Whats the difference between metformin immediately release & extended release other than the obvious difference in the names. which is better for pcos?

Pill Delivery System: Extended release slowly releases the Metformin into your system. This maintains a steady medication level in your blood and allows you take the medication less frequently and get the same results. Non-extended release is cheaper but you have to take them more often and have higher peaks and valleys in blood levels. Most prefer the extended release unless paying cash. Best wishes!