Answer by
ramnath (58)
Synthroid contains synthetic crystalline. They are round and color coded and it is known as levothyroxine sodium and this the type of drug. It is produced in thyroid gland. It is used for hyperthyroidism. synthroid causes side effects like chest pain, difficult in breathing, irregular heartbeat,swelling of mouth,unusual weight loss or weight gain. so always consult doctor about synthroid usage.