Synthroid Images. What does Synthroid look like? Note: Multiple pictures are displayed for those medicines available in different strengths, marketed under different brand names and for medicines manufactured by different pharmaceutical companies. I get tons of emails from thyroid cancer (and other thyroid patients) wondering how to best handle starting new thyroid medication or changing doses of thyroid medication. I take cytomel, along with my levothyroxine. I'm on 75 mcg levo, alternating with 88 mcg levo + 5 mcg cytomel daily.. I was at 10 mcg cytomel and had to cut back due to rapid heart rate and palps. Common Side Effects of Armour Thyroid. When used in small doses, there are no common side effects reported with Armour Thyroid. Serious Side Effects of Armour Thyroid Pictures of Synthroid (Levothyroxine Sodium), drug imprint information, side effects for the patient. Hypothyroidism. Synthroid is indicated as a replacement therapy in primary (thyroidal), secondary (pituitary), and tertiary (hypothalamic) congenital or acquired hypothyroidism. Levothyroxine oral tablet doesn’t cause drowsiness, but it can cause other side effects. More common side effects. The more common side effects of levothyroxine can include: Learn about Synthroid (Levothyroxine Sodium) may treat, uses, dosage, side effects, drug interactions, warnings, patient labeling, reviews, and related medications. Synthroid is a remedy which is used as a replacement for naturally produced hormone by thyroid gland. The remedy is indicated for a prolonged treatment. Find patient medical information for Synthroid Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings.