Combining Baclofen and Morphine is a major interaction and should generally be avoided without close medical supervision.
Patients may experience profound sedation, respiratory depression, hypotension, and impaired psychomotor function. This can manifest as excessive drowsiness, confusion, dizziness, and difficulty breathing, potentially leading to falls, aspiration, and life-threatening respiratory arrest. The combination significantly increases the risk of overdose symptoms.
Mechanism: Morphine, an opioid analgesic, exerts its effects primarily through mu-opioid receptor agonism, leading to central nervous system (CNS) depression. Baclofen, a gamma-aminobutyric acid (GABA)-B receptor agonist, also causes CNS depression by hyperpolarizing neurons and reducing neurotransmitter release. The co-administration of these agents results in an additive depressant effect on the CNS.
Baclofen vs. Morphine
Compare Baclofen and Morphine: mechanism of action, indications, side effects, cost, and which may be right for you.
Drug A
Baclofen
Baclofen (Intrathecal)
Skeletal Muscle Relaxants
RxDrug B
Morphine
Opium Tincture Deodorized
Opioid Analgesics
RxQuick Comparison
| Category | Baclofen | Morphine |
|---|---|---|
| Drug Class | Skeletal Muscle Relaxants | Opioid Analgesics |
| Rx Status | Rx | Rx |
| Generic Available | No | No |
| Typical Cost | $1,500–$5,000+/month | $200–$600/month |
Baclofen Overview
Baclofen (Intrathecal) is a medication delivered directly into the fluid surrounding your spinal cord to help manage severe muscle stiffness and spasms, known as spasticity. It works by relaxing your muscles, which can improve movement and reduce discomfort caused by conditions like spinal cord injury or multiple sclerosis. This treatment is typically used when other baclofen forms haven't been ef...
Full Baclofen guide →Morphine Overview
MORPHINE (brand name: Opium Tincture Deodorized) is a Opioid Analgesics. INDICATIONS AND USAGE Opium tincture is useful for the treatment of diarrhea.
Full Morphine guide →Approved Uses (Indications)
Baclofen
INDICATIONS AND USAGE Baclofen injection (intrathecal) is indicated for use in the management of severe spasticity. Patients should first respond to a screening dose of intrathecal baclofen prior to consideration for long term infusion via an implantable pump. For spasticity of spinal cord origin, chronic infusion of baclofen injection (intrathecal) via an implantable pump should be reserved for patients unresponsive to oral baclofen therapy, or those who experience intolerable CNS side effects at effective doses. Patients with spasticity due to traumatic brain injury should wait at least one …
Morphine
INDICATIONS AND USAGE Opium tincture is useful for the treatment of diarrhea.
Side Effects
Baclofen
Morphine
Cost Comparison
Baclofen
$1,500–$5,000+/month
As this is a brand-only, specialty medication, costs can be very high. Explore manufacturer patient assistance programs or speak with your doctor about potential financial aid options.
Morphine
$200–$600/month
As there is no generic available, patients should look for manufacturer patient assistance programs or discount cards to help reduce the cost of Opium Tincture Deodorized.
Compare prices for Baclofen and Morphine
Check real-time pharmacy prices before you fill — free, no account needed.
Medical Disclaimer
The information on RxGuide is intended for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician, pharmacist, or other qualified health provider with any questions you may have regarding a medical condition or medication. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.