Aprimalast

I have been on aprimalast for around 2 months now and was working well but I have had to stop taking it after getting server headaches, migraines, nausea vomiting and diarrhoea. I tried to contact my dermatology doctor but was never called back, so had to stop the pills last week after seeing my gp I still have the side affects a week later, I was wondering if anyone else has had side affects and if and when they stopped. I have psoriasis on 60% of my body inc sclap and hand and toe nails, had creams for years then metharoxate and acitretin. Also have underlying immune problems and on meds. Any feedback would be great. Thank you