I've been put on Metformin due to my PCOS symptoms suddenly going out of control lately. I'm on 500mg three times per day.
Since I've been on it I've been absolutely shattered. I'm grumpy and feel like I'm jetlagged or hungover constantly. I'm a very keen runner and can barely muster the energy to go for a run. I'm having to force myself, which is really getting me down as I adore it.
It might just be coincidence but I can't think of anything else that's changed.
Is this a known side effect of Metformin?