Hello and welcome to Healthcare Magic. Thanks for your query.
A fasting sugar level of 222 and a post-prandial (after food) sugar level of 237 are definitely indicators of diabetes
. The medication wjich you have been prescribed - Gluconorm
- is a medication to keep the sugars under control.
The reason why your sugar level has come down to 138 is because of taking the medication. In other words, it is the medication which is controlling the sugar, and if you stop it, your sugars will increase again. Remember, diabetes is a chronic illness and regular medication will only keep the sugar levels under control, but not completely cure the disease. You have to be on medication continuously.
Wish you all the best.
Dr. Sheeba Stephen
Emergency Medicine Specialist