"i have had knee surgeries on both kness. i snapped 3 out of the 4 ligaments, including my acl and torn meniscus on both knees. the surgeries have helped but i still have severe pain in both knees. i was started on vicodin es, was taking up to 3 pills a day for about 9 months. the vicodin started wearing off after about 2 hours and the maximum amount you can take are 5 per day. doctor switched me to norco 10/325. so far i am able to control the pain by taking 1 pill upon waking and 2 after about 8 hours, when i&#039;m not at work. i take 2 pills when working out on the elliptical or doing a lot of walking. still have some pain after an active day but it is way more tolerable now. so far so good!"