The maximum elimination half life of metformin is stated as 17.6 hours. It takes 5.5 x elimination half lifes for a medicine to be cleared from ones system. So it'll take about 96.8 hours for metformin to be totally cleared from ones system.
- Metformin Information for Consumers
- Metformin Information for Healthcare Professionals (includes dosage details)
- Side Effects of Metformin (detailed)
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