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.
Safety Considerations. 1  Thyroid hormones, including SYNTHROID, should not be used for the treatment of obesity or weight loss. 2  Do not use SYNTHROID if you have uncorrected adrenal problems. 3  Excessive amounts of levothyroxine sodium therapy have been associated with decreased bone strength, especially in women after menopause.