How can nausea and vomiting be lessened during menses?

EAT!! However sick you feel having an empty stomach will only make it worse. 1. Plain toast and strong black tea with a spoon of crushed ginger is often useful. 2. Prokinetic agents like metoclopramide taken half an hour before a meal can also help, although this drug may not be available in the US. 3. Another "home remedy" is chewing Bishop's Weed, aka Ajwain which can be found in Indian stores. Chewing a pinch of these tiny grains reieves nausea fairly quickly, even though they have kind of kick and will make you eyes water!