Benjamin Zohar, NCACIP

Can You Take Baclofen With Ibuprofen? Safety, Interactions & Side Effects

Benjamin Zohar, NCACIP -

Quick answer: Baclofen and ibuprofen may sometimes be used together because they work through different mechanisms, and current prescribing information does not identify ibuprofen as a specific contraindicated baclofen interaction. However, baclofen can cause drowsiness, dizziness and CNS depression, while ibuprofen can cause gastrointestinal bleeding, kidney injury and cardiovascular complications.

Last updated: September 26, 2026.

Medical reviewed by Brandon McNally, RN

Safety note: The absence of a specifically listed baclofen-ibuprofen interaction does not mean the combination is appropriate for everyone. Baclofen is cleared primarily through the kidneys and can cause significant sedation. Ibuprofen can affect the kidneys, stomach, cardiovascular system and blood pressure. Other medications, alcohol and underlying medical conditions can substantially change the risk.

Key Takeaways

  • Baclofen and ibuprofen are different medication classes. Baclofen is a centrally acting antispastic medication; ibuprofen is a nonsteroidal anti-inflammatory drug, or NSAID.
  • Current baclofen prescribing information does not identify ibuprofen as a specific contraindicated interaction.
  • Baclofen commonly causes drowsiness, dizziness and weakness and can impair driving or other activities requiring alertness.
  • Alcohol and other CNS depressants can increase baclofen-related sedation and impairment.
  • Baclofen is primarily eliminated through the kidneys. Reduced kidney function can increase baclofen exposure and adverse effects.
  • Ibuprofen can cause gastrointestinal bleeding, kidney injury, fluid retention and cardiovascular complications.
  • Baclofen should not always be stopped abruptly. Sudden discontinuation has been associated with hallucinations and seizures.
  • A randomized clinical trial did not find additional one-week benefit from adding baclofen to ibuprofen for acute nonradicular low-back pain.

Table of Contents

Can You Take Baclofen and Ibuprofen Together?

Baclofen and ibuprofen may sometimes be used together when a healthcare professional determines that both medications are appropriate. Current baclofen prescribing information does not list ibuprofen as a specifically contraindicated or named interaction.

The medications work very differently:

  • Baclofen is a centrally acting antispastic medication used primarily to reduce spasticity associated with conditions such as multiple sclerosis and spinal cord disease.
  • Ibuprofen is an NSAID used to reduce pain, inflammation and fever.

The fact that they have different mechanisms explains why they may sometimes appear in the same medication regimen. It does not mean both are necessary for every type of muscle or back pain.

A patient may tolerate ibuprofen but be unusually sensitive to baclofen because of sedation, renal impairment or another CNS depressant. Conversely, a patient who tolerates baclofen may have a reason to avoid ibuprofen because of kidney disease, gastrointestinal bleeding, heart disease or another NSAID-related risk.

For comparison with other muscle-relaxant combinations, see Can You Take Methocarbamol With Ibuprofen? Safety, Side Effects & Risks and Can You Take Tizanidine With Ibuprofen? Safety, Interactions & Side Effects.

Baclofen vs. Ibuprofen at a Glance

Baclofen and ibuprofen differ in both their therapeutic role and major safety concerns. Baclofen's important issues include CNS depression, renal clearance and withdrawal, while ibuprofen's major concerns include gastrointestinal, renal and cardiovascular toxicity.

Feature Baclofen Ibuprofen
Drug class Centrally acting antispastic / muscle relaxant NSAID
Availability Prescription OTC and prescription
Primary labeled role Spasticity associated with conditions such as multiple sclerosis and spinal cord disease Pain, inflammation and fever
Drowsiness Common and clinically important Not a primary drug-class effect
Kidney considerations Primarily eliminated through kidneys; impaired renal function can increase exposure NSAIDs can reduce renal blood flow and cause kidney injury
GI bleeding Not a defining baclofen risk Important NSAID risk
Cardiovascular risk Not the defining drug-class risk NSAID cardiovascular warning applies
Alcohol concern Additive CNS depression and sedation Heavy alcohol use can increase GI bleeding concern
Abrupt discontinuation concern Yes — withdrawal reactions can occur No comparable withdrawal syndrome
Federal controlled substance No No

What Is Baclofen?

Baclofen is a prescription antispastic medication used primarily to reduce spasticity associated with neurologic conditions such as multiple sclerosis and spinal cord disease.

According to the current baclofen tablet prescribing information, baclofen may help relieve flexor spasms, pain associated with spasticity, clonus and muscular rigidity.

The label also makes an important distinction: baclofen tablets are not indicated for ordinary skeletal-muscle spasm resulting from rheumatic disorders.

That matters because people sometimes group baclofen together with every medication commonly called a “muscle relaxer,” even though its labeled clinical role differs from medications such as methocarbamol.

Common or clinically important baclofen effects include:

  • drowsiness;
  • dizziness;
  • weakness;
  • fatigue;
  • confusion;
  • nausea;
  • constipation;
  • coordination problems in some patients.

The MedlinePlus baclofen drug guide also provides patient-focused information about baclofen use and adverse effects.

What Is Ibuprofen?

Ibuprofen is a nonsteroidal anti-inflammatory drug used to reduce pain, inflammation and fever. It is available in both OTC and prescription strengths.

The current ibuprofen prescribing information carries boxed warnings for serious cardiovascular thrombotic events and gastrointestinal bleeding, ulceration and perforation.

Ibuprofen is commonly used for:

  • back pain;
  • muscle aches;
  • headache;
  • dental pain;
  • menstrual pain;
  • arthritis-related pain;
  • fever.

OTC availability should not be interpreted as meaning that ibuprofen has little medical risk. Dose, duration, age, kidney function, cardiovascular disease, GI history and other medications all affect safety.

Do Baclofen and Ibuprofen Interact?

Current baclofen prescribing information does not identify ibuprofen as a specific contraindicated or named drug interaction. The larger clinical issue is the independent risk contributed by each medication.

Baclofen may require additional caution when someone:

  • has reduced kidney function;
  • uses alcohol;
  • takes opioids;
  • takes benzodiazepines;
  • takes sedating antihistamines or sleep medications;
  • has epilepsy;
  • is particularly susceptible to dizziness, weakness or falls.

Ibuprofen may require additional caution when someone:

  • has kidney disease;
  • has previous stomach ulcers;
  • has experienced gastrointestinal bleeding;
  • has heart disease or heart failure;
  • has uncontrolled hypertension;
  • takes anticoagulants or antiplatelet medications;
  • takes another NSAID;
  • is pregnant.

Clinical Pearl: Baclofen and ibuprofen create an unusual renal-safety question because baclofen depends heavily on renal elimination while ibuprofen can impair kidney function. A person with reduced kidney function may therefore require more careful review of both medications even though they do not have a classic direct drug-drug interaction.

Compare this with tizanidine and ibuprofen, where CYP1A2 interactions and hypotension are more prominent concerns, and methocarbamol and ibuprofen, where CNS sedation is a major practical consideration.

Can You Take Baclofen and Ibuprofen at the Same Time?

Current prescribing information does not establish a universal requirement to separate baclofen and ibuprofen by a specific number of hours.

Whether taking them at the same time is appropriate depends on factors such as:

  • why baclofen was prescribed;
  • the baclofen dose and frequency;
  • ibuprofen strength and duration;
  • kidney function;
  • gastrointestinal history;
  • cardiovascular disease;
  • other sedating medications;
  • alcohol use;
  • other NSAID use.

Patients should follow their actual prescription and OTC label instructions rather than creating a new combined timing schedule based on a general interaction article.

Can You Take Baclofen With Ibuprofen 800 mg?

Ibuprofen 800 mg is prescription-strength ibuprofen and should be used according to the prescribing clinician's directions.

The absence of a specifically listed baclofen-ibuprofen interaction does not mean an 800 mg ibuprofen dose is appropriate for every patient.

Prescription-strength NSAID treatment warrants particular caution in people with:

  • kidney disease;
  • dehydration;
  • high blood pressure;
  • heart disease;
  • heart failure;
  • previous gastrointestinal bleeding;
  • peptic ulcer disease;
  • anticoagulant use;
  • antiplatelet therapy;
  • older age;
  • another NSAID already in the medication list.

Kidney function deserves special consideration because reduced renal function can also increase baclofen exposure.

Does Baclofen Cause Drowsiness or Affect Driving?

Yes. Drowsiness is one of the most frequently reported baclofen adverse effects, and the medication can impair activities requiring alertness.

The baclofen prescribing information reports transient drowsiness as a common adverse reaction and cautions patients about driving or operating dangerous machinery until they know how baclofen affects them.

Other potentially impairing effects include:

  • dizziness;
  • weakness;
  • fatigue;
  • confusion;
  • coordination problems;
  • blurred vision in some patients.

Ibuprofen does not usually produce the same degree of CNS depression, so sedation experienced while taking the combination should not automatically be blamed on a unique interaction between the two drugs.

For another article focused on medication-related CNS impairment, see ZzzQuil and Alcohol: Risks, Side Effects, and Why Mixing Them Can Be Dangerous.

Can You Drink Alcohol With Baclofen and Ibuprofen?

Alcohol can worsen baclofen-related CNS depression and may also increase concern about ibuprofen-related gastrointestinal bleeding.

Current baclofen labeling cautions that its central nervous system effects may be additive with alcohol and other CNS depressants.

Alcohol plus baclofen may increase:

  • drowsiness;
  • dizziness;
  • weakness;
  • poor coordination;
  • impaired judgment;
  • risk of falls or accidents.

Regular or substantial alcohol use can also increase concern about NSAID-associated gastrointestinal bleeding.

For more information about alcohol plus sedating medications, see ZzzQuil and Alcohol: Risks, Side Effects, and Why Mixing Them Can Be Dangerous.

Why Does Kidney Function Matter With Baclofen?

Kidney function is particularly important with baclofen because the drug is excreted primarily unchanged through the kidneys.

The current baclofen label states that the drug should be used cautiously in impaired renal function and that dosage reduction may be necessary.

Reduced kidney clearance can increase baclofen exposure and potentially increase adverse effects such as:

  • marked drowsiness;
  • confusion;
  • weakness;
  • poor coordination;
  • respiratory depression in severe toxicity;
  • altered consciousness.

This becomes especially relevant when ibuprofen is involved because NSAIDs can reduce renal blood flow in susceptible patients.

Clinical Pearl: In a patient with chronic kidney disease or acute dehydration, the important question is not only whether baclofen “interacts” with ibuprofen. It is whether renal function is sufficient for safe baclofen clearance and whether NSAID exposure could worsen kidney function.

What Are the Stomach and Kidney Risks of Ibuprofen?

Ibuprofen can cause serious gastrointestinal and renal adverse effects, particularly in higher-risk patients or with greater NSAID exposure.

Current ibuprofen prescribing information warns about gastrointestinal bleeding, ulceration and perforation that can occur during NSAID use.

Gastrointestinal risks

Risk may be greater in people who:

  • have had ulcers;
  • have previously experienced GI bleeding;
  • are older;
  • take anticoagulants;
  • take antiplatelet medication;
  • take corticosteroids;
  • use another NSAID;
  • consume substantial amounts of alcohol;
  • use NSAIDs for longer periods.

Kidney risks

NSAIDs can impair renal perfusion and worsen kidney function in susceptible patients.

Risk can be greater with:

  • existing kidney impairment;
  • dehydration;
  • heart failure;
  • liver disease;
  • older age;
  • diuretic therapy;
  • ACE inhibitors;
  • angiotensin receptor blockers.

Because baclofen also relies strongly on kidney clearance, renal impairment deserves particular attention when the medications are used in the same patient.

What Other Medications Should Be Checked?

A medication-safety review should include the full medication list rather than only baclofen and ibuprofen.

Medications and substances relevant to baclofen

  • alcohol;
  • opioids;
  • benzodiazepines;
  • sleep medications;
  • sedating antihistamines;
  • other muscle relaxants;
  • other CNS depressants.

Medications relevant to ibuprofen

  • naproxen;
  • aspirin;
  • other NSAIDs;
  • anticoagulants;
  • antiplatelet drugs;
  • corticosteroids;
  • ACE inhibitors;
  • angiotensin receptor blockers;
  • diuretics;
  • other medicines affecting renal function or bleeding risk.

Patients should also check combination cold, flu, headache and pain products because an OTC product may already contain an NSAID or sedating ingredient.

For a broader medication-class overview, see Classification of drugs, UTC for healthcare professionals.

For additional discussion of sedating OTC medication, see Is ZzzQuil Addictive? Safety, Dependence, and Long-Term Use.

Can Baclofen Cause Withdrawal?

Yes. Abrupt discontinuation of baclofen can cause clinically important withdrawal reactions, which is a major difference between baclofen and ibuprofen.

Current oral baclofen labeling reports that abrupt withdrawal has been associated with:

  • hallucinations;
  • seizures;
  • increased spasticity;
  • neuropsychiatric symptoms in some patients.

Modern baclofen labeling recommends reducing the dose gradually when baclofen is discontinued unless a serious adverse reaction requires another approach.

A patient taking baclofen regularly should therefore not interpret symptom improvement as a reason to suddenly stop the medication without discussing the plan with the prescriber.

Safety distinction: Ibuprofen does not produce the same baclofen withdrawal syndrome. The discontinuation issue comes from baclofen, not from a direct interaction between the two medications.

Can Baclofen and Ibuprofen Be Used During Pregnancy?

Pregnancy requires clinician-directed review for both medications, and ibuprofen has specific FDA restrictions beginning around 20 weeks of pregnancy.

The FDA recommends avoiding NSAIDs at approximately 20 weeks of pregnancy or later unless specifically advised by a healthcare professional because NSAIDs can cause fetal kidney dysfunction and reduced amniotic fluid.

After approximately 30 weeks, additional fetal cardiovascular concerns make NSAID avoidance especially important.

Baclofen also requires individualized risk-benefit assessment during pregnancy. Oral baclofen exposure late in pregnancy has been associated with neonatal withdrawal after delivery.

Pregnant patients should therefore not start, stop or combine these medications based only on an online interaction checker.

Does Adding Baclofen to Ibuprofen Improve Acute Back Pain?

A randomized clinical trial found that adding baclofen to ibuprofen did not improve one-week functional outcomes or pain more than ibuprofen plus placebo in adults with acute nonradicular low-back pain.

A 2019 randomized, double-blind trial published in Annals of Emergency Medicine enrolled 320 emergency-department patients with acute nonradicular low-back pain.

All participants received ibuprofen and were randomized to receive:

  • placebo;
  • baclofen;
  • metaxalone; or
  • tizanidine.

At one week, improvements in functional disability and pain were similar among the groups. The investigators concluded that adding baclofen, metaxalone or tizanidine to ibuprofen did not improve functional outcomes or pain more than ibuprofen plus placebo.

Question What the study found Important limitation
Does adding baclofen to ibuprofen improve one-week function? No meaningful additional benefit was demonstrated Study involved acute nonradicular low-back pain in ED patients
Does baclofen always lack benefit for spasticity? No — this trial did not study baclofen's labeled neurologic spasticity indications Back pain and neurologic spasticity are different clinical problems
Does the trial prove nobody should ever receive both drugs? No Treatment still depends on indication and individual clinical factors

Evidence interpretation: This study is particularly useful because it tested baclofen and ibuprofen together directly. It does not mean baclofen lacks effectiveness for its approved spasticity indications; it means routine addition of baclofen to ibuprofen did not improve one-week outcomes in this specific acute low-back-pain population.

The same trial also evaluated tizanidine, discussed separately in Can You Take Tizanidine With Ibuprofen? Safety, Interactions & Side Effects.

Baclofen and Ibuprofen: Myth vs. Fact

Myth Fact
Baclofen and ibuprofen are basically the same type of pain medicine. No. Baclofen is an antispastic medication, while ibuprofen is an NSAID.
If there is no listed direct interaction, the combination has no important risks. No. Baclofen and ibuprofen each have significant independent adverse effects.
Baclofen is intended for every ordinary pulled muscle or back spasm. The oral baclofen label is focused on neurologic spasticity and states that it is not indicated for skeletal-muscle spasm resulting from rheumatic disorders.
Baclofen cannot affect driving because it is not an opioid. Baclofen commonly causes drowsiness, dizziness and weakness and can impair alertness.
Alcohol is harmless with baclofen. Baclofen's CNS-depressant effects may be additive with alcohol and other CNS depressants.
Kidney disease only matters for ibuprofen. No. Baclofen is also primarily eliminated by the kidneys, so impaired renal function can increase baclofen exposure.
You can stop baclofen abruptly because it is not a controlled substance. Abrupt baclofen withdrawal has been associated with hallucinations and seizures.
Adding baclofen to ibuprofen always improves acute back pain. A randomized 2019 trial did not find additional one-week benefit for acute nonradicular low-back pain.

When to Seek Medical Help

Prompt medical evaluation is appropriate when severe sedation, altered consciousness, significant kidney symptoms, gastrointestinal bleeding or severe withdrawal symptoms occur.

Seek urgent or emergency medical help for symptoms such as:

  • difficulty breathing;
  • inability to wake;
  • loss of consciousness;
  • seizures;
  • severe confusion or hallucinations;
  • vomiting blood;
  • black or tarry stools;
  • severe abdominal pain;
  • chest pain;
  • sudden weakness or difficulty speaking;
  • markedly reduced urination;
  • rapidly worsening swelling or shortness of breath;
  • severe allergic reaction.

Patients should contact the prescribing clinician or pharmacist for excessive drowsiness, persistent dizziness, worsening weakness, concerns about kidney function or questions about stopping baclofen.

Frequently Asked Questions About Baclofen and Ibuprofen

Can you take baclofen and ibuprofen together?

They may sometimes be used together, and current baclofen prescribing information does not identify ibuprofen as a specific contraindicated interaction. However, baclofen can cause sedation and depends heavily on kidney clearance, while ibuprofen carries gastrointestinal, kidney and cardiovascular risks. The complete medical history still matters.

Can you take baclofen and Advil together?

Advil contains ibuprofen, so this is the same medication combination. Patients should check the Advil label, avoid taking another NSAID at the same time unless directed and consider kidney, stomach and cardiovascular risk factors.

Can you take baclofen with ibuprofen 800 mg?

Ibuprofen 800 mg is prescription strength and should be used according to a clinician's directions. The absence of a specifically listed baclofen interaction does not mean prescription-strength ibuprofen is appropriate for every patient, especially when kidney disease, GI bleeding or cardiovascular risk is present.

Do baclofen and ibuprofen need to be taken hours apart?

Current prescribing information does not establish a universal required separation interval between baclofen and ibuprofen. Patients should follow the actual medication directions and ask a pharmacist or prescriber when timing, doses or other medications create uncertainty.

Does baclofen contain ibuprofen?

No. Baclofen and ibuprofen are separate medications. Baclofen is a prescription antispastic medication, while ibuprofen is an NSAID used to reduce pain, inflammation and fever.

Is baclofen a painkiller?

Baclofen is not an NSAID or conventional analgesic. It is used primarily to reduce spasticity associated with certain neurologic conditions. Reducing spasticity may also reduce pain associated with spasms in appropriate patients, but that is different from ibuprofen's anti-inflammatory mechanism.

Does baclofen make you sleepy?

Yes. Drowsiness is a common baclofen adverse effect. Dizziness, weakness and fatigue can also occur. Patients should determine how baclofen affects them before driving or operating machinery.

Can you drink alcohol while taking baclofen?

Baclofen's CNS-depressant effects may be additive with alcohol. Combining them can increase drowsiness, dizziness, poor coordination and impairment. Alcohol can also increase concern about gastrointestinal bleeding when ibuprofen is being used.

Why is kidney disease important with baclofen?

Baclofen is eliminated primarily through the kidneys. Reduced renal function can decrease baclofen clearance and increase exposure. Because ibuprofen can also affect kidney function, patients with renal impairment deserve additional review before using both medications.

Can baclofen be stopped suddenly?

Not always. Abrupt baclofen discontinuation has been associated with hallucinations and seizures, and current labeling recommends gradual dose reduction when possible. Patients taking baclofen regularly should discuss discontinuation with their prescriber.

Is baclofen better than tizanidine with ibuprofen?

Neither combination is universally better. Baclofen and tizanidine have different indications and safety profiles. Baclofen raises particular concerns about renal clearance and withdrawal, while tizanidine has important hypotension and CYP1A2-interaction issues. See Can You Take Tizanidine With Ibuprofen? Safety, Interactions & Side Effects.

Is baclofen better than methocarbamol with ibuprofen?

Neither is universally better. Methocarbamol is typically used as an adjunct for acute painful musculoskeletal conditions, while oral baclofen is primarily indicated for neurologic spasticity. See Can You Take Methocarbamol With Ibuprofen? Safety, Side Effects & Risks.

Does baclofen plus ibuprofen work better for acute back pain?

Not necessarily. A randomized 2019 emergency-department trial found that adding baclofen to ibuprofen did not improve one-week function or pain more than ibuprofen plus placebo for acute nonradicular low-back pain. That finding should not be generalized to baclofen's approved treatment of neurologic spasticity.

Source Verification

This article was checked against current U.S. oral baclofen and ibuprofen prescribing information, FDA NSAID pregnancy guidance, National Library of Medicine patient information and peer-reviewed clinical evidence.

The article distinguishes the absence of a specifically listed baclofen-ibuprofen drug interaction from the independent safety risks of each medication. Particular emphasis is placed on baclofen's renal elimination, CNS depression and withdrawal risk and on ibuprofen's renal, gastrointestinal and cardiovascular effects.

The acute-back-pain section is based on a randomized trial that directly studied ibuprofen plus baclofen. That trial involved acute nonradicular low-back pain and should not be interpreted as evidence against baclofen's labeled role in neurologic spasticity.

References

  1. U.S. National Library of Medicine, DailyMed. Baclofen Tablets USP: Prescribing Information .
  2. U.S. National Library of Medicine, DailyMed. Ibuprofen Tablets: Prescribing Information .
  3. U.S. National Library of Medicine, MedlinePlus. Baclofen: Drug Information .
  4. U.S. Food and Drug Administration. Nonsteroidal Anti-Inflammatory Drugs (NSAIDs): Avoid Use in Pregnancy at 20 Weeks or Later .
  5. Friedman BW, Irizarry E, Solorzano C, et al. A Randomized, Placebo-Controlled Trial of Ibuprofen Plus Metaxalone, Tizanidine, or Baclofen for Acute Low Back Pain . Annals of Emergency Medicine. 2019;74(4):512-520.

Last updated: September 26, 2026.

About the Author

Benjamin Zohar, NCACIP is a Nationally Certified Advanced Clinical Intervention Professional and ISSUP network moderator specializing in addiction intervention, treatment navigation and emerging substance-use risks. His educational work published through ISSUP on counterfeit medications, fentanyl exposure and concentrated 7-hydroxymitragynine has been cited or referenced by GoodRx, The Washington Post, WIRED and Newsweek.

Medical reviewed by  Brandon McNally, RN 

Medical disclaimer: This article is intended for educational and public-health purposes. It does not provide individualized medical advice, diagnosis or a tapering schedule. Do not start, stop or alter a prescription medication without consulting a qualified healthcare professional. Call emergency services for seizures, difficulty breathing, loss of consciousness, severe confusion or other life-threatening symptoms.

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