Scientific Make Up-Composition Of The March Birthstone. Aquamarines vary in color from deep blue to bluish-green, with differing intensities due to the varying quantities of iron in the beryl crystal. Naturally occurring deep blue aquamarine stones are rare, expensive and in high demand.
A Stacy Wiegman, PharmD , Pharmacy, answered. Zofran (ondansetron) acts fairly quickly. For people who are undergoing chemotherapy, it is usually given 30 minutes before starting the chemo so that it is working when chemo starts. To prevent nausea and vomiting after surgery, it is usually given one hour before the operation.
Zofran works by blocking chemicals in the body responsible for nausea and vomiting. It can be taken orally, via a rapidly disintegrating tablet (ODT), or through injections. Pregnant women experiencing nausea and/or vomiting, however, are usually given the oral tablet, which typically starts around 8 mg per tablet, taken once or twice per day.