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

First, it’s important to understand the impacts metformin might have had in this scenario, even without a prescription. Metformin commonly affects B12 absorption, which can contribute to deficiency and potentially manifest in symptoms such as fatigue, neurological issues, and trouble sleeping. Addressing a B12 deficiency typically involves dietary adjustments or supplementation with vitamin B12, either orally or via injection, depending on your levels and symptoms. A healthcare provider should determine the precise dosage and method. Overthinking and poor sleep can intensify the effects of vitamin deficiency and vice-versa. Establishing good sleep hygiene can help—consider a consistent sleep schedule, limiting screen time before bed, and creating a calming bedtime routine. Also, stress management strategies like mindfulness or therapy can reduce overthinking, positively impacting sleep. Regarding metformin and its mechanism, while it does affect mitochondrial pathways, this is primarily relevant to glucose metabolism rather than affecting cell survival directly. In the context of normal blood tests, it’s less likely that cellular survival is at risk solely from past metformin use. Since all your blood tests are normal except mild B12 deficiency, continuing to monitor your health with regular check-ins and possibly consulting with a healthcare provider might be useful. They can provide tailored advise specific to your situation, ensuring no underlying condition was overlooked. If any drastic changes in symptoms occur, immediate medical attention would be crucial to prevent escalation.