Hi there,This is Dr Basu, experienced Internal Medicine Specialist.I am here to address your concerns and provide great service.
Codeine is a short acting opiate.
The side effects may take about 72 hours to subside since its last use.
Sometimes it may take longer upto 7 days.
Improvement is seen day by day.
What symptoms are you experiencing?Best wishes,It was my pleasure to help you today.If I have answered all your questions, Please rate my response Excellent (click on the 5th star on top).Please bookmark my profile for fast, reliable authentic answers!This is the link to my profile:http://www.justanswer.com/medical/expert-mysticdoc/
Ok do not worry.
You should be fine by tomorrow.
One tablet will not cause much problem.
These are common side effects from codeine.
Please drink adequate fluids to flush out the drug from your body.