Skip to main content

Flexeril and Sleepy: What Users Say

Sleepy: mentioned by 7 users (3.0%)

Based on user experiences from 237 Flexeril 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 19.8%
dry mouth 9.3%
tiredness 5.5%
depression 3.0%
dizziness 3.0%
sleepy 3.0%
hallucinations 2.5%
hangover 2.5%
constipation 2.1%
insomnia 2.1%

Reviews for Flexeril

Commonly mentioned side effects
  • Bee...
  • August 14, 2010

For Muscle Spasm "I took Flexeril because I had been feeling intense back muscle pain. I was told that it would make me sleepy and feel relaxed. I took it at 9:00 PM thinking it was going to kick in quickly! I was wrong, 15 minutes later, nothing! So I made dinner, went online, then out of nowhere my neck felt heavy, like I couldn't hold my head up, and I stumbled to my bed. I saw the clock, and it showed 11:00ish. I slept like a baby! Woke up feeling great the next day, well rested, and my back felt better."

9 / 10
Was this helpful?YesNo
69 Report
  • Anonymous
  • April 20, 2010

For Migraine "I was first prescribed Flexeril in 1994 and have been in love with it ever since. I suffer from recurring migraines and bad sinus headaches. My doctor at the time tried many different remedies, but the combination of 10 mg of Flexeril along with 500 mg of Naproxen has been a '100%' effective result since I first took it. I only take it when I am at home, though, because the Flexeril makes me very sleepy. FYI: body size doesn't matter to this little pill as I'm 6'4" and 230 lbs!"

10 / 10
Was this helpful?YesNo
64 Report
  • Art...
  • April 22, 2017

For Muscle Spasm "Stay away from this garbage. I was stupid enough to try it for 3 days, 10 mg before bedtime. All those days, I was like a zombie. Dry mouth. Crazy dreams. Constant nausea. Stomach stabbing pain. No energy at all. Sleepy during the day and crazy at night. I don't know who's writing positive reviews, maybe pharma people, lol. Do your research. Stay away from this drug!"

1 / 10
Was this helpful?YesNo
60 Report

Frequently asked questions

  • Lar...
  • July 25, 2011

For Sciatica "Brand Name works great. Does the job and not even noticeable to myself that I've taken it. It will make me sleepy once I lay down, but fully functional on this medication until then. I've taken this drug since 1992. Unfortunately, can NOT find this medicine in Brand Name."

10 / 10
Was this helpful?YesNo
56 Report
  • coc...
  • February 14, 2010

For Migraine "I have used Flexeril for back pain but took one the other night because I had a migraine and couldn't sleep. I've never had relief from any migraine, so I was amazed when, after about 2 1/2 hours, I got out of bed and felt OK to move around. After another hour or two, I was feeling drowsy, so I ended up going to bed, but I was happy to discover that Flexeril helped my migraine. It does make me VERY sleepy, so I only take it when I don't have much to do the next day. I usually feel lethargic the day after."

8 / 10
Was this helpful?YesNo
55 Report

Are you taking this medicine?

Your review helps others make informed decisions.
Write a review
  • Tin...
  • Taken for less than 1 month
  • December 11, 2017

For Muscle Spasm "So I recently slept wrong and thought I had a stiff neck that it would go away. I was wrong. Three days later, it got worse and worse that I couldn't move my head down or to the right or upward. I was prescribed 10 mg twice a day, but I just took it once a day with naproxen, an anti-inflammatory. Plus, I rubbed Vicks on the area, which my Puerto Rican mother swears works wonders, lol. Yes, it makes you super sleepy, but it was a great sleep, no complaints. And in 24 hours and 48 hours later, I can do my PT exercises without pain, and I feel great about 70% improvement. I still have to continue to stretch and massage the area. This is helping. Everyone responds differently, though."

9 / 10
Was this helpful?YesNo
27 Report
  • PZ1...
  • Taken for 5 to 10 years
  • January 16, 2025

"I took the brand name pill a few times over the years for muscle spasms. 10 mg and only one at night. They worked. I now have a pinched nerve in my neck, and the pain is excruciating, into my shoulder, arm, and hand. My doctor prescribed 5 mg three times a day. I have taken three, not on consecutive nights. They do nothing for the pain, they do make me sleepy, but I keep jerking awake, it feels like I stop breathing. Still not sure why they were prescribed, but the pain is so bad, I was willing to try anything. I think maybe they work best for a muscular injury."

3 / 10
Was this helpful?YesNo
0 Report

Are you taking this medicine?

Your review helps others make informed decisions.
Write a review
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.