Hi Dr, My daughter Fiona, aged 33, and not on any other medication, took Pristiq 50 mg one per day, for about nine months,and stopped with Dr's permission. She has been off them for about 2-3 months, and is suffering anxiety, and going back to her Dr. on Fri, but may need to go today. She has a tendency to put on weight, and put on 20kg with Pristiq. Are there alternative anti-depressants, that don't cause weight gain, that will help with anxiety and insomnia. She has three children; one 7 at school, one 6 and one just 2. Thank you for your help. Linda Griffis, Bulahdelah, N.S.W. Fiona lives at Taree N.S.W.