Dump the Phenergan in a drawer and ask your doctor for the generic form of Zofran. It is called Ondansetron. They are sublingual - melt on your tongue. Taste a little like a baby asprin. They come in 4mg or 8 mg. I have both. I take whichever one I think I might need. Obviously the 8 is stronger than the 4. The only side effect from the 8mg is a headache. I do not get headaches from the 4mg. If I take several in a day my eyes get a little blurry, but other than that there is no side effects. They do not make me sleepy. This is a drug that people getting chemo often take. You can even take it if you are pregnant.
Be sure to ask for the generic form though as the brand name are hundreds of dollars more. I get a 3 month supply at 4 per day through Medco for 80.00.
They work in 3 or 4 minutes. It is a miracle. I keep them stashed in every pocket, purse. jacket, at work, even in the potty where the nausea often hits me suddenly.
You won't ever take Phenergan again!