How Will the Keystone XL Pipeline Be Built? If President Obama approves the hot-button Keystone XL pipeline, TransCanada has plenty of work to do to build the Montana-to-Nebraska connection. This is how its engineers plan to do it.
Side effects of a dose of levothyroxine that is too low would be similar to the symptoms of hypothyroidism. Symptoms of hypothyroidism, or underactive thyroid, include fatigue, weight gain, and constipation.
Drugs that affect thyroid function in patients taking levothyroxine. Drugs that affect TSH or thyroid function at the level of the hypothalamus or pituitary are only a small subset of drugs that can affect thyroid function, and these drugs will be the focus of this review.