I can't tell you from first hand experience, so ignore if you don't wanna here my BS, lol --- I believe Tyl #4 has 60mg of Codeine. For most that should be decent - considering many only have access to 8mg/tabs. I've read of those using much higher amounts tho - follow the extraction on erowid. You may want to try just one for starters (recommended by erowid - some are allergic), you might not like it - I've read of complaints of bad constipation thats no fun, hehe. I'm not gonna ask how u got those #4's, but may I say - you lucky fuky!