It is Valium. What strength, I can't tell from the info in the question. White pill marked 555 163 is 2mg. Yellow pill marked 555 363 is 5mg. Blue pill marked 555 164 is 10mg.
this is a hydrocodone 10 mg, yes you can get high if you are not a frequent pain killer user
yes
If the imprint is S21, this pill is PENICILLIN V POTASSIUM 500 MG.
It's Naproxen
2407
capisoprodol
Asprin
Many have it stamped into the pill itself; others only come in certain amounts and each strength has a different form of pill. For most, you have to rely on the packaging. If you don't have the packaging it came in, don't trust it.
10 mg
Type in pill identification wizard in any search engine and once taken there enter the identifier code that is on all pills. This will tell you exactly what it is and the strength
furosemide 40mg by the company LPC