Levoxyl; Synthroid; Tirosint; Unithroid; Unithroid Direct
- Do not use this drug to treat obesity or for weight loss. Very bad and sometimes deadly side effects may happen with this drug if it is taken in large doses or with other drugs for weight loss. Talk with the doctor.
- It is used to add thyroid hormone to the body.
- It is used to manage thyroid cancer.
- It may be given to your child for other reasons. Talk with the doctor.
- If your child has an allergy to this drug or any part of this drug.
- If your child is allergic to any drugs like this one or any other drugs, foods, or other substances. Tell the doctor about the allergy and what signs your child had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
- If your child has any of these health problems: Overactive thyroid gland, recent heart attack, or weak adrenal gland.
Tablets and capsules:
- If your child has trouble swallowing.
- Tell all of your child’s health care providers that your child is taking this drug. This includes your child’s doctors, nurses, pharmacists, and dentists.
- Do not run out of this drug.
- It may take several weeks to see the full effects.
- If your child has high blood sugar (diabetes), you will need to watch his/her blood sugar closely.
- Have blood work checked as you have been told by the doctor. Talk with the doctor.
- This drug may cause weak bones (osteoporosis) with long-term use. Talk with the doctor to see if your child has a higher chance of weak bones, or if you have any questions.
- This drug may affect how much of some other drugs are in the body. If your child is taking other drugs, talk with the doctor. Your child may need to have blood work checked more closely while taking this drug with other drugs.
- If giving to your child, the dose of this drug may need to be changed as your child’s weight changes. Have your child’s weight checked often. Talk with the doctor before changing your child’s dose.
- This drug may affect growth in children and teens in some cases. They may need regular growth checks. Talk with the doctor.
If your child is pregnant or breast-feeding a baby:
- Talk with the doctor if your child is pregnant, becomes pregnant, or is breast-feeding a baby. You will need to talk about the benefits and risks of using this drug.
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Chest pain or pressure or a fast heartbeat.
- A heartbeat that does not feel normal.
- Shortness of breath, a big weight gain, or swelling in the arms or legs.
- Lump on the neck.
- Feeling more or less hungry.
- A change in weight without trying.
- Loose stools (diarrhea).
- Stomach cramps.
- Throwing up.
- Feeling irritable.
- Feeling nervous and excitable.
- Not able to sleep.
- Bothered by heat.
- Sweating a lot.
- Leg cramps.
- Muscle weakness.
If your child has menstrual periods:
- Period (menstrual) changes.
- Hair loss may happen in some people in the first few months of using this drug. This most often goes back to normal.
All oral products:
- Give on an empty stomach 30 minutes before breakfast.
- Do not give your child iron products, antacids that have aluminum or magnesium, or calcium carbonate within 4 hours before or 4 hours after taking this drug.
- Some other drugs may need to be given at some other time than this drug. If your child takes other drugs, check with the doctor or pharmacist to see if you need to give them to your child at some other time than this drug.
- Some foods like soybean flour (infant formula) may change how this drug works in your body. Talk with your doctor.
- If your child drinks grapefruit juice or eats grapefruit often, talk with your child’s doctor.
- To gain the most benefit, do not miss giving your child doses.
- Keep giving this drug to your child as you have been told by your child’s doctor or other health care provider, even if your child feels well.
- Have your child swallow whole. Do not let your child chew, break, or crush.
- Some products may cause choking, gagging, or trouble swallowing. These products must be given with a full glass of water. Ask the pharmacist if your child needs to take this product with a full glass of water.
- If your child cannot swallow pills, the tablet may be crushed and mixed in 1 to 2 teaspoons (5 to 10 mL) of water right before giving to your child.
Tablets and capsules:
- There is more than 1 brand of this drug. One brand cannot safely be used for the other. The doctor will tell you about any needed change.
- You may put this drug right in your child’s mouth or you may mix it with water. If mixing with water, empty the contents into a cup with water in it. Squeeze the container over the cup at least 5 times until no more drug comes out. Stir well.
- After mixing, give the dose right away. Do not store for future use.
- Rinse cup with more water and have your child drink.
- Give this drug with water only; do not give with other drinks.
- It is given as a shot into a vein.
All oral products:
- Give a missed dose as soon as you think about it.
- If it is close to the time for your child’s next dose, skip the missed dose and go back to your child’s normal time.
- Do not give 2 doses at the same time or extra doses.
- Call your child’s doctor to find out what to do.
All oral products:
- Store at room temperature.
- Protect from light.
- Store in a dry place. Do not store in a bathroom.
- Protect from heat.
- Do not take this drug out of the blister pack until you are ready to give this drug to your child. Give this drug right away after opening the blister pack. Do not store the removed drug for future use.
- Store in protective pouch until ready for use.
- Throw away 15 days after opening the pouch.
- If you need to store this drug at home, talk with your child’s doctor, nurse, or pharmacist about how to store it.
- Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
- Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
- If your child’s symptoms or health problems do not get better or if they become worse, call your child’s doctor.
- Do not share your child’s drug with others and do not give anyone else’s drug to your child.
- Keep a list of all your child’s drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your child’s doctor.
- Talk with your child’s doctor before giving your child any new drug, including prescription or OTC, natural products, or vitamins.
- Some drugs may have another patient information leaflet. If you have any questions about this drug, please talk with your child’s doctor, nurse, pharmacist, or other health care provider.
- If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.