Synthroid (T4, Levothyroxine) 300 mcg 90 tabs Mylan
Information about the drug
Levothyroxine is a synthetically produced form of thyroxine, a major endogenous hormone secreted by the thyroid gland.15 Also known as L-thyroxine or the brand name product Synthroid, levothyroxine is used primarily to treat hypothyroidism, a condition where the thyroid gland is no longer able to produce sufficient quantities of the thyroid hormones T4 (tetraiodothyronine or thyroxine) and T3 (triiodothyronine or Liothyronine), resulting in diminished down-stream effects of these hormones. Without sufficient quantities of circulating thyroid hormones, symptoms of hypothyroidism begin to develop such as fatigue, increased heart rate, depression4, dry skin and hair, muscle cramps, constipation, weight gain, memory impairment, and poor tolerance to cold temperatures.
It is recommended that you take the drug first thing in the morning with a full glass of water, about an hour before breakfast. You should avoid food and other medications for an hour after taking levothyroxine, and make sure to take it four hours before or after taking iron supplements, calcium supplements, or antacids. At your doctor’s discretion, you might need to avoid foods that affect the absorption of levothyroxine, including soybeans, walnuts, grapefruit, and high-fiber foods.
Common side effects include nausea, weight changes, stomach upset, mood changes, and headaches. Tell your doctor straight away if you have symptoms such as chest pain, changes in heartbeat, uncontrollable shaking, nervousness, anxiety, irritability, sleep difficulties, shortness of breath, or excessive sweating, as these can be a sign of a serious problem. Also, make sure to inform your doctor of all other medications (including over-the-counter drugs and supplements) you are taking in order to prevent drug interactions. This paragraph is only an overview, and it is not intended to replace medical counseling; please consult your pharmacist and/or medical provider for more comprehensive information.
Founded in 1961, Mylan Pharmaceuticals is the second largest provider in the U.S. and distributes more than 388 drugs in the country. Mylan serves 165 countries in total through its range of product offerings. The company has 40+ manufacturing sites including in the U.S., India, and Ireland.