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Unithroid Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
Unithroid (levothyroxine sodium) Tablets are a replacement for the hormone produced by the thyroid gland that regulates the body's energy and metabolism. It is used as treatment for hypothyroidism and the prevention of an enlarged thyroid gland called a goiter. Unithroid is available in generic form. Side effects of include hair loss, headache, sleep problems, nervous or irritable feeling, fever, hot flashes, sweating, changes in menstrual cycle, and appetite and weight changes.
Unithroid is taken in a single daily dose preferably half an hour to one hour before breakfast. Talk to your doctor about your individual recommended dosage amount. Unithroid may interact with medications such as Citracal or other calcium carbonates, iron supplements, Maalox or other antacids, as well as cholesterol-lowering drugs and should be taken at least 4 hours apart from taking these other medications. Tell your doctor about all medications and supplements you take. You should not use Unithroid if you have had a heart attack, thyroid disorder, or an adrenal gland disorder. Talk to your doctor if you are pregnant, become pregnant during treatment, or plan on breastfeeding as dosage of Unithroid may need to be increased. Do not stop taking this medication suddenly.
Our Unithroid (levothyroxine sodium) Tablets Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
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 is Patient Information in Detail?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
Unithroid in Detail - Patient Information: Side Effects
Get emergency medical help if you have any of these 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:
- sleep problems (insomnia);
- feeling nervous or irritable;
- fever, hot flashes, sweating;
- pounding heartbeats or fluttering in your chest;
- changes in your menstrual periods; or
- appetite changes, weight changes.
Less serious side effects may include mild hair loss.
Read the entire detailed patient monograph for Unithroid (Levothyroxine Sodium) »
What is Patient Information Overview?
A concise overview of the drug for the patient or caregiver from First DataBank.
Unithroid Overview - Patient Information: Side Effects
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor immediately if any of these unlikely but serious effects of high thyroid hormone levels occur: increased sweating, sensitivity to heat, mental/mood changes (such as nervousness, mood swings), tiredness, diarrhea, shaking (tremor), headache, shortness of breath.
Get medical help right away if any of these rare but serious effects of high thyroid hormone levels occur: chest pain, fast/pounding/irregular heartbeat, swelling hands/ankles/feet, seizures.
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Read the entire patient information overview for Unithroid (Levothyroxine Sodium)»
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Unithroid FDA Prescribing Information: Side Effects
Musculoskeletal: tremors, muscle weakness;
Pseudotumor cerebri has been reported in children receiving levothyroxine therapy. Seizures have been reported rarely with the institution of levothyroxine therapy. Inadequate levothyroxine dosage will produce or fail to ameliorate the signs and symptoms of hypothyroidism.
Hypersensitivity reactions to inactive ingredients have occurred in patients treated with thyroid hormone products. These include urticaria, pruritus, skin rash, flushing, angioedema, various Gl symptoms (abdominal pain, nausea, vomiting and diarrhea), fever, arthralgia, serum sickness and wheezing. Hypersensitivity to levothyroxine itself is not known to occur.
Read the entire FDA prescribing information for Unithroid (Levothyroxine Sodium) »
Additional Unithroid Information
Unithroid - User Reviews
Unithroid User Reviews
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Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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