Hi, I'm Currently Underweight And I've Been Trying To Gain

Hi, I'm currently underweight and I've been trying to gain weight for a couple of months now but no result because i have no apetite most of the time. I stress a lot and don't get much sleep. My mood is usually down and most of the time im tired. I came across apetamin which helps you gain weight and by far i've seen good reviews. Would you recommed me to take it since nothing else is helping me now?