I was prescribed Dex for the 6 days after the AC infusion due to nausea causing me to not eat and drink and therefore became dehydrated. Had to learn the hard way that drinking water on Chemo is super important. Each time I came off the Dex I was always surprised by how mentally crap I felt. Every other week I was crying and swearing I wasn't doing this sh*t anymore. By the time I was due for the next infusion I started to feel normal again. Certainly no one had warned me about the mood swings due to the drugs for the side effects.