Levothyroxine
- Generic Synthroid is used for:
Treating low
thyroid activity and treating or suppressing different types of
goiters. It is also used with surgery and other medicines for
managing certain types of thyroid cancer.
Levothyroxine
- Generic Synthroid is a thyroid hormone. Thyroid hormones are
produced and released by the thyroid gland and regulate the body's
metabolism. When the thyroid gland is underactive (hypothyroidism)
it does not produce enough thyroid hormone and metabolism slows.
Do NOT use
Levothyroxine - Generic Synthroid if:
-
you are
allergic to any ingredient in Levothyroxine - Generic Synthroid
-
you have
a history of heart attack, chest pain (angina), adrenal gland
problems, or elevated thyroid hormone levels that have not
been treated
Contact your
doctor or health care provider right away if any of these apply
to you.
Before using
Levothyroxine - Generic Synthroid :
Some medical
conditions may interact with Levothyroxine - Generic Synthroid.
Tell your doctor or pharmacist if you have any medical conditions,
especially if any of the following apply to you:
-
if you
are pregnant, planning to become pregnant, or are breast-feeding
-
if you
are taking any prescription or nonprescription medicine, herbal
preparation, or dietary supplement
-
if you
have allergies to medicines, foods, or other substances
-
if you
have heart problems, high blood pressure, blood clotting problems,
diabetes, bone loss (osteoporosis), digestion or nutrient
absorption problems, infertility problems, pituitary gland
problems, high thyroid levels, or other thyroid problems
-
If you
have just had or are scheduled for surgery
Some MEDICINES
MAY INTERACT with Levothyroxine - Generic Synthroid. Tell your
health care provider if you are taking any other medicines, especially
any of the following:
-
Aluminum
salts (eg, antacids), aminoquinolones (eg, chloroquine), amiodarone,
HMG-CoA reductase inhibitors (eg, simvastatin), iron salts
(eg, ferrous sulfate), raloxifene, rifampin, sertraline, or
sucralfate because they may decrease Levothyroxine - Generic
Synthroid 's effectiveness
-
HMG-CoA
reductase inhibitors (eg, simvastatin) or tricyclic antidepressants
(eg, amitriptyline) because side effects such as nervousness,
fast heart rate, or irregular heartbeat may occur
-
Anticoagulants
(eg, warfarin) or ketamine because their actions and the risk
of their side effects may be increased by Levothyroxine -
Generic Synthroid
-
Beta-blockers
(eg, metoprolol) or digitalis glycosides (eg, digoxin) because
their effectiveness may be decreased by Levothyroxine - Generic
Synthroid
This may not
be a complete list of all interactions that may occur. Ask your
health care provider if Levothyroxine - Generic Synthroid may
interact with other medicines that you take. Check with your health
care provider before you start, stop, or change the dose of any
medicine.
How to use
Levothyroxine - Generic Synthroid :
Use Levothyroxine
- Generic Synthroid as directed by your doctor. Check the label
on the medicine for exact dosing instructions.
-
Take Levothyroxine
- Generic Synthroid on an empty stomach at least 1 hour before
or 2 to 3 hours after eating. It is recommended that you take
your dose 1 hour before breakfast unless otherwise directed
by your doctor.
-
Take Levothyroxine
- Generic Synthroid with a full glass of water (8 oz/240 mL).
-
Notify
your health care provider if you eat foods that contain soybean
flour (infant formula), cottonseed meal, walnuts, or dietary
fiber. These foods decrease the absorption of Levothyroxine
- Generic Synthroid. Your doctor may need to change your dose
of Levothyroxine - Generic Synthroid.
-
Take Levothyroxine
- Generic Synthroid 4 hours apart from calcium supplements,
iron, antacids (those containing aluminum, calcium, or magnesium),
simethicone, cholestyramine, colestipol, sucralfate, or sodium
polystyrene sulfonate. These medicines may decrease the absorption
of Levothyroxine - Generic Synthroid into your bloodstream.
-
Levothyroxine
- Generic Synthroid works best if it is taken at the same
time each day.
-
It may
take several weeks (4 to 6 weeks) before you notice an improvement
in your symptoms.
-
Levothyroxine
- Generic Synthroid will usually have to be taken for life,
except in the cases of temporary low thyroid activity associated
with thyroid inflammation and in patients who are taking Levothyroxine
- Generic Synthroid on a trial basis.
-
For children
or patients who cannot swallow whole tablets: Crush the tablet
and mix in 1 or 2 teaspoons (5 or 10 mL) of water, and give
using a spoon or dropper as soon as possible after preparation.
Do not store the mixture for later use. Do not mix crushed
tablets in soybean infant formula. Consult your pharmacist
for more information.
-
If you
miss a dose of Levothyroxine - Generic Synthroid and you are
taking it regularly, take it as soon as possible. If several
hours have passed or if it is nearing time for the next dose,
do not double the dose to catch up, unless advised by your
health care provider. Do not take 2 doses at once.
Ask your health
care provider any questions you may have about how to use Levothyroxine
- Generic Synthroid.
Important
safety information:
-
Levothyroxine
- Generic Synthroid may rapidly swell and disintegrate resulting
in choking, gagging, the tablet getting stuck in your throat,
or difficulty swallowing. It is very important that you take
the tablet with a full glass of water. Most of these problems
disappeared when Levothyroxine - Generic Synthroid tablets
were taken with water.
-
Tell your
doctor or dentist that you take Levothyroxine - Generic Synthroid
before you receive any medical or dental care, emergency care,
or surgery.
-
If you
are taking blood thinners at the same time as Levothyroxine
- Generic Synthroid , lab tests will be required to adjust
the blood thinners.
-
Diabetes
patients - Levothyroxine - Generic Synthroid may affect your
blood sugar. Check blood sugar levels closely. Ask your doctor
before you change the dose of your diabetes medicine.
-
Lab tests
will be required to monitor therapy. Be sure to keep appointments.
-
Use Levothyroxine
- Generic Synthroid with caution in the ELDERLY; they may
be more sensitive to its effects.
-
Levothyroxine
- Generic Synthroid should be used with caution in CHILDREN;
overuse may reduce the child's final adult height.
-
PREGNANCY
and BREAST-FEEDING: It is not known if Levothyroxine - Generic
Synthroid can cause harm to the fetus. If you become pregnant,
contact your doctor. You will need to discuss the benefits
and risks of using Levothyroxine - Generic Synthroid while
you are pregnant. Levothyroxine - Generic Synthroid is found
in breast milk. If you are or will be breast-feeding while
you use Levothyroxine - Generic Synthroid , check with your
doctor. Discuss any possible risks to your baby.
Possible
side effects of Levothyroxine - Generic Synthroid :
All medicines
may cause side effects, but many people have no, or minor, side
effects. Check with your doctor if any of these most COMMON side
effects persist or become bothersome:
Anxiety; diarrhea;
flushing; mood swings; muscle weakness; partial, temporary hair
loss; sleeplessness; stomach cramps; tiredness; vomiting.
Seek medical
attention right away if any of these SEVERE side effects occur:
Severe allergic
reactions (rash; hives; itching; difficulty breathing; tightness
in the chest; swelling of the mouth, face, lips, or tongue); changes
in appetite; changes in menstrual periods; chest pain; difficulty
breathing; excessive sweating; fast heartbeat; fever; headache;
hives or skin rash; hyperactivity; inability to handle warm or
hot room/weather conditions; irregular heartbeat; irritability;
leg cramps; nervousness; pounding in the chest; seizures; shortness
of breath; tremors; weight gain or weight loss.
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