Always use Betadine Gargle Mint 2% exactly as prescribed by your doctor. Do not swallow this medication. Complete the full course of treatment even if your symptoms improve. To ensure optimal effectiveness, avoid eating, drinking, or smoking for at least 30 minutes after using. If your condition does not improve after 2 to 4 weeks of treatment, inform your doctor. Dilute the gargle with an equal amount of warm water if the taste is too strong. Swish the solution in your mouth for 30 seconds and then spit it out. Repeat this every two to four hours, or as advised by your dentist or doctor. Betadine Gargle Mint 2% is generally safe and typically does not cause significant side effects.