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Sominex and Drowsiness: What Users Say

Drowsiness: mentioned by 18 users (28.1%)

Based on user experiences from 64 Sominex 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.

drowsiness 28.1%
anxiety 4.7%
tiredness 4.7%

Reviews for Sominex

Commonly mentioned side effects
  • Anonymous
  • April 14, 2012

For Insomnia "As a former bartender, I'm a night owl by nature. Now that I'm in law school and have 8 am classes, I can't afford to be up all night. It ruins my entire next day because I cannot think and I am useless. Also, lack of sleep depresses me and gives me anxiety. Anyhow, I have tried literally everything under the sun - Ambien, Sleepytime, Valerian, melatonin, Simply Sleep, and 4-5 others, both natural and not, and Sominex is the only one that has ever consistently worked to not only put me to sleep but KEEP me asleep on most nights. Occasionally, I'll have an off night when I wake up mid-sleep or when I'm super groggy in the morning, but at least 90% of the time it works great. I usually take it about 1-2.5 hours before I want to fall asleep."

9 / 10
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124 Report
  • Gsd...
  • Taken for less than 1 month
  • May 20, 2019

For Insomnia "I took 1/2 a Sominex pill because it was my first time taking this drug. It took more than an hour to make me sleepy. Once I fell asleep, I slept 10 hours without interruption or dreams, but I felt horrible for more than 24 hours afterward. It was hard to wake up (even after 10 hours of sleep), and all day afterward I felt groggy and inexplicably angry and cranky. My limbs felt heavy, and I was just so very tired all day... the kind of extreme fatigue you feel with the flu. This drug is way worse than having a bad night of sleep... and I only took 1/2 a pill! I'll never take this again."

1 / 10
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45 Report
  • Anonymous
  • Taken for less than 1 month
  • September 3, 2019

For Insomnia "I’m the type of person to be terrified to try new drugs, always read up on the reviews, etc. So I took half of this Sominex pill. I’ve taken it 3 times now. Before taking this pill, I would have nightmares constantly, wake up 3 or 4 times in the night, and sometimes stay awake. After taking half of the Sominex pill, my nightmares have gone :) and I manage to sleep uninterrupted through the night, maybe wake up to wee or wake up once or so. You do feel a bit groggy in the morning, but that’s because it’s still in your system, it takes around 12 or 13 hours to get out of your system, so just take it in good time :) Try it on a day off if you’re worried."

9 / 10
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29 Report

Frequently asked questions

  • Big...
  • Taken for less than 1 month
  • November 17, 2018

For Insomnia "Took a half tablet about an hour before bed. Slept just short of nine hours and probably could have turned over and got a bit more but forced myself up. Felt a bit drowsy for a short time, but a lot better than I usually do after my normal 5-6 hours. I would strongly recommend you start at half a tablet and work your way up if necessary, as if half a tab does what it did, I'd hate to see what the manufacturer recommended two would do. Would give this a ten but should always leave room for improvement."

9 / 10
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19 Report
  • Anonymous
  • Taken for 6 months to 1 year
  • October 17, 2020

For Insomnia "I have tried everything non-prescriptive for sleep, and Sominex really works. I am 6 ft and normal build and only need 1/4 tablet. I've worked out this is the optimal dose for me, so I can still function well in a busy job the following morning. Anything more than 1/4 tablet and I feel too groggy to function properly the next day."

9 / 10
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13 Report

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  • Cow...
  • Taken for less than 1 month
  • December 17, 2020

For Insomnia "Ugh, just no. The first time I tried this tablet, I took a whole one. Did what it said on the tin, and I was knocked out within the hour. I slept for thirteen hours and woke up feeling terrible. Groggy, dizzy, and as if my limbs were tied down with iron weights. I wanted to cry at the tiniest things and felt bloody awful. Having slept for so long, I couldn't sleep it off. The next night, I took half a pill. In the morning, I didn't have the same grogginess, but I wasn't firing on all cylinders. I was also gripped with horrible anxiety that stayed with me until about 9 pm. I didn't take anything last night, and I feel absolutely fine. I find it difficult to chalk this up to coincidence."

2 / 10
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14 Report
  • Tom...
  • Taken for less than 1 month
  • February 24, 2019

For Insomnia "They do help me sleep, but I feel really terrible in the morning. Very groggy and very short-tempered. Have had to throw the pack out, as I feel so awful in the mornings. I've not noticed this to this degree of morning grogginess with other sleeping tablets. Horrible stuff!"

3 / 10
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17 Report

More FAQ

  • Nic...
  • September 8, 2015

For Insomnia "Funnily enough, after taking this, I feel it is easier to fall asleep during the day than at night. After an unintentional 12 hours of sleep (just couldn't wake myself up), I was awake for a few hours, then was too drowsy and fell asleep again. I really feel these tablets work better during the day than at night. :("

5 / 10
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22 Report
  • Mot...
  • Taken for 2 to 5 years
  • August 3, 2017

For Insomnia "Certainly helps me to sleep. But first time I slept for about 12 hours, which meant that I slept badly the following night. I now take 3/4 of the tablet for a solid 8 hours. I suggest trying 1/2 or 3/4 your first time. The first half hour or so on waking leaves me groggy, then I'm fine. Also seems to help me sleep really well the following night. I use only occasionally."

9 / 10
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13 Report
  • Dee...
  • Taken for 2 to 5 years
  • August 24, 2018

For Insomnia "I have been using Sominex on and off for a few years. They do the trick for me, but I find a whole tablet too much. But I tend to break the tablet, so I end up taking a 1/3 of a tablet. They are easy to break, and this is enough for me. I sometimes take 1/2, and again this is more than enough. They are strong tablets, and I do feel a bit groggy in the morning, but nothing that stops me from functioning, and I always manage to get to where I need to be the next day."

10 / 10
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10 Report
  • Ros...
  • Taken for 2 to 5 years
  • April 19, 2018

For Insomnia "I slept like a log last night and always do when I take this particular sleeping aid. But the side effects are that I feel groggy in the morning. I took it while on holiday, and my friends said I seemed like a different person, not really with it! I question that something so effective and strong hasn't got its counter negative points!"

9 / 10
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5 Report
  • Amy...
  • Taken for less than 1 month
  • August 27, 2018

For Insomnia "I often suffer with insomnia. I struggle to get to sleep at night, and I can be up for hours. Sominex helps to drift off quite quickly once it kicks in. Only criticism can make me feel drowsy in the morning for about half an hour, but it works well to help me sleep."

7 / 10
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5 Report
  • nic...
  • Taken for less than 1 month
  • October 14, 2022

For Insomnia "I have never been a very good sleeper, but since hitting menopause, my sleep pattern has been awful. Waking up several times a night. Someone recommended Sominex, so I thought I would give it a try. For reference, I am 5'3" and between a 12 and 14 UK size. I rarely take medication, so after reading the reviews, I thought I would start with just a quarter of a tablet. Within an hour, I was feeling sleepy (I was tired anyway). I slept right through without waking once. I don't feel groggy, so my advice is to maybe start small and then work the dosage up to what suits you."

10 / 10
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1 Report
  • Blu...
  • Taken for 1 to 6 months
  • August 15, 2021

For Insomnia "I take this tablet to help me between changes in shifts. As I transition between a 3 a.m. finish to a night shift or between night shifts, it helps me get around 8 hours of sleep. I was finding if I went to sleep at 7 a.m., I would be awake by lunchtime, then tired for my night shift. Taking half a tablet keeps me asleep until 4. I do wake up feeling groggy and often fall asleep again for a nap early evening, but by the time I start work, I’m fine and good to get through the night. It helps, and I only need to take it a couple of times during a 6-day set of shifts."

9 / 10
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  • Ban...
  • February 12, 2016

For Insomnia "Takes a while to get to sleep, but once asleep, that's how I stay. However, I have found that it still affects me the next day... extremely groggy and exhausted. Not for me."

4 / 10
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24 Report
  • don...
  • November 18, 2011

For Insomnia "I take it 3 or 4 times a week, and it works well. Full night's sleep. A little drowsy when I wake up, but it passes after my morning coffee. I love it."

10 / 10
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29 Report
  • Mon...
  • September 1, 2018

For Insomnia "This medication leaves me very groggy the next day."

5 / 10
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5 Report
  • Lua...
  • Taken for less than 1 month
  • July 30, 2021

For Insomnia "Took me 6 hours to get to sleep (I was really restless and tossing and turning), then slept in and felt groggy when I woke up."

3 / 10
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0 Report

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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.