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Keppra and Drowsiness: What Users Say

Drowsiness: mentioned by 17 users (5.5%)

Based on user experiences from 307 Keppra reviews, the following table shows the most commonly mentioned side effects.

All user comments are moderated by Drugs.com. Each review is verified for relevance and screened for inappropriate content. Side effects are user-reported and not clinically verified.

anger 21.5%
depression 18.6%
mood swings 14.3%
tiredness 14.0%
irritability 10.1%
memory loss 6.2%
anxiety 5.9%
hallucinations 5.9%
dizziness 5.5%
drowsiness 5.5%

Reviews for Keppra

Commonly mentioned side effects
  • JJH...
  • Taken for 1 to 6 months
  • July 20, 2013

For Seizures "Started taking Keppra (750mg twice daily) alongside Lamictal (250mg twice daily) as the latter medicine was not 100% efficient to control partial seizures. Although the Keppra seems to have stopped the seizures completely, there are many side effects to be aware of. Drowsiness, tiredness, and irritability/moodiness are extremely common, so that is often a downer, especially when you're trying to enjoy yourself. Depression is difficult to identify as dwelling on the side effects on the leaflet only makes you feel worse! Overall, an effective medicine for treating epilepsy but I had many bad side effects."

7 / 10
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  • arc...
  • March 20, 2011

For Seizures "I have been on many anti-epileptic medicines over the course of 30 years: Dilantin, Mysoline, Klonopin, Depakote, Topamax, Lamictal, etc. While Keppra did a good job of controlling the myoclonic jerks, which I often experience, it was way too sedating when combined with Topamax. It wasn't uncommon for me to sleep twelve hours a day. The real problem with Keppra was the mood swings, depression, anger, and suicidal thoughts. It's no secret that a link exists between epilepsy/seizure disorders and some (all) of these issues; however, in my case, these feelings and emotions definitely intensified while taking Keppra."

5 / 10
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54 Report
  • api...
  • July 2, 2011

For Seizures "I've been on 500 mg 2x/day for 5 years. Keppra controlled the seizures immediately the day I started it, but I did experience extreme drowsiness and can sleep for days. People always told me I looked tired and knew I was always sleepy. I also got very moody and am easily irritated to the point where no one wants to be around me. I didn't think that it could be linked to the medication until now. It's a terrible feeling, but it does control the seizures."

7 / 10
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50 Report

Frequently asked questions

  • Rya...
  • Taken for 5 to 10 years
  • February 16, 2016

For Seizures "My brother had a tumor 15 years ago removed after having a seizure. Takes 1000 mg Keppra a day. He has mood swings, diarrhea if he does eat before, and delusional. Still effective. I started having anxiety attacks and seizures at 24 years of age. Neurologist prescribed me Keppra 500 mg daily and 2 mg Xanax a day when needed, usually, I break Xanax into pieces as you can because they have little bars to do so. I don't have any side effects besides feeling sleepy at the end of the day. I don't take Xanax until after work at the end of the day as Xanax does make me sleepy. Keppra deserves a 10 for me. But my brother rates it a 7. Everyone is different. I know this is for Keppra, but Xanax is not for anyone, a lot of people can't handle the drug and can't control themselves. Let the doctor determine."

9 / 10
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25 Report
  • Luk...
  • Taken for 2 to 5 years
  • December 15, 2016

For Seizures "I have had epilepsy from 18 months old, started on Epilim. By the time I turned 3, I was seizure-free till I was 16. Just before my math exam, I had a seizure, wasn't exactly sure what caused it. I went to my GP, I was put on 100 mg of lamotrigine, then went up to 250 mg of lamotrigine, finished on 300. The drug didn't work at all. I was then referred to see a neurologist, and we started off taking Keppra 500 mg alongside the lamotrigine. We then moved to 750 mg of Keppra with the lamotrigine BD. After all of that, we then moved to 1000 mg BD, since then to know, I'm now on 4 grams a day alongside 600 mg of oxcarbazepine and currently on 6 mg of Perampanel. I'm getting the drowsiness, tiredness, and from the Keppra, I'm turning aggressive."

1 / 10
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22 Report

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  • Saa...
  • Taken for 2 to 5 years
  • June 24, 2013

For Epilepsy "The only few problems consist of drowsiness, which is better than having seizures. Another important issue is dosing. You must take every day's worth, or it can lead to an aura or a full-fledged seizure, which can affect driver's licenses (loss of 2 years)."

8 / 10
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  • Mom...
  • Taken for 2 to 5 years
  • April 17, 2020

For Epilepsy "Son was diagnosed with juvenile myoclonic epilepsy at 12 years old after 2 tonic-clonic seizures. He was given 250 mg Keppra twice a day. He had a 3rd breakthrough seizure after forgetting to take 2 doses. After that, he was seizure-free for three years, including a trip from the USA to Europe. The doctor recommended a weaning process after a normal EEG, which we followed to a T. He relapsed and had a tonic-clonic seizure and is back on Keppra, 500 mg twice a day. He has a reminder to take it at 8 am and PM, and that helps moderate side effects. His side effects are mostly sleepiness and emotional swings, but being physically active helps a lot. We are hoping Keppra works as well the second time around as it did the first."

9 / 10
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  • mad...
  • Taken for 2 to 5 years
  • October 19, 2017

For Seizures "Sometimes I feel drowsy, sometimes I feel dizzy, sometimes I don't. I am not sure if it is really part of the medication, but I do know I don't seize on it. Compared to the first type of medication I tried (it sent me loopy), this is a lot better, but it could also be better. Over the years, start to analyze how your head processes, how much do you remember, and make sure you're not getting slowly cranky on it."

8 / 10
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  • Dan...
  • April 11, 2011

For Seizures "I have only been on Keppra for about a month, but I'm noticing mood swings, shakiness, and the medicine makes me sleep a lot. I haven't had another seizure, thank God, but the mood swings are awful. I hope after I have my brain tumor removed, things get better."

8 / 10
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22 Report
  • Emm...
  • Taken for 1 to 6 months
  • August 29, 2022

For Epilepsy "I first started taking Keppra after having a tonic-clonic seizure while 37 weeks pregnant. At first, Keppra was fine, it just made me feel very drowsy. As time went on, my moods were horrific. I nearly split up with my husband, it was that bad. I feel so low and suicidal. I couldn't bond with my newborn, my hormones and new tablets didn't work well. I was horrendous. I thought I got to nip this in the bud before I felt more and more worse. My neurologist weaned me off and put me on Lamotrigine 100 mg. I felt the difference straight away, have absolutely no side effects, feel amazing, and haven't had one suicidal thought since being on that. Also, it's a mood stabilizer, so that helps! Keppra needs stopping, it's like the devil's drug!"

1 / 10
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6 Report
  • San...
  • August 9, 2009

For Seizures "I was placed on Keppra in January 2009 by an emergency room physician after a reported seizure, which had no professional diagnosis. A neurologist whom I saw post-emergency kept me on the medication as I reported no side effects. I had what I now believe to be a fainting spell related to an atrial fibrillation condition of my heart and a strenuous run, without a 'cool-down.' I am pushing to get off this drug, as I experience dizziness, light-headedness, sleepiness and somnolence, fatigue, and exhaustion most of the time. I am a 2008 heart valve transplant recipient and on diuretics and blood thinners, both required to avoid congestive heart failure and embolisms (artificial valve)."

5 / 10
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19 Report
  • San...
  • August 9, 2009

For Seizures "I was placed on Keppra in January 2009 by an emergency room physician after a reported seizure, which had no professional diagnosis. A neurologist whom I saw post-emergency kept me on the medication as I reported no side effects. I had what I now believe to be a fainting spell related to an atrial fibrillation condition of my heart and a strenuous run, without a 'cool-down.' I am pushing to get off this drug, as I experience dizziness, light-headedness, sleepiness and somnolence, fatigue, and exhaustion most of the time. I am a 2008 heart valve transplant recipient and on diuretics and blood thinners, both required to avoid congestive heart failure and embolisms (artificial valve)."

5 / 10
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  • kri...
  • July 15, 2008

For Seizures "I was put on Keppra as a safer choice while being pregnant. While Lamictal has more studies done, I was allergic to it. I have loved being on Keppra. I was drowsy at first, but that side effect went away. But now I need to decide whether to breastfeed or not. So many places say not to, I am wondering if anybody has any advice."

10 / 10
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18 Report
  • Lin...
  • August 31, 2022

For Seizures "In 2018, I had a successful surgery to remove a benign tumor on the lining of the brain; however, two months later, I developed a staph infection in the cavity left by the surgery. So I had two more surgeries after that. Four months later, I had my first hour-long blackout (evidently caused by scar tissue on the brain). I had three more in 8 months' time. Finally, I went to a neurologist. He put me on 250 mg of Keppra twice daily. That’s the lowest dose. Thankfully, I haven’t had any blackouts since I started taking it. However, I hate taking it! All I want to do is sleep. I have zero energy and no motivation to do anything. I’ve lost interest in life! This is not living. I don’t have any of the anger issues I see others have, so I’m thankful for that."

7 / 10
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  • Non...
  • Taken for 5 to 10 years
  • July 27, 2021

For Seizures "Was on the highest dose (1 gram). Drowsy, sleeping way too much, eating one meal a day, irritated, lack of energy, and what was prescribed to me as a depressant. I'm currently on 500 mg with a bit more energy, but I'm being weaned off completely after 8 years of misery. I genuinely can't wait until the day when I don't have to take any more Keppra. I would advise anyone who is going on to Keppra/levetiracetam to ask questions to their neurologist or epileptic nurse before taking."

4 / 10
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  • Hur...
  • Taken for 2 to 5 years
  • October 8, 2021

For Seizures "Had first seizure at age 73. MRI didn't reveal anything. Dr. prescribed 750 mg twice a day. Questioned such a high dose, and he said some people take 3000 to 5000 mg a day. Have not had a seizure in 3 years, but side effects are horrible. Lightheadedness, weakness, anger, shortness of breath, loss of balance, drowsiness, ear infections. I am ready to reduce dosage and try to stop taking it altogether."

8 / 10
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  • jam...
  • March 13, 2023

For Epilepsy "Look, it does the job. I don't have seizures on it, but it also makes me mentally foggy, extremely sleepy, aggressive, depressed, and suicidal every now and then."

3 / 10
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Reviews may be edited to correct grammar/spelling or remove inappropriate content. Reviews appearing to come from parties with a vested interest are not published. This information is not intended to endorse any medication and should not replace the expertise and judgment of healthcare professionals.