substance?

No. Baclofen is not a federally controlled substance (it is unscheduled by the DEA).

Related drugs in the CNS/Psych group

Drill Baclofen the way the PTCE asks it

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Last reviewed June 25, 2026. Educational use only — not medical advice. Verify clinical specifics with your pharmacist or a current label source such as DailyMed. RxReflex is not affiliated with or endorsed by the Pharmacy Technician Certification Board (PTCB).