Untreated, high blood sugar can cause many problems and future complications. Recognizing signs of high blood sugar levels and knowing how to lower them can help you prevent these complications and increase the quality and length of your life. Diabetes forum. 24 if i take the same full dose at 2 pm i will see the strongest effect on my how long does it take metformin to start to lower your blood sugar?. Metformin wonder drug diabetes. A popular oral drug for treating Type 2 diabetes. Metformin (brand name Glucophage, Glucophage XR, Glumetza, Riomet) is a member of a class of drugs called biguanides that helps lower blood glucose levels by improving the way the body handles insulin — namely, by preventing the liver from making excess glucose and by m Low blood sugar must be treated before it causes you to pass out (unconsciousness). People feel different symptoms of low blood sugar. It is important that you learn which symptoms you usually have so you can treat it quickly. Talk to your doctor about the best way to treat low blood sugar. Metformin can change your blood sugar level in both the direction, it can make blood sugar level go up too high, or it can drop it extremely low, and it varies from person to person. Usually, Metformin does not cause low blood sugar ( hypoglycemia ), unlike other diabetic medicines. There are always lots of questions around Metformin – how does metformin lower blood sugar levels, does metformin promote weight loss or weight gain, will it give me side effects – and lots more. Today we'll hopefully answer some of those questions. Blood sugar is a sneaky health issue, but there are many powerful foods that can help you lower blood sugar levels efficiently and quickly. First, in order to understand why high (and low) blood sugar occurs, it’s important to have a basic understanding of what triggers blood sugar highs and lows, and it all starts with insulin. Years ago, Metformin did a good job of keeping my blood sugar down to levels of 110-140. Then, I had a long illness and went off it for 5 years, even though my blood sugar levels were 150-300.