Appetite goes through phases for everyone, totally normal even on the med. No need to raise the dose right away, and I think following the manufacturer's guidance alongside your doctor matters, since the official instructions were at least properly tested, unlike other doses and methods. Honestly 5 mg is treating me well so far: I get to ponder what I fancy, eat a decent amount and live a fairly normal life. On 2.5 mg my appetite was basically dead, all food looked gross and I forced myself to eat, especially out. I want my appetite regulated but still enjoy a meal, even a few bites. I worried about health problems from so few nutrients, so I focused on protein, which I still do.