Hi Lalab ,
Armour thyroid when taken in correct dosage generally causes no
side effects . However serious
side effects do occur when the dosage is too high . Symptoms of Hyperthyroidism may occur which include – Heart palpitations , Tachycardia, Heart attack , chest pain , Heart failure , difficulty breathing , Hypertension , Insomnia , anxiety , muscle weakness and a lot of other symptoms . So first of all you need to get the dose of Armour Thyroid adjusted .