Metformin is a commonly prescribed medication for the treatment of type 2 diabetes, and it is generally considered safe and effective. However, it is important to follow your doctor’s recommendations and not make changes to your medication regimen without consulting with them first. Some supplements may be beneficial for people with type 2 diabetes. CoQ10 may have potential benefits for people with diabetes, has the effects on blood sugar control and other aspects of diabetes management. It’s important to choose high quality manufacture. I prefer to buy Coq10 in good known brands, like Wellabs https://shopwellabs.com/products/coq10-ubiquinol-capsules, Nature Made etc
Your doctor can also help you to develop a comprehensive plan for managing your diabetes that may include lifestyle changes, medication, and supplements as appropriate.