Many people associate Parkinson’s strictly with genetics or aging, some researchers have investigated how certain medications may play a role in triggering or mimicking Parkinson-like symptoms.
What Are Drug-Induced Parkinsonism Symptoms?
Some medications have been found to cause side effects that closely resemble Parkinson’s disease. This condition is known as drug-induced parkinsonism — and while it’s not true Parkinson’s, it can sometimes look and feel very similar.
People may experience:
Tremors
Muscle stiffness
Slowed movement
Trouble balancing or walking
These symptoms may improve after stopping the medication, but not always — so early awareness is key.
Medications That May Be Involved
Researchers have flagged a few classes of drugs that may, in certain cases, increase risk for Parkinson-like side effects, especially in older adults or those with underlying neurological concerns.
Some categories include:
Antipsychotics (often used for schizophrenia or bipolar disorder)
Anti-nausea drugs (used for dizziness or GI issues)
Calcium channel blockers (used in blood pressure control)
Certain antidepressants
Not everyone who takes these drugs will experience symptoms, and many people benefit from them safely. But it’s worth reviewing your medication list with a qualified provider if you’ve noticed changes.
What Can You Do?
If you or a loved one is taking medications and has developed new tremors or stiffness, don’t stop medications on your own — but do bring it up with your healthcare provider. In some cases, switching to an alternative or tapering under supervision can make a big difference.