Are there any medicines I can take for my sleep apnea?

Sleep Apnea. No, the best treatment is the cpap.
Some helpful hints. There are things that can be done to help lessen symptoms and depending on severity, may eliminate them. Weight loss, avoidance of sedating chemicals or medications, avoiding supine sleep can help. There is an oral device that a dentist can make and some medical therapies from an ENT that can help. Pap therapy is still the gold standard treatment and splints the airways open.
There is no medicine. For sleep apnea treatment, except CPAP or oral appliance and the last resort is surgery. But there are lots of medicine if you need help to sleep. Consult with your family physician to determine what is best for you.