mjewell, Sominex in the US does not contain phenergan. You can't get phenergan over the counter in the US. Sominex over here contains diphenhydramine, which is more commonly known as the allergy drug Benadryl. It is an antihistamine, which means it has *some* power to dull nausea, but not enough for it to really be used as an anti-emetic.


Nikki