I started the meds approximately a week ago. I was told the
Phen would give me all of this energy and that the Metformin would keep me in the bathroom a lot until my body adjusted, but I have had neither really. The first couple of days on the Phen I had a boost of energy, which I loved, but it quickly faded. I am now constantly tired, no matter how much sleep I get. From what I've researched fatigue can be a side effect of both medicines.