What drugs can cause seizures?

Have you ever wondered what drugs can cause seizures? Well, look no further! In this article, we will dive deep into the world of medications and how they affect your body. Whether you’re a doctor or just someone curious about the subject, sit tight because things are about to get electrifying!

What Are Seizures?

Before we dive into which drugs can cause seizures – let’s first discuss what exactly these episodes are. A seizure is a sudden disruption in the brain’s electrical activity that can lead to convulsions, unconsciousness, and various other symptoms depending on the type.

Types of Seizures

There are different types of seizures categorized by their characteristics:

  • Absence (petit mal) seizures
  • Generalized tonic-clonic (grand mal) seizures
  • Focal (partial) onset aware and impaired awareness seizures
  • Myoclonic seizures
  • Clonic and tonic seizures

Now that we have covered some basics let us move onto our main topic.

Causes of Drug-induced Seizure

Several prescription and over-the-counter drugs including antidepressants, antipsychotics, antibiotics amongst others may increase your risk for developing seizure disorders. The risk varies with age: those at higher risk include children under 2 years old & adults above 65 years old.

Common Drugs That Increase Your Chances Of Developing A Seizure Disorder

Here are some common classes of medication notorious for inducing or worsening seizure activity:


These medications work primarily through chemical messengers called neurotransmitters like serotonin/norepinephrine/dopamine. But still be cautious, as non-adherence to safety advice while taking them could lead to problems.


These drugs interfere with neuronal membrane properties leading to single/multiple-period bursts in neurons thereby inducing long-term problems.


Decongestants with pseudoephedrine – a common active ingredient for the relief of nasal congestion – are restricted to try and curb abuse potential as well as reduce associated seizures from exposure.

Other Drugs Known To Increase Seizure Risk

Some prescription drugs may trigger convulsions in people who have never had them before or worsen seizure disorders. Here are some examples:

  • Theophylline
  • Isoniazid
  • Lithium
  • Amphetamines & Cocaine
  • Methylenedioxymethamphetamine (MDMA)
  • Illicit Drugs: cannabis, cocaine, amphetamine etc.

Note that this list isn’t exhaustive, an appropriate inquisition of the side effects on drug labels can clarify matters better. Always take necessary precautions while taking medication even over-the-counter ones!


In conclusion, there is no table that gets you set up for staying safe from drug-induced seizures rather than being informed about what’s going into your body. Being careful online who you buy medications off also helps quantify the magnitude of risk which can be overlooked sometimes amidst anxiousness regarding getting quick fixes wearing off after consuming it.

Stay safe always!

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