Has anyone had any success with Nexoprin?

My wife has been suffering from migraines for about 10 years.  At first it seemed they would only come with triggers like alcohol, nitrates, etc.  Over the years they have beocome more frequent and seemingly have developed around her menstral cycle as well.  When we had our 2 year old son they went away even when she was breastfeeding.  However, the last 3 months they have been coming more frequent (probably 6-10 /month) and much more severe, even lasting days at a time.  She used to sell Imitrex (in fact she had been having migranes for years before she realized in a training class that all the symptoms of migraines they were going over were what she was experiencing, not once did a doctor ever diagnose her until after the fact) and it has worked for her but as they have become more frequent, she is only supposed to take 2/ week, there are days she goes without relief.  We are also interested in trying for another baby and dont want to have all these prescriptions going through her body but I dont know if she will be able to handle the 1st trimester w/ out any relief.  If people have had success with this product I would be interested in asking her OB and Nerologist if this would be a safe product.  Thanks for any and all of your help.