Common side effects are: shortness of breath, dizziness, diarrhea, vomiting, headache, hot flashes, weakness, cough, dry mouth, skin rash, sweating, abdominal pain and bone pain.
Some less common symptoms are vaginal bleeding, weight gain, tiredness, chills, fever, breast pain, and itching. In case of an overdose, it is recommended to contact your poison control center.
It wasn't with this study, but it throws off their period, and can possibly cause birth defects, if she becomes pregnant while on dex.