Medications

Detailed Information on Each Medication

Acetaminophen (Tylenol) — A Surprising Research Finding

Acetaminophen (Tylenol, Panadol) has been recommended as a first-line treatment for back pain for decades. It is widely used, generally safe, and familiar to most people.

However, recent high-quality research has produced a surprising finding:

• For chronic low back pain specifically, acetaminophen on its own did not show the level of benefit that was expected
• Multiple systematic reviews have found limited evidence of meaningful improvement compared to placebo

This does not mean acetaminophen is a bad medication. It remains effective for acute pain and fever, and may be used as part of a broader treatment plan. But whether it is doing enough on its own for chronic low back pain is worth revisiting with your doctor.

Important: Never stop a medication on your own. Talk to your doctor about whether your current medications are the best match for your type of pain.

NSAIDs (Anti-Inflammatory Medications) — Modest Benefit, Real Risks

NSAIDs include both over-the-counter options like ibuprofen (Advil, Motrin) and naproxen (Aleve), and prescription options like celecoxib (Celebrex) and diclofenac.

What the research shows:

• Multiple reviews have found only small improvements in pain — the benefit exists, but it is modest
• There is some benefit, but it is small

Risks — especially for older adults:

Over-the-counter availability: Ibuprofen and naproxen are widely available without a prescription, which can create a false sense of safety. Over-the-counter does not mean risk-free — the same GI, kidney, and heart risks apply, especially with regular use.

For older adults: Topical NSAIDs (applied to the skin) carry fewer risks to the stomach, kidneys, and heart compared to pills.

Duloxetine (Cymbalta) — The Only Approved Antidepressant for Chronic Low Back Pain

Duloxetine was originally developed as an antidepressant, but research showed it also helps with chronic pain.

• The only antidepressant with FDA approval for chronic low back pain (60 mg/day)
• Improves both pain and physical function
• Particularly helpful when chronic low back pain occurs alongside depression or anxiety

What to know:

• It can take 2 to 4 weeks before you notice any benefit
• Common side effects include nausea, dizziness, and drowsiness
• Do not stop suddenly — your doctor will taper the dose gradually to avoid withdrawal symptoms

Some patients worry when they hear "antidepressant." Duloxetine is used here because it modulates how pain signals are processed in the nervous system — it is a different purpose from treating depression.

Pregabalin (Lyrica) and Gabapentin (Neurontin) — For Nerve Pain

A significant proportion of chronic low back pain cases involve a neuropathic component — pain caused by nerve dysfunction rather than tissue damage. This type of pain often feels like tingling, burning, or electric shocks.

• Pregabalin (Lyrica): Widely prescribed for nerve pain worldwide
• Gabapentin (Neurontin): A related medication that is commonly used in the US and UK. It works through a similar mechanism and is often tried as an alternative to pregabalin

Both medications may help with the nerve-related component of chronic low back pain, though the evidence is stronger for conditions like diabetic neuropathy and postherpetic neuralgia than for low back pain specifically.

Key side effects (especially for older adults):

• Dizziness and drowsiness are the most common
• Unsteadiness that increases fall risk — be cautious at night, especially getting up for the bathroom
• Start at a low dose and increase gradually

Tramadol — When NSAIDs Are Not Enough

Tramadol is classified as a "weak opioid" but also works through a second mechanism: serotonin and norepinephrine reuptake inhibition — similar to duloxetine. This dual action is part of what makes it effective for chronic pain. It is often prescribed as the next step when NSAIDs do not provide sufficient relief.

• Moderate pain relief has been reported in clinical studies
• May be helpful when low back pain occurs with depressive symptoms
• Available as an immediate-release tablet, extended-release formulation, and in some countries as a combination with acetaminophen (e.g., Ultracet in the US). Specific formulations vary by region — ask your doctor or pharmacist about what is available where you live

What to know:

• Nausea is common when starting — your doctor may prescribe anti-nausea medication alongside it
• Constipation and dizziness are also common
• Carries risk of dependence with long-term use — your body may develop tolerance, meaning you need more for the same effect
• Never stop suddenly — withdrawal symptoms can occur; your doctor will reduce the dose gradually
• Do not increase the dose on your own — if the medication feels less effective, talk to your doctor first
• For older adults, doctors typically start at a lower dose
• Classified as a controlled substance in many countries (Schedule IV in the US)

Tramadol can be an effective tool when used appropriately, but it is not intended for indefinite long-term use without regular review. Work with your doctor to reassess its role in your treatment plan periodically.

Opioids — Long-Term Use Is Not Recommended

Research has found:

• Opioids provide only small improvements in pain (high-certainty evidence)
• The modest benefit does not outweigh the significant risks for most patients

Key message: Opioids provide limited benefit for chronic low back pain while carrying substantial risks of side effects and dependence. Long-term use is not recommended by current guidelines.

The opioid crisis context: The US, Canada, and other countries have experienced devastating consequences from widespread opioid prescribing for chronic pain. In response, the CDC's 2022 Clinical Practice Guideline emphasizes:

• Non-opioid therapies (exercise, physical therapy, certain medications) should be tried first
• If opioids are used, they should be at the lowest effective dose for the shortest needed duration
• The risks of long-term opioid therapy for chronic pain frequently outweigh the benefits

These guidelines reflect a broader shift in pain medicine: moving away from opioids as a default treatment for chronic pain.

Topical Treatments — A Safer Choice, Especially for Older Adults

Topical medications are applied directly to the painful area and carry fewer risks of systemic side effects.

Available options:

• Diclofenac gel (Voltaren): An NSAID available over the counter. Provides local anti-inflammatory relief with far less impact on the stomach, kidneys, and heart compared to oral NSAIDs
• Lidocaine patches (Lidoderm): A prescription numbing patch applied to the painful area
• Capsaicin cream: Available over the counter. Derived from chili peppers, it works by desensitizing pain nerve fibers over time. Can cause a burning sensation initially

For older adults, topical treatments are often among the safest pain management options available.

Muscle Relaxants — Not Effective for Chronic Back Pain

Muscle relaxants — including cyclobenzaprine (Flexeril), tizanidine (Zanaflex), and baclofen — may help with acute muscle spasms, but:

• Research shows they have no long-term benefit for chronic low back pain
• The most common side effects are drowsiness and dry mouth
• In older adults, they increase the risk of falls

Cannabis and CBD — Limited Evidence

As cannabis becomes legal in more jurisdictions (many US states, Canada, Australia, parts of Europe), patients increasingly ask about its role in chronic pain management.

What the research currently shows:

• Evidence for cannabis-based medicines in chronic low back pain specifically is limited and inconclusive
• Some studies suggest modest pain relief for chronic pain in general, but the quality of evidence is low
• CBD (cannabidiol) products vary widely in quality, dosing, and regulation
• Side effects can include dizziness, fatigue, and changes in appetite

Cannabis and CBD are areas of active research, but there is not yet enough high-quality evidence to make clear recommendations for chronic low back pain. If you are considering these products, discuss them with your doctor — especially if you take other medications, as interactions are possible.