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- $Unique_ID{BRK03201}
- $Pretitle{}
- $Title{levothyroxine}
- $Subject{Levothroid R-P Roerer sodium Levoxine Daniels Boots Synthroid Thyroid
- hormone levothyroxine hormones gland cancer enlarged}
- $Volume{}
- $Log{
- Synthroid 0.025 mg*0320101.scf
- Synthroid 0.05 mg*0320102.scf
- Synthroid 0.1 mg*0320103.scf
- Synthroid 0.15 mg*0320104.scf
- Synthroid 0.2 mg*0320105.scf
- Synthroid 0.3 mg*0320106.scf}
-
- Copyright (C) 1993 Publications International, Ltd.
-
-
- levothyroxine
- ------------------------------------------------------------------------------
-
- BRAND NAMES (Manufacturers)
-
- Levothroid (R-P Roerer)
- levothyroxine sodium (various manufacturers)
- Levoxine (Daniels)
- Synthroid (Boots)
-
- TYPE OF DRUG
-
- Thyroid hormone
-
- INGREDIENT
-
- levothyroxine
-
- DOSAGE FORM
-
- Tablets (0.025 mg, 0.05 mg, 0.075 mg, 0.088 mg, 0.1 mg, 0.112 mg, 0.125
- mg, 0.15 mg, 0.175 mg, 0.2 mg, and 0.3 mg)
-
- STORAGE
-
- Levothyroxine tablets should be stored at room temperature in a tightly
- closed, light-resistant container.
-
- USES
-
- Levothyroxine is prescribed to replace natural thyroid hormones that are
- absent because of a disorder of the thyroid gland. It is also used to help
- decrease the size of enlarged thyroid glands and to treat thyroid cancer.
- This product is prepared synthetically (artificially) but is exactly like the
- natural thyroid hormone that is produced by the human body.
-
- TREATMENT
-
- Levothyroxine tablets should be taken on an empty stomach with a full
- glass of water. If the drug upsets your stomach, ask your doctor if you can
- take it with food or milk.
- In order to get used to taking this drug, try to take it at the same time
- each day. Try not to miss any doses. If you do miss a dose of this drug,
- take it as soon as possible, unless it is almost time for the next dose. In
- that case, do not take the missed dose at all; just return to your regular
- dosing schedule. Do not double the next dose. If you miss more than one or
- two doses, contact your doctor.
-
- SIDE EFFECTS
-
- Minor.
-
- Constipation; dry, puffy skin; fatigue; headache; listlessness; or weight
- gain. These effects are symptoms of an underactive thyroid. They should
- disappear after your body adjusts to the medication. It could take several
- weeks for the medication to take effect. Consult your doctor if these
- symptoms persist.
-
- Major.
-
- Tell your doctor about any side effects that are persistent or
- particularly bothersome. Most of the major side effects associated with this
- drug are the result of too large a dose. The dosage of this medication may
- need to be adjusted if you experience any of the following side effects:
- chest pain, diarrhea, fever, heat intolerance, insomnia, irritability, leg
- cramps, menstrual irregularities, muscle aches, nervousness, palpitations,
- shortness of breath, sweating, trembling, or weight loss. CHECK WITH YOUR
- DOCTOR.
-
- INTERACTIONS
-
- Levothyroxine interacts with several other types of drugs:
- 1. Dosing requirements for digoxin, insulin, or oral antidiabetic agents
- may change when levothyroxine is used.
- 2. The effects of oral anticoagulants (blood thinners, such as warfarin)
- may be increased by levothyroxine, which could lead to bleeding complications.
- 3. Cholestyramine and colestipol prevent the body's absorption of
- levothyroxine. At least four hours should separate doses of levothyroxine and
- one of these drugs.
- 4. Oral contraceptives (birth control pills) and estrogen-containing
- drugs may change dosage requirements.
- 5. Phenobarbital may decrease the effects of levothyroxine; but tricyclic
- antidepressants and over-the-counter (nonprescription) allergy, asthma, cough,
- cold, sinus, and diet medications may increase its side effects.
- BE SURE TO TELL YOUR DOCTOR about any medications you are currently
- taking, especially any listed above.
-
- WARNINGS
-
- * Tell your doctor about unusual or allergic reactions you have had to
- any medications, especially to thyroid hormone, levothyroxine, or liothyronine
- or to any other substances such as foods, preservatives, or dyes.
- * Tell your doctor if you now have or if you have ever had angina
- pectoris, diabetes mellitus, heart disease, high blood pressure, kidney
- disease, or an underactive adrenal or pituitary gland.
- * If you have an underactive thyroid gland, you may need to take this
- medication for life. You should not stop taking it unless you first check
- with your doctor.
- * Before having surgery or any other medical or dental treatment, be sure
- to tell your doctor or dentist that you are taking levothyroxine.
- * Over-the-counter allergy, asthma, cough, cold, sinus, and diet
- medications can increase the side effects of levothyroxine. Therefore, check
- with your doctor or pharmacist before taking ANY of these products.
- * Although many thyroid products are on the market, they are not all
- bioequivalent; that is, they may not all be absorbed into the bloodstream at
- the same rate or have the same overall activity. DON'T CHANGE BRANDS of this
- drug without first consulting your doctor or pharmacist to make sure you are
- receiving an equivalent product.
- * Some of these products contain the color additive FD&C Yellow No. 5
- (tartrazine), which can cause allergic-type reactions (fainting, rash,
- difficulty in breathing) in certain susceptible individuals.
- * Tell your doctor if you are pregnant. Levothyroxine does not readily
- cross the placenta, and the drug appears to be safe during pregnancy.
- However, your dosing of levothyroxine may change during pregnancy. Also, tell
- your doctor if you are breast-feeding an infant.
-
- ----------------
-
- The material contained here is "FOR INFORMATION ONLY" and should not replace
- the counsel and advice of your personal physician. Promptly consulting your
- doctor is the best path to a quick and successful resolution of any medical
- problem.
-