Are employers allowed to ask for medical information including pill bottles?

I have been getting treated for chronic migraines and chronic pelvic pain for awhile now. My doctor prescribes me Lortab 7.5 and Xanax (1 mg 3x per day) (I also have a panic disorder and have been on Xanax for 10 years). Last week, I was having a bad spell, meaning my pain was much worse, so I doubled my dose of Hydrocodone (lortab). I work in Advanced Tech Support at a Help Desk and troubleshoot high tech devices for consumers and apparantly my supervisor was told by someone I was "nodding" off and my speech was slurred and it appeared I was QUOTE "F*cked up". He took me in a conference room and told me this then asked me to leave and also bring in medical statements from my MD about my medical condition and medications. I had no problem with this and my doctor is mailing me that information but when I came back to work yesterday (supervisor wasn't there), I was told via thegrapevine, they would make me bring in pill bottles as well. Is that legal-Are my rights being infringed?

Your employer has no right to ask about your medical conditions, so long as they don't affect your work. If you are nodding off and your speech is slurred, the your work is affected.

If you are "f*cked up" at work, your employer is worried you might have an accident and hurt yoursef, and he'd be responsible. Also since you do tech support, customers who call in and hear you slurring your speech might think you're drunk or on illegal drugs, and it reflects badly on the company.
If you're that badly affected, you should go home.

By asking to see a note from your doctor, or to know what prescription drugs you're taking, your boss is giving you a chance to show that you weren't on illegal drugs or drunk on the job!

Everything so far has been handled legally. The 'grapevine' seems to have you concerned. But that wasn't a request from the company, was it? Just a rumor?

Well, until they do something illegal, they're within their rights.

They can ask if you have medical condtitions that require accomodation under ADA. It is also your responsibility to inform them if you do. Because it has affected your work they have the right to ask. How do they know you aren't an alcoholic or drug user otherwise? And if you are they have to allow you to obtain treatment as a medical condition. As to how much info. they can ask for I don't know.