Hi. I wonder if anyone can help me.I am on 2 and a half grains of armour and have been on this since April this year via Dr. Skinner. For a good few months I felt the best I ever felt in 5 years.I was also taking Nutri Adrenal Extra ( 2 a day ) .However, I have been feeling very tired and have had my heart racing ( it feels awful) and a slight tightness across my chest.I also have joint pain back which I didn't have either when I started the armour.Dr. S mentioned that if I felt I could up the arnour to 3 grains but am very scared to do this.I just dont know if the symptoms are caused by too much or too little meds.I would appreciate help. Ps. My GP is now prescribing the armour for me but I am rather concerned that she will go only with the blood results and not how I am feeling. Thanks Kay.