Have you had low energy with it? I bought a 6 month supply of 850mg Metformin when I went to Mexico because I intended to take it long term for anti-aging bene

Have you had low energy with it? I bought a 6 month supply of 850mg Metformin when I went to Mexico because I intended to take it long term for anti-aging benefits, and although the GI issues were almost non existent, my energy levels after waking up plummeted. I felt physically tired after waking up, and the only thing I wanted was to go back to bed. I then tried 425mg and had the same problem. I wonder if it's a symptom of low blood sugar? I didn't feel much hunger in the morning. It was a weird experience and I'm a bit sad I had to discontinue it.