Several weeks ago I had a telehealth session with my registered dietitian. She was happy to learn that I no longer take Zyprexa nightly but warned me that Seroquel might now be causing weight gain. The thing is, I am on a low dose for sleep. I am not taking high doses anymore. Might she be right that any dose of Seroquel can be weight gaining? I currently take 75 mg. Since spring, my dosage has fluctuated. I have been on 37. 5 mg, on 50 mg, and so now on 75 mg.