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Medications That Can Cause Hallucinations - What Patients Should Know

Could medications be causing hallucinations? Learn which drugs may trigger hallucinations, warning signs, and how your pharmacist at Realo Drugs can help.

When medications affect the mind

Hallucinations can be unsettling. Seeing things that aren’t there, hearing voices in an empty room—these experiences can leave anyone feeling uneasy. While hallucinations are uncommon, they can sometimes be triggered by prescription or over-the-counter medications. This is especially true for older adults, people taking multiple medications, or those with certain health conditions.

At Realo Drugs, we believe that understanding how medications affect your body and mind is the first step to staying safe and feeling confident about your health. The more you know about potential side effects and early warning signs, the easier it is to catch problems before they become serious.

What are hallucinations

To put it simply, hallucinations occur when your brain perceives something that isn’t actually there and can take different forms:

  • Visual hallucinations: Seeing shapes, flashes of light, or even people that aren’t present.
  • Auditory hallucinations: Hearing voices, music, or sounds with no clear source.

These experiences can range from mild and brief to more noticeable and disruptive. It’s important to remember that hallucinations are a symptom, not a diagnosis, and can have many potential causes, including certain medications, stress, or underlying health conditions. Knowing the difference can help you respond appropriately and seek guidance when necessary.

How medications can trigger hallucinations

Some medications can influence the brain and how we perceive things, which, though uncommon, can sometimes lead to hallucinations. A few factors can make this more likely. For example, taking higher doses of certain medications, or mixing multiple drugs—including prescriptions, over-the-counter medications, and supplements—can increase the risk.

Other risk factors include pre-existing health conditions, such as kidney disease, vision changes, or memory challenges, as well as age-related sensitivity, since older adults may process medications differently. Even small changes in dosage or starting a new medication can potentially have an effect, which is why staying aware of these risk factors is so important.

Knowing these risk factors can help you catch side effects early and give you and your care team the upper hand in keeping your treatment safe and effective. If you have any questions or concerns about your medications, Realo Drugs is here to help. Scheduling a medication consultation with your pharmacist can identify potential complications, side effects, or interactions before they become bigger issues.

Drug classes commonly associated with hallucinations

Not all medications cause hallucinations, and side effects vary from person to person. However, these certain drug classes have been more commonly linked to hallucinations:

  • Anticholinergic medications: Often used for allergies, motion sickness, bladder control, or sleep. These can affect brain signaling, especially in seniors.
  • Certain antibiotics: Cephalosporins and sulfa drugs have been linked, in rare cases, to hallucinations, according to the American Academy of Ophthalmology.
  • Pain medications: Opioids and some medications for nerve pain may increase the risk.
  • Sleep aids and anti-anxiety medications: Side effects may appear when taken at night or in higher doses.
  • Steroids and neurological medications: Can affect mood, perception, and sleep cycles.

Even over-the-counter medications can play a role, especially when combined with prescription drugs. The good news is that not everyone will experience these effects, and being informed can make all the difference.

Early warning signs to recognize

Recognizing hallucinations early can help prevent complications. Watch for:

  • Seeing things that aren’t there, like shapes or people
  • Hearing voices or sounds with no clear source
  • Sudden confusion or disorientation
  • Changes in behavior, mood, or sleep patterns
  • Increased agitation, anxiety, or withdrawal

If you notice these signs in yourself or a loved one, it’s important to swiftly take action. Talk to your pharmacist at Realo Drugs if you’re unsure where to start. 

What to do if you suspect your medication is the cause

It’s natural to want to stop a medication right away if it seems to be causing hallucinations. But don’t reach for the pill bottle just yet—stopping some medications suddenly can be risky. Instead, here’s a safer approach:

  • Document your symptoms: Take notes about what you’re seeing or hearing, when it started, and any recent medication changes.
  • Review your medications: Include prescriptions, over-the-counter drugs, and any supplements you’re taking.
  • Check for interactions: Some meds can increase side effects when taken together.
  • Know when to get help fast: If hallucinations come with sudden confusion, vision changes, fever, or chest pain, call your healthcare provider or seek urgent care right away.

Catching these issues early can often prevent symptoms from getting worse and makes it easier for your healthcare team to adjust your medications safely.

How your pharmacist at Realo Drugs can help

Managing medications can get complicated, but that’s where your local pharmacist comes in. At Realo Drugs, we can help you make sense of side effects, check for interactions between prescriptions, over-the-counter meds, and supplements, and work with your healthcare provider to find safer alternatives. We know you, your health, and your history, so we can give guidance that’s personalized to your needs and realistic. That’s care beyond your prescription.

Click here to learn more about Realo Drugs and our personalized services.