i was taking 90 mg of NT Thyroid and my t4 came back low so the Dr. raised my dosage to 120. Since NT Thyroid doesn't come in 120mg I was given Armour. I have been on it about 5 weeks and I noticed fluttering in my chest, dizziness and my blood pressure was elevated so I went and got my blood work done. No results yet but I stopped my meds for a couple of days and felt better. The third day I took half dose (60 mg) and within a short time started with the dizziness and fluttering. I have a call in to the Dr. to find out about blood work but wondered if anyone else had these kind of reaction or if it is because I'm on too high dose. I thought 90 to 120 was quite a big jump.