drugs

Law enforcement sources tell TMZ ... multiple prescription drug bottles were found in the Beverly Hills hotel room where Whitney Houston died ... but we're told there were NOT a lot of pills at the scene.

Among the prescriptions ... ibuprofen (painkiller), Xanax (anti-depressant), Midol (for menstrual cramps), amoxicillin (for treating bacterial infections) ... and more.

We're told the amoxicillin was prescribed recently because Whitney had been suffering from a sore throat.

We're told some of the prescriptions were old ... some issued in 2011 ... but some of the bottles were from 2012.  We're told the pill bottles that were recovered at the scene did not contain a lot of pills.