Given penicillin 500mg for a tooth infection. says take every 6 hrs for 7 days. can i take one dose late daily? i sometimes sleep longer than 6 hours.

Yes: The easy answer is yes. If your 30 min late on a dose it's not a huge deal. Just try to stick to the 6hr time frame as close as you can. If you're getting the appropriate total dosage in each 12-hr period you should be fine.

Keep to regimen: You need to take the pills as prescribed because the blood level dose decreases over time until there is no more active antibiotics are available for the infection. There is a higher dose of 875mg that can be taken twice a day.