I ve read your query and i understand your concern Cytomel is a thyroid hormone. It works by replacing or supplementing the natural thyroid hormones in the body. Cytomel is a medicine used to treat hypothyroidism (an underactive thyroid gland). It is also used to treat or prevent certain other thyroid conditions such as goiter (an enlarged thyroid gland); inflammation of the thyroid gland; or thyroid hormone deficiency due to surgery, radiation, or certain medications. More common side effects may include: fatigue, changes in your mood, increased heart rate and blood pressure. Less common side effects may include: Rapid or irregular heartbeat, chest pain, shortness of breath, leg cramps, headache, nervousness, irritability, trouble sleeping, tremors, changes in your appetite, weight gain or loss, vomiting, diarrhea, excessive sweating, fever, changes in your menstrual periods, hives, or a rash. Yes, Cytomel can elevate your blood pressure Dietary potassium does not directly raise or lower blood pressure but instead has a passive, beneficial effect on blood pressure via its relationship with sodium. Foods high in potassium citrate include bananas, citrus fruit, dried apricots, fish (especially salmon, flounder, and tuna), green leafy vegetables, legumes, melons, potatoes, poultry, tomatoes, whole-grain cereals, and yogurt. So stock up on potassium-rich foods to help push your blood pressure down. But, before increasing your intake of potassium, check with your doctor. Some people — for example, those with kidney disease — may need to avoid both potassium and salt. Abnormally low or high levels of potassium can cause irregular heartbeats. Take Care