levothyroxine
Skip to the navigationPronunciation: LEE voe thye ROX een
Brand: Levothroid, Levoxyl, Synthroid, Tirosint, Unithroid
Euthyrox 0.1 mg
round, yellow, imprinted with 100 M

Levothroid 0.025 mg cap
oblong, orange, imprinted with T 4, 25

Levothroid 0.025 mg
round, orange, imprinted with LOGO, 25

Levothroid 0.05 mg cap
oblong, white, imprinted with T 4, 50

Levothroid 0.05 mg
round, white, imprinted with LOGO, 50

Levothroid 0.075 mg cap
oblong, lavender, imprinted with T 4, 75

Levothroid 0.075 mg
round, gray, imprinted with LOGO, 75

Levothroid 0.088 mg cap
oblong, green, imprinted with T 4, 88

Levothroid 0.088 mg
round, green, imprinted with LOGO, 88

Levothroid 0.1 mg cap
oblong, yellow, imprinted with T 4, 100

Levothroid 0.1 mg
round, yellow, imprinted with LOGO, 100

Levothroid 0.112 mg cap
oblong, pink, imprinted with T 4, 112

Levothroid 0.112 mg
round, pink, imprinted with LOGO, 112

Levothroid 0.125 mg cap
oblong, brown, imprinted with T4, 125

Levothroid 0.125 mg
round, purple, imprinted with LOGO, 125

Levothroid 0.137 mg
round, blue, imprinted with LOGO, 137

Levothroid 0.15 mg cap
oval, blue, imprinted with T 4, 150

Levothroid 0.15 mg
round, blue, imprinted with LOGO, 150

Levothroid 0.175 mg cap
oblong, lavender, imprinted with T 4, 175

Levothroid 0.175 mg
round, turquoise, imprinted with LOGO, 175

Levothroid 0.2 mg cap
oblong, pink, imprinted with T 4, 200

Levothroid 0.2 mg
round, pink, imprinted with LOGO, 200

Levothroid 0.3 mg cap
oblong, green, imprinted with T 4, 300

Levothroid 0.3 mg
round, green, imprinted with LOGO, 300

Levothyroxine 0.025 mg-MYL
oblong, orange, imprinted with M, L 4

Levothyroxine 0.05 mg-MYL
oblong, white, imprinted with M, L 5

Levothyroxine 0.05 mg-URL
round, white, imprinted with 3912 V

Levothyroxine 0.075 mg-MYL
oblong, gray, imprinted with M, L 6

Levothyroxine 0.088 mg-MYL
oblong, green, imprinted with M, L 7

Levothyroxine 0.1 mg-MYL
oblong, yellow, imprinted with M, L 8

Levothyroxine 0.1 mg-SAN
oblong, yellow, imprinted with 100, GG 335

Levothyroxine 0.1 mg-URL
round, yellow, imprinted with 3914 V

Levothyroxine 0.112 mg-MYL
oblong, pink, imprinted with M, L 9

Levothyroxine 0.112 mg-SAN
oblong, pink, imprinted with 112, GG 336

Levothyroxine 0.125 mg-MYL
oblong, gray, imprinted with M, L 10

Levothyroxine 0.125 mg-SAN
oblong, beige, imprinted with GG 337, 125

Levothyroxine 0.125 mg-URL
round, peach, imprinted with 3919 V

Levothyroxine 0.15 mg-MYL
capsule, blue, imprinted with M, L 11

Levothyroxine 0.15 mg-SAN
capsule, blue, imprinted with 150, GG 338

Levothyroxine 0.15 mg-URL
round, blue, imprinted with 3915 V

Levothyroxine 0.175 mg-MYL
oblong, lavender, imprinted with M, L 12

Levothyroxine 0.2 mg-MYL
oblong, red, imprinted with M, L 13

Levothyroxine 0.2 mg-URL
round, pink, imprinted with 3915 V

Levothyroxine 0.3 mg-MYL
oblong, dark green, imprinted with M, L 14

Levothyroxine 137 mcg-MYL
oblong, blue, imprinted with M, L 15

Levoxyl 0.025 mg
peanut, orange, imprinted with LEVOXYL, dp 25

Levoxyl 0.05 mg
peanut, white, imprinted with LEVOXYL, dp 59, dp 50

Levoxyl 0.075 mg
oval, purple, imprinted with LEVOXYL, dp 75

Levoxyl 0.088 mg
oval, green, imprinted with LEVOXYL, dp 88

Levoxyl 0.15 mg
oval, blue, imprinted with LEVOXYL, dp 150

Levoxyl 0.175 mg
oval, turquoise, imprinted with LEVOXYL, dp 175

Levoxyl 0.3 mg
oval, green, imprinted with LEVOXYL, dp 300

Levoxyl 100 mcg
oval, yellow, imprinted with LEVOXYL, dp 100

Levoxyl 112 mcg
oval, pink, imprinted with LEVOXYL, dp 112

Levoxyl 125 mcg
oval, brown, imprinted with LEVOXYL, dp 125

Levoxyl 137 mcg
oval, blue, imprinted with LEVOXYL, dp 137

Levoxyl 200 mcg
oval, pink, imprinted with LEVOXYL, dp 200

Synthroid 0.025 mg
round, orange, imprinted with FLINT, 25

Synthroid 0.025 mg-ABB
round, orange, imprinted with SYNTHROID, 25

Synthroid 0.05 mg
round, white, imprinted with FLINT, 50

Synthroid 0.05 mg-ABB
round, white, imprinted with SYNTHROID, 50

Synthroid 0.075 mg
round, lavender, imprinted with FLINT, 75

Synthroid 0.075 mg-ABB
round, lavender, imprinted with SYNTHROID, 75

Synthroid 0.088 mg
round, green, imprinted with FLINT, 88

Synthroid 0.088 mg-ABB
round, green, imprinted with SYNTHROID, 88

Synthroid 0.1 mg
round, yellow, imprinted with FLINT, 100

Synthroid 0.1 mg-ABB
round, yellow, imprinted with SYNTHROID, 100

Synthroid 0.112 mg
round, pink, imprinted with FLINT, 112

Synthroid 0.112 mg-ABB
round, pink, imprinted with SYNTHROID, 112

Synthroid 0.125 mg
round, beige, imprinted with FLINT, 125

Synthroid 0.125 mg-ABB
round, brown, imprinted with SYNTHROID, 125

Synthroid 0.137 mg
round, blue, imprinted with SYNTHROID, 137

Synthroid 0.15 mg
round, blue, imprinted with FLINT, 150

Synthroid 0.15 mg-ABB
round, blue, imprinted with SYNTHROID, 150

Synthroid 0.175 mg
round, purple, imprinted with FLINT, 175

Synthroid 0.175 mg-ABB
round, purple, imprinted with SYNTHROID, 175

Synthroid 0.2 mg
round, pink, imprinted with FLINT, 200

Synthroid 0.2 mg-ABB
round, pink, imprinted with SYNTHROID, 200

Synthroid 0.3 mg-ABB
round, green, imprinted with SYNTHROID, 300

Unithroid 0.025 mg
round, orange, imprinted with JSP, 513

Unithroid 0.088 mg
round, green, imprinted with JSP, 561

Unithroid 0.1 mg
round, yellow, imprinted with JSP, 516

Unithroid 0.112 mg
round, pink, imprinted with JSP, 562

Unithroid 0.15 mg
round, blue, imprinted with JSP, 520

Unithroid 0.175 mg
round, lavender, imprinted with JSP, 563

Unithroid 0.3 mg
round, green, imprinted with JSP, 523

What is the most important information I should know about levothyroxine?
You may not be able to take this medication if you have certain medical conditions. Tell your doctor if you have an untreated or uncontrolled adrenal gland disorder, a thyroid disorder called thyrotoxicosis, or if you have any recent or current symptoms of a heart attack.
Levothyroxine should not be used to treat obesity or weight problems. Dangerous side effects or death can occur from the misuse of levothyroxine, especially if you are taking any other weight-loss medications or appetite suppressants.
What is levothyroxine?
Levothyroxine is a replacement for a hormone normally produced by your thyroid gland to regulate the body's energy and metabolism. Levothyroxine is given when the thyroid does not produce enough of this hormone on its own.
Levothyroxine treats hypothyroidism (low thyroid hormone). Levothyroxine is also used to treat or prevent goiter (enlarged thyroid gland), which can be caused by hormone imbalances, radiation treatment, surgery, or cancer.
Levothyroxine may also be used for purposes not listed in this medication guide.
What should I discuss with my healthcare provider before taking levothyroxine?
Levothyroxine should not be used to treat obesity or weight problems. Dangerous side effects or death can occur from the misuse of levothyroxine, especially if you are taking any other weight-loss medications or appetite suppressants.
Since thyroid hormone occurs naturally in the body, almost anyone can take levothyroxine. However, you may not be able to take this medication if you have certain medical conditions.
To make sure levothyroxine is safe for you, tell your doctor if you have:
- a thyroid disorder called thyrotoxicosis;
- heart disease, coronary artery disease, or a history of blood clots;
- diabetes (insulin or oral diabetes medication doses may need to be changed when you start taking levothyroxine);
- anemia (lack of red blood cells);
- osteoporosis, or low bone mineral density;
- problems with your pituitary gland;
- any food or drug allergies;
- an untreated or uncontrolled adrenal gland disorder; or
- if you have recently had a heart attack, or are having any symptoms of a heart attack (chest pain or heavy feeling, pain spreading to the jaw or shoulder, nausea, sweating, general ill feeling).
Tell your doctor if you have recently received radiation therapy with iodine (such as I-131).
Levothyroxine is not expected to harm an unborn baby. If you become pregnant while taking levothyroxine, do not stop taking the medicine without your doctor's advice. Having low thyroid hormone levels during pregnancy could harm both mother and baby. Your dose needs may be different during pregnancy.
Levothyroxine can pass into breast milk, but it is not expected to be harmful to a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby. Your dose needs may be different while you are nursing.
How should I take levothyroxine?
Follow all directions on your prescription label. Your doctor may occasionally change your dose to make sure you get the best results. Do not take this medicine in larger or smaller amounts or for longer than recommended.
Do not share this medication with another person, even if they have the same symptoms you have.
Levothyroxine works best if you take it on an empty stomach, at least 30 minutes before breakfast. Follow your doctor's dosing instructions and try to take the medicine at the same time each day.
It is very important to take Levoxyl with a full glass (8 ounces) of water. The Levoxyl tablet can dissolve very quickly and swell in the throat, possibly causing choking or gagging.
While using levothyroxine, you may need frequent medical tests.
Tell any doctor or dentist who treats you that you are using levothyroxine.
Store at room temperature away from moisture and heat.
It may take several weeks before your body starts to respond to levothyroxine. Keep using this medicine even if you feel well. You may need to use levothyroxine for the rest of your life to replace the thyroid hormone your body cannot produce.
What happens if I miss a dose?
Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
Overdose symptoms may include headache, leg cramps, tremors, feeling nervous or irritable, chest pain, shortness of breath, and fast or pounding heartbeats.
What should I avoid while taking levothyroxine?
Certain medicines can make levothyroxine less effective if taken at the same time. If you use any of the following drugs, avoid taking them within 4 hours before or 4 hours after you take levothyroxine:
- calcium carbonate (Alka-Mints, Calcium Oyster Shell, Caltrate, Os-Cal, Oyster Shell Calcium, Rolaids Soft Chew, Tums, and others);
- cholestyramine, colestipol;
- ferrous sulfate iron supplement;
- sucralfate;
- sodium polystyrene sulfonate (Kalexate, Kayexalate, Kionex); or
- antacids that contain aluminum or magnesium --Acid Gone, Gaviscon, Maalox, Milk of Magnesia, Mintox, Mylanta, Pepcid Complete, and others).
Avoid the following food products, which can make your body absorb less levothyroxine: infant soy formula, cotton seed meal, walnuts, and high-fiber foods.
What are the possible side effects of levothyroxine?
Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have a serious side effect such as:
- fast or irregular heart rate;
- fever, hot flashes, sweating;
- sleep problems (insomnia);
- changes in your menstrual periods; or
- vomiting, diarrhea, appetite changes, weight changes.
Common side effects may include mild hair loss.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What other drugs will affect levothyroxine?
Many other medicines can be affected by your thyroid hormone levels. Other medicine may also increase or decrease the effects of levothyroxine.
Many drugs can interact with levothyroxine and not all possible interactions are listed in this medication guide.
Tell your doctor about all medications you use, start using, or stop using during your treatment with levothyroxine. This includes prescription, over-the-counter, vitamin, and herbal products. Give a list of all your medicines to any healthcare provider who treats you.
Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.
Copyright 1996-2017 Cerner Multum, Inc. Version: 11.04. Revision date: 2/9/2016.