Yes, aspirin can cause hearing loss, but the risk depends almost entirely on how much you take. At high doses (roughly 2,000 mg per day or more), aspirin is a well-documented cause of temporary hearing changes and tinnitus. At the low doses most people use for heart protection or the occasional headache, the evidence shows no measurable effect on hearing.
How Much Aspirin Affects Hearing
The relationship between aspirin and hearing loss is dose-dependent, meaning higher doses cause bigger shifts. A systematic review in Otolaryngology Head and Neck Surgery found that doses under 4,000 mg per day caused mild hearing threshold changes of about 4 to 13 decibels. That’s roughly the difference between a whisper and a quiet library. At doses between 4,000 and 10,000 mg per day, the shifts were far more dramatic, ranging from 15 to over 100 decibels.
Statistically significant hearing worsening showed up at doses as low as 1,950 mg per day. For context, a standard over-the-counter aspirin tablet is 325 mg, so you’d need to take at least six tablets daily to reach that threshold. People taking 6,000 to 8,000 mg per day for conditions like rheumatoid arthritis experienced hearing losses of 20 to 40 decibels, enough to make normal conversation difficult to follow.
These high doses are uncommon today but were once standard for managing chronic inflammatory conditions. Most people now encounter aspirin at far lower levels.
Low-Dose Aspirin Appears Safe for Hearing
If you take a daily baby aspirin (81 mg) or a standard 325 mg tablet for heart protection, the current evidence is reassuring. A study published in JAMA Network Open followed healthy adults aged 70 and older who took 100 mg of aspirin daily for three years. It found no discernible effect on the progression of hearing loss compared to those taking a placebo. There were no differences in hearing thresholds at any point during the trial.
The systematic review noted the same gap: no studies have evaluated hearing effects at doses of 325 mg or less per day. That means there’s no audiometric data suggesting these common doses pose any risk. Clinical studies also found no signs of ear toxicity at blood levels of aspirin consistent with standard anti-platelet doses (under 10 mg/L in the bloodstream).
What Aspirin Does Inside the Ear
Your inner ear contains tiny structures called outer hair cells that amplify sound vibrations. These cells rely on a motor protein to physically change shape in response to incoming sound waves, fine-tuning your ability to hear quiet or complex sounds. Aspirin’s active component (salicylate) interferes with this motor protein by displacing a molecule that normally binds to it. The result is that the hair cells can’t amplify sound as effectively, and your hearing sensitivity drops.
This effect is most pronounced at low and high frequencies, with mid-range hearing relatively spared. It also explains why aspirin-related hearing loss tends to feel like everything gets quieter and harder to distinguish rather than cutting out entirely.
Symptoms to Recognize
The hallmark early symptom is tinnitus, typically described as a continuous, high-pitched ringing of mild to moderate loudness. This often appears before noticeable hearing loss and serves as a warning signal that the dose is affecting your ears.
Beyond ringing, people taking high-dose aspirin describe three distinct changes: a general drop in hearing sensitivity (sounds seem quieter), difficulty understanding speech even when you can hear it, and hypersensitivity to loud noises. That last symptom, where everyday sounds feel uncomfortably sharp or startling, often accompanies the tinnitus and hearing loss rather than replacing it. Symptoms typically develop over the first few days of high-dose treatment and may fluctuate, level off, or partially improve even while still taking the medication. With extremely large single doses, symptoms can appear within hours.
Recovery After Stopping
The good news is that aspirin-related hearing loss is generally reversible. Symptoms typically resolve within a few days of stopping the medication or reducing the dose. This is one of the key distinctions between aspirin and other drugs that damage hearing permanently, like certain antibiotics or chemotherapy agents that destroy hair cells outright. Aspirin temporarily disables the hair cells’ amplification ability without killing them, so once the drug clears your system, function returns.
The hearing loss tracks closely with blood levels of salicylate. As blood concentrations approach anti-inflammatory levels (150 to 300 mg/L), hearing loss of 30 to 40 decibels can develop. Once blood levels drop after stopping aspirin, hearing recovers in parallel. There is no strong evidence that short-term high-dose use causes lasting damage, though the data on decades-long high-dose use is limited.
Who Faces Higher Risk
Several factors can make someone more susceptible to aspirin’s effects on hearing. Reduced kidney function is the most significant, because aspirin is eliminated through the kidneys. When kidney function is impaired, the drug accumulates to higher levels in the blood, amplifying its impact on the inner ear. Aspirin itself can also reduce kidney function temporarily, which compounds the problem.
Older adults face elevated risk for several overlapping reasons: declining kidney and liver function, slower drug metabolism, greater sensitivity to side effects, and a higher likelihood of taking multiple medications. Taking aspirin alongside other drugs known to affect hearing, such as certain diuretics or antibiotics, can create a compounding effect. People with preexisting hearing loss may also notice aspirin’s effects more readily, since they have less hearing reserve to absorb even a small shift in sensitivity.
The dose threshold of roughly 2,700 mg per day is a useful benchmark, but individuals with these risk factors may experience effects at somewhat lower doses. If you’re taking high-dose aspirin for an inflammatory condition and notice ringing in your ears, that symptom is worth reporting promptly, as it typically signals the dose is high enough to affect your hearing.