If you have been . Diagnosed with sleep apnea, the treatment options are cpap mask oral sleep appliance surgury.
Not much. Breathe right strips can help a bit. Not much else is of any use.
Yes but be careful. If the apnea is mild there are mandibular advancement devices that can be worn and purchased over the counter that can help. It is best to treat sleep apnea with a sleep specialist because it is a serious medical problem.