Cyproheptadine
"All my life I've been a "grazer" as my mum has said, so I've always stayed the same weight, I'm 33 & 5ft 9" now and went through a rough patch due to stress and illness and went down from 70kg to 62kg rapidly. I've used a lot of protein powders to try and gain, but really my diet, lifestyle and not getting enough calories in me is the problem.
So  I thought I'd look into other possibilities that people who suffer with no appetite and after a bit of searching I found Cyro-Vita which is the brand here, 6 days in and I've not weighed myself yet, however I'm finishing off large meals with ease and feel hungry all the time, which is a big deal for me, first night 4mg, I slept for 16hrs, so went down to 2mg before bed from then on all good!"