Synthroid is a natural thyroid supplement that can help you feel better. Take it to replace the thyroid hormones you dont make because of an underactive thyroid gland (hypothyroidism) or take it if your doctor has told you to do so (inhaled liothyronine).
Synthroid, brand name levothroid, is the only levothyroxine sodium product approved for use in dogs and cats. For people with hypothyroidism, Synthroid helps them feel better by working as directed on each tablet. Therapeutic levels are reached much faster than they would be using synthetic T4 medications like liothryonine (LiT3), L-thyroxine sodium (TT4), or cyproheptadine hydrochloride. Each dose provides 4 mcg of T4 hormone per pill; daily dosing results in reaching TSH normal range within one week after starting treatment with Generic Levoxyl capsules containing thyroxine sodium USP 30 mg tablets contain 0 84 mcg 10 12 3 5 79mcg 11 13 2 6 78mcg 1 29 4 7 77μ g 14 15 1 8 76μ g 16 17 1 9 75μ g 18 19 U s p e r i n v o l u t i o n .