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The Motherisk Nausea and Vomiting of Pregnancy (NVP) Forum

Motherisk receives questions from around the world about morning sickness symptoms, effects, treatments and ways to cope. Those questions and answers are posted here for anyone to read, provided the reader acknowledges and accepts the proviso and disclaimer below.

Antihistamine in Unisom

Date: 2008-03-31

I am 6 weeks along in my first pregnancy, and have been unsuccessful at reducing nausea. It's 24 hours a day and I also have Crohn's disease. I want to try Unisom in conjunction with B6 which has not been helpful on its own, but have a slight intolerance to antihystimines. My heart-rate increases and my pupils dialate, and I get nauseas when I take antihystimines for colds. Does this mean I will have a problem with Unisom?

Unisom contains Benadryl(diphenhydramine) which is an antihistamine, because it also has an anti-nausea effect and is also present in some cold medicines.

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