Sleep Disorders Community
4.95k Members
Avatar universal


For the past three months, I have been falling asleep in the car (as a passenger) or while reading the morning paper(basically any time I sit down).  If I drive, I have to stop after 20 minutes and take a nap.  I'm wondering if it is connected with any medication I am taking.  It seems as if  "sleepiness" is mentioned in the literature of any prescribed medication.  I am on L-thyroxine (should I return to Synthroid?)  The medication has been decreased after my last blood test.  Can too much synthroid cause sleepiness?  That doesn't seem to make sense.  I sleep well at night-about seven hours, don't drink or smoke and am refreshed in the morning.  Can anyone shed light on this?  My doctor seems baffled.
5 Responses
Avatar universal
Hi~ We really wouldn't know here.  Your doctor needs to do an extensive physical exam.  Check your heart and B/P while in different positions etc...check blood work for anemia...   Something is making you weak/tired.

Good luck~
Avatar universal
Yes,I'll flag it for you.  :)
Avatar universal
I had problems a little like yours when I was taking Nurontin. I would actually black out. Just like someone pulling a blind down. A few seconds(or partial seconds) later I would be conscious again, needless to say I quit the stuff.
1355118 tn?1298564879
Hi, welcome to the forum. Your history is suggestive of narcolepsy. In this condition there will be excessive daytime sleepiness. But in your case it seems milder form of it. In this condition there will be “automatic behavior" such as driving past a highway exit or writing off a page, with no memory of the previous few minutes. Classical narcolepsy constitutes of Hypnagogic hallucinations, Sleep paralysis and Cataplexy which is not seen in your case.
You need to undergo tests like Polysomnography, Multiple Sleep Latency Test and CSF levels of Orexin/Hypocretin which help to substantiate the diagnosis.
Having regular nap for about 20 min during day will help to prevent sleep attacks.
Drugs like Modafinil, Methylphenidate and Amphetamines against prescription can help to increase the alertness during the day and they are esp. useful in excessive daytime sleepiness or increased sleep attack.
I suggest you to consult physician for further evaluation. Take care and regards.
Avatar universal
We figured it out.  I wasn't on a new medication, but rather my doctor changed the time of day that I should take an existing medication (trying to regulate my blood pressure).  The medication is Clonidine  (0.1MG).  The literature suggests possible drowsiness.  But I always overreact to medication.  So now I was taking it in the AM and it was acting as a sedative.  We changed it back to PM and I am out of my fog.  
Thanks for your help.  Leeann123
Have an Answer?
Didn't find the answer you were looking for?
Ask a question
Popular Resources
Healing home remedies for common ailments
Dr. Steven Park reveals 5 reasons why breathing through your nose could change your life
Want to wake up rested and refreshed?
For people with Obsessive-Compulsive Disorder (OCD), the COVID-19 pandemic can be particularly challenging.
A list of national and international resources and hotlines to help connect you to needed health and medical services.
Here’s how your baby’s growing in your body each week.