Answer:
First off they do not make hydrocodone 10-350. they do however make hydrocodone 10-325 which is the brand name Norco.
10-325 means 10mgs of hydrocodone (narcotic analgesic) and 325 mgs of acetaminophen (tylenol) vs 7.5mg of hydrocodone/325mg acetaminophen
The 10/325 is stronger then 7.5/650