Agree with Cptn Sid. .....
in addition, keep your eye on the horizon and stay on deck if queezy. That will usually get you 'over the hump' with a queezy stomach. Everyone is different ... I prefer chewing on fresh ginger root and use a LARGE TIGHT BELT pulled up tight on my pants, sometimes I'll wear a second belt across the 'middle' when the ocean swells are 'high' ... everyone is different. Hydration for most seem the be the key ... LOTS of fluids. For most folks, it usually takes 2-3 days to be over the queezies. MY problem is being land-sick ... usually no seasickness but I get LAND sick for days (the ground keeps severely moving somehow) when I leave the boat after a long passage. Caution --- if ALL sea-sickness remedies fail and you meet Mr. Mal deMar and his sidekick "Ralph' ... what ever you do, if you feel a 'hairy ring' coming up your throat during a 'spasm' ... quickly and forcefully SWALLOW to push that ring back down. If you dont, and that hairy ring escapes .... your entire body will turn totally inside out' !!!! ;-)I think sometimes that getting seasick is totally a state of mind ... dont THINK about getting sick, dont talk yourself into becoming seasick, 'change the subject' when speaking to yourself ... but then again everyone is different. ;-)