How to feel normal again after using metformin for 7 months with mild B12 deficiency and sleep issues?

To help you feel back to normal after using metformin without a prescription alongside your noted issues, there are a few steps you can take that are guided by evidence-based strategies. First, regarding your mild B12 deficiency, it would be helpful to integrate B12-rich foods into your diet like lean meats, fish, dairy, and fortified cereals. Consider a B12 supplement, but ensure to consult a healthcare provider for the correct dosage. Metformin use is known to sometimes impact B12 levels, so this step could also assist in restoring your energy levels. Your mention of sleep issues and overthinking suggests that looking into sleep hygiene could be beneficial. Aim to keep a regular sleep schedule, avoid screens before bedtime, and create a restful environment. Implement relaxation techniques such as deep breathing exercises or mindfulness meditation to help reduce overthinking. This can also be tied to stress management, which may have a significant impact on sleep quality. On the topic of feeling more like yourself, regular physical activity can improve both mental and physical health. Try integrating at least 30 minutes of moderate exercise, like walking or cycling, into your daily routine, which may also enhance mood and reduce anxiety. Since your blood tests are normal, maintaining a balanced diet, staying hydrated, and avoiding potential new medications or supplements without professional advice is wise. Lastly, discussing your case with a healthcare provider would be ideal to ensure no bigger underlying issues, since self-medication should be approached cautiously. If any sudden or severe symptoms occur, such as significant fatigue or mood alterations, seek medical attention promptly.