10mg Amitryptiline with 2mg melatonin SR. (NOTE melatonin SR and melatonin have very different effects and side effects. You should not take melatonin! It has a very short life and the sudden drop in level during the night is not conducive to better sleep). You could add oxytocin 20IU nasal spray Or if the melatonin SR is a problem then substitute with the oxytocin. All before bed Works very well for most people. Talk to your doctor about this combination. Your doctor must consider the interactions between this combination and the certraline you already take.