Good after noon, I went to see the ENT specialist for a cough that has been going on for 5 or 6 months and had tried to take 2 antibiotics that didnt work: amoxilciline and azithromax. I had severe headache a little feeling of unbalance and dizziness with nasal congestion. I also felt extreme bodyache. The ENT prescribed Moxifloxacin and a steroid Cadista. I also take Levothyroxine 100 mg daily. My cough now has decreased and my nasal congestion is geting better but my serious concern now is that I am constantly dizzy and I have severe mucle pain when I walk, especially on my upper thigh. When I stand up, I get very dizzy and cant walk properly. Is there any side effects to what I am taking or is this a normal thing to feel during a sinus inflammation (as the doctor prescribed)?