are there different types of levothyroxine

Precautions

There are experts who believe there isn’t a reason to think the best time to take thyroid medication is at night if you are already taking it in the morning and finding good results. On the other hand, if you are not happy or want to take your medicine at night, you could consider it.

Is night or day the time to take thyroid medication?

What is levothyroxine 50 mg used for? Levothyroxine is used to treat an underactive thyroid (hypothyroidism). It replaces or provides more thyroid hormone, which is normally produced by the thyroid gland. Low thyroid hormone levels can occur naturally or when the thyroid gland is injured by radiation/medications or removed by surgery.

What is levothyroxine 50 mg used for?

You may need to take levothyroxine for two weeks before you notice it starts working. Levothyroxine is meant as a long-term treatment for low thyroid hormone levels. There are different types and different brands of thyroid hormone medication. Some types have worse associated side effects than others.

How long does it take for levothyroxine to take effect?

When you take the proper dose of these medications, they are safe, with few side effects. If you are taking too high a dose, however, you can experience unpleasant symptoms. This is known as overmedication. This article discusses the causes and symptoms of thyroid hormone replacement overmedication.

Are You taking too much thyroid medication?

What is the purpose of levothyroxine?

What is the name of the drug used to treat hypothyroidism?

What to do if you are not feeling good on a blood test?

Why are fillers less consistent in generics than brand names?

Is levothyroxine better than synthroid?

Does levothyroxine have a therapeutic window?

Is levothyroxine safe for hypothyroidism?

See 4 more

About this website

Is there a difference between different brands of levothyroxine?

Because potency of levothyroxine between manufacturers is variable, there is a possibility that changing brands may affect thyroid function tests. However, there is limited data on the impact of changing brands on thyroid function.

What is the best levothyroxine?

The Synthroid brand of levothyroxine improved thyroid-stimulating hormone (TSH) levels by a significantly greater margin compared with generic versions of the synthetic T4 (LT4) hormones for patients with hypothyroidism.

What is the difference between levothyroxine and levothyroxine?

Levothyroxine and Synthroid contain the same active (main) ingredient, levothyroxine, which is human-made T4. Levothyroxine is the generic name for Synthroid. However, there can be small differences in the amount of T4 between Synthroid and some of its generic versions.

Is levothyroxine brand specific?

Levothyroxine is sold under several brand names, including Synthroid, Levoxyl, Unithroid, and Levothroid. A generic version of levothyroxine is also available.

Is there anything better than levothyroxine?

Switching from levothyroxine to Cytomel Cytomel contains a synthetic version of T3 called liothyronine. T3 is three to four times more potent than T4, which is found in levothyroxine.

What is the downside to taking levothyroxine?

shortness of breath, wheezing, hives, itching, rash, flushing, stomach pain, nausea, or swelling of hands, feet, ankles, or lower legs.

Why am I gaining weight while taking levothyroxine?

Does Levothyroxine Cause Weight Gain? Both weight gain and weight loss are possible side effects. Many people do not take the right dosage of levothyroxine, and both undertreatment and overtreatment can have an effect on weight. Levothyroxine weight gain may be tied to undertreatment, according to the ATA.

Do you gain or lose weight on levothyroxine?

In most cases, levothyroxine causes some weight loss. According to the American Thyroid Association, when this medication is started, you may lose up to 10% of your weight. This weight is mainly water weight, since being hypothyroid makes you retain water. Levothyroxine is a medication to treat hypothyroidism.

Is it OK to switch brands of levothyroxine?

Researchers from the Mayo Clinic, FDA, and the Yale School of Medicine found that switching one generic levothyroxine product with another does not have a significant effect on a patient's thyroid-stimulating hormone (TSH) levels.

Is brand name levothyroxine better than generic?

Both brand and generic medication should work equally well to replace the thyroid hormone that your body needs. There are several studies that have shown similar effectiveness (how well the medication works) between brand and generic medications.

Is name brand Synthroid better than generic levothyroxine?

Because the active chemicals in both brand name and generic levothyroxine are the same, they share the same side effect profile. Most of the side effects of both medications come from getting too much of the synthetic hormone, leading to hyperthyroid (too much thyroid hormone) symptoms.

Is it OK to switch from generic levothyroxine to Synthroid?

The FDA maintains that generic levothyroxine is the same as brand name Synthroid. FDA scientists recently collaborated with endocrinologists from Yale and the Mayo Clinic. They concluded that switching from one generic to another is fine (JAMA Internal Medicine, Feb. 28,2022).

What is the most prescribed thyroid medication?

The most common treatment is levothyroxine (Levoxyl, Synthroid, Tirosint, Unithroid, Unithroid Direct), a man-made version of the thyroid hormone thyroxine (T4). It acts just like the hormone your thyroid gland normally makes.

Is Synthroid or Armour thyroid better?

The American Thyroid Association along with other international thyroid organizations agree that Synthroid is the most effective treatment option. There is no strong evidence to suggest Armour Thyroid or a combination therapy of synthetic T4 and T3 produce better results than Synthroid in most people (1).

What is the most commonly prescribed medication for hypothyroidism?

Standard treatment for hypothyroidism involves daily use of the synthetic thyroid hormone levothyroxine (Levo-T, Synthroid, others). This oral medication restores adequate hormone levels, reversing the signs and symptoms of hypothyroidism. You'll likely start to feel better soon after you start treatment.

What is the highest strength of levothyroxine?

Levothyroxine comes in 12.5 microgram, 25 microgram, 50 microgram, 75 microgram and 100 microgram tablets. If you're taking levothyroxine as a liquid, 5ml can have 25 micrograms, 50 micrograms, 100 micrograms or 125micrograms in it.

Does levothyroxine cause weight gain or loss?

In most cases, levothyroxine causes some weight loss. According to the American Thyroid Association, when this medication is started, you may lose...

What can I eat for breakfast after taking levothyroxine?

Most foods are considered fine to eat for breakfast as long as they are eaten 30 to 60 minutes after taking levothyroxine. Levothyroxine should be...

Can I take other medications with levothyroxine?

Levothyroxine is known to interact with many other medications (called a drug-drug interaction), but there are different kinds of drug-drug interac...

Does levothyroxine cause hair loss?

Yes, levothyroxine, the main treatment for a sluggish thyroid gland, may cause hair loss in addition to other side effects. You may experience part...

How To Get The Same Brand Of Levothyroxine Every Time - Walrus

How To Get The Same Brand Of Levothyroxine Every Time. In our latest question and answer, the pharmacist discusses why it is important to stay on the same manufacturer of levothyroxine and what to do if your pharmacy is switching products.

Synthroid - generic vs. name brand | Levothyroxine Sodium - Patient

I was recently switched to the name brand of Synthroid after taking the generic for 20 + years. I really didn't notice any side effects from the generic but since switching to the name brand I have begun having hot flashes and night sweats (I'm WAY past menopause) and I feel anxious, moody, my foot is constantly moving when I'm sitting and recently I noticed I'm clenching my teeth.

Generic vs. Name-Brand Levothyroxine - ClinicalTrials.gov

This study is an unblinded, randomized controlled cross-over study, which involves taking 2 different forms of levothyroxine sequentially over a 16 week period.

Levothyroxine Alternatives Compared - Drugs.com

Drugs.com provides accurate and independent information on more than 24,000 prescription drugs, over-the-counter medicines and natural products. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. Data sources include IBM Watson Micromedex (updated 1 Nov 2022), Cerner Multum™ (updated 25 Oct 2022), ASHP (updated 11 Nov 2022 ...

Product (s) containing levothyroxine

Brand names: Synthroid, Euthyrox, Levoxyl, Tirosint Drug class (es): thyroid drugs Levothyroxine systemic is used in the treatment of:

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

What is levothyroxine?

Levothyroxine is a thyroid medicine that replaces a hormone normally produced by your thyroid gland to regulate the body's energy and metabolism.

What other drugs will affect levothyroxine?

Many other medicines can be affected by your thyroid hormone levels. Certain other medicines may also increase or decrease the effects of levothyroxine.

How is levothyroxine given?

Levothyroxine oral is taken by mouth. The injection is given as an infusion into a vein. Levothyroxine is usually given by injection only if you are unable to take the medicine by mouth.

What are the conditions that can cause a thyroid nodule?

a thyroid nodule; heart disease, a blood clot, or a blood-clotting disorder; diabetes ( insulin or oral diabetes medication doses may need to be changed when you start taking this medicine); kidney disease; anemia (lack of red blood cells); osteoporosis, or low bone mineral density;

How long after taking levothyroxine can you take calcium carbonate?

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, Caltrate, Os-Cal, Oyster Shell Calcium, Rolaids Soft Chew, Tums, and others); cholestyramine, colesevelam, colestipol; ferrous sulfate iron supplement;

How long does it take for levothyroxine to work?

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 this medicine for the rest of your life.

How do you know if you have a heart attack?

symptoms of a heart attack (ch est pain or heavy feeling, pain spreading to the jaw or shoulder, nausea, sweating, general ill feeling).

Usual Adult Dose for Hypothyroidism

Dosing should be individualized with consideration given to age, cardiovascular status, concomitant medical conditions (including pregnancy), and specific nature of condition; follow clinical response and laboratory parameters closely as dose is adjusted: INITIAL DOSES: Primary Hypothyroidism: For otherwise healthy individuals in whom growth and puberty are complete: Initial dose: 1.6 mcg/kg orally once a day -Adjust dose in 12.5 to 25 mcg increments every 4 to 6 weeks until clinically euthyroid and TSH returns to normal Individuals over 50 years and/or Patients with Cardiovascular Disease: Initial dose: 12.5 to 25 mcg orally once a day -Adjust dose at 6 to 8-weeks intervals until clinically euthyroid and TSH returns to normal Severe Longstanding Hypothyroidism: Initial dose: 12.5 to 25 mcg orally once a day -Adjust dose in increments of 12.5 to 25 mcg/day every 2 to 4 weeks until clinically euthyroid and TSH returns to normal MAINTENANCE DOSE: Approximately 1.6 mcg/kg/day is a full replacement dose MAXIMUM dose: 200 to 300 mcg/day (doses greater than 200 mcg/day are seldom needed; doses greater than 300 mcg/day are rarely needed and may indicate poor compliance, malabsorption, drug interactions, or a combination of these factors) Secondary (PITUITARY) OR Tertiary (HYPOTHALAMIC) Hypothyroidism: -Dosing as described above except serum free-T4 level will be used to monitor therapy; serum TSH levels are not a reliable measure and should not be used -Titrate until clinically euthyroid and serum free-T4 levels are restored to the upper half of the normal range Comments: -Dose should be individualized with regular monitoring of clinical status and laboratory parameters. -Peak effect of a given dose may not be attained for 4 to 6 weeks. -Not indicated for the treatment of hypothyroidism during the recovery phase of subacute thyroiditis. -Co-administered food and concomitant medications may significantly affect absorption; take on an empty stomach and at least 4 hours before or after drugs known to interfere with levothyroxine absorption. Use: As replacement therapy in primary (thyroidal), secondary (pituitary), and tertiary (hypothalamic) congenital or acquired hypothyroidism.

Usual Adult Dose for TSH Suppression

TSH levels should generally be suppressed to below 0.1 IU/L -A dose greater than 2 mcg/kg orally once a day is usually required to achieve this degree of suppression Comments: -Patients with high-risk tumors may target a greater level of TSH suppression, however, this is not well defined. -This drug is not indicated for suppression of benign thyroid nodules and nontoxic diffuse goiter in iodine-sufficient patients as there are no clinical benefits and overtreatment may induce hyperthyroidism. Use: As an adjunct to surgery and radioiodine therapy in the management of thyrotropin- dependent well-differentiated thyroid cancer..

Usual Adult Dose for Myxedema Coma

Parenteral Formulation: -Initial loading dose: 300 to 500 mcg IV once -Maintenance dose: 50 to 100 mcg IV once a day until patient can tolerate oral therapy Comment: -Age, general physical condition, cardiac risk factors, severity and duration of myxedema coma should be considered when determining the initial and maintenance dosages. -The relative bioavailability between oral and IV levothyroxine is estimated to be 48% to 74%; due to individual differences, TSH levels should be measured and doses adjusted accordingly. Use: For the treatment of myxedema coma..

Usual Geriatric Dose for Hypothyroidism

Initial dose: 12.5 to 25 mcg orally once a day -Adjust dose at 6 to 8-weeks intervals until clinically euthyroid and TSH returns to normal Maintenance dose: Full replacement doses may be less than 1 mcg/kg/day Maximum dose: 200 to 300 mcg/day (doses greater than 200 mcg/day are seldom needed; doses greater than 300 mcg/day are rarely needed and may indicate poor compliance, malabsorption, drug interactions, or a combination of these factors) Comments: -Dosing should be individualized with consideration given to age, cardiovascular status, concomitant medical conditions, and the specific nature of condition; follow clinical response and laboratory parameters closely as dose is adjusted. -Peak effect of a given dose may not be attained for 4 to 6 week; full recovery dose s. -Not indicated for the treatment of hypothyroidism during the recovery phase of subacute thyroiditis. -Co-administered food and concomitant medications may significantly affect absorption; take on an empty stomach and at least 4 hours before or after drugs known to interfere with levothyroxine absorption. Use: As replacement therapy in primary (thyroidal), secondary (pituitary), and tertiary (hypothalamic) congenital or acquired hypothyroidism.

Usual Pediatric Dose for Hypothyroidism

0 to 3 months: 10 to 15 mcg/kg orally once a day 3 to 6 months: 8 to 10 mcg/kg orally once a day 6 to 12 months: 6 to 8 mcg/kg orally once a day 1 to 5 years: 5 to 6 mcg/kg orally once a day 6 to 12 years: 4 to 5 mcg/kg orally once a day 12 years or older and incomplete growth and puberty: 2 to 3 mcg/kg orally once a day 12 years or older with growth and puberty complete: 1.6 mcg/kg orally once a day Newborns (0 to 3 months) at Risk for Cardiac Failure: Consider a lower initial dose; increase dose every 4 to 6 weeks as needed based on clinical and laboratory response Pediatric Patients at Risk for Hyperactivity: Initial dose should be one-fourth the recommended full replacement dose; increase weekly by one-fourth to the full recommended replacement dose Comments: -Dose should be individualized with regular monitoring of clinical status and laboratory parameters; peak effect may not be attained for 4 to 6 weeks. -Not indicated for the treatment of hypothyroidism during the recovery phase of subacute thyroiditis. -Co-administered food and concomitant medications may significantly affect absorption; take on an empty stomach and at least 4 hours before or after drugs known to interfere with levothyroxine absorption. -The capsule formulation is indicated for patients 6 years or older as the capsule should be swallowed whole; see Other Comment/Administration Advice for specific administration instructions including instructions for those unable to swallow intact tablets. Use: For the treatment of congenital or acquired hypothyroidism..

Dose Adjustments

Myxedema Coma: Elderly and Patients with Cardiovascular Disease: IV use is associated with cardiac toxicity, therefore, doses at the lower end of the dose range should be used in these populations. Pregnancy: New Onset Hypothyroidism: -Patients with moderate to severe signs and symptoms of hypothyroidism: 1.6 mcg/kg orally once a day -Patients with mild hypothyroidism (TSH less than 10 mIU/L): 1 mcg/kg orally once a day -Evaluate TSH every 4 weeks and adjust dose until serum TSH is within trimester-specific range Preexisting Hypothyroidism: -Monitor TSH and free T4 as soon as pregnancy is confirmed and at least each trimester -Maintain TSH in trimester-specific reference range (primary hypothyroidism) -If serum TSH is above the normal trimester-specific range, increase by 12.5 to 25 mcg/day and measure TSH every 4 weeks until serum TSH is within the normal trimester-specific range -Reduce to pre-pregnancy dose immediately after delivery and measure serum TSH level 4 to 8 weeks postpartum to ensure dose is appropriate Therapeutic drug monitoring/range: -Primary Hypothyroidism: Monitor TSH -Secondary and Tertiary Hypothyroidism: Monitor serum free-T4 levels (maintain in the upper half of the normal range).

Precautions

US BOXED WARNING: NOT FOR TREATMENT OF OBESITY OR FOR WEIGHT LOSS -Thyroid hormones, either alone or with other agents, should not be used for the treatment of obesity or for weight loss. In euthyroid patients, doses within the range of daily hormonal requirements are ineffective for weight reduction.

How to give levothyroxine to a baby?

You should not add the crushed tablet to your baby’s feeding bottle as it is important the baby gets the whole dose of levothyroxine and that none is left behind in any unfinished milk. Mix the crushed tablet with the liquid and give it on a spoon or with a medicine dispenser pipette. Do not give your baby a full feed immediately after giving the levothyroxine in case the baby is sick and loses some of the dose. Once your child is old enough to drink from a cup or beaker, you can give the tablets along with a drink of water. Although some pharmacists may offer to make up suspensions of levothyroxine to be helpful, you should never use these as the suspension does not deliver the right dose consistently.

How many strengths of levothyroxine are there?

Levothyroxine reproduces the hormone that your body produces naturally. It currently comes in five different tablet strengths: 12.5mcg, 25mcg, 50mcg, 75mcg and 100mcg. The amount of levothyroxine your child is prescribed will depend on their size and weight and also on the results of their thyroid blood tests.

What is levothyroxine given for?

Levothyroxine (a synthetic form of the hormone thyroxine) is given to people who don’t produce enough thyroid hormone – as is the case in congenital hypothyroidism or Hashimoto’s thyroiditis.

What happens if a child takes too much levothyroxine?

If your child takes too much levothyroxine, they may get some of the symptoms of an overactive thyroid. This is why it is important to have regular blood tests to check the thyroid hormone levels.

How to store levothyroxine?

Store levothyroxine at room temperature away from moisture and heat. Check the expiry dates as out-of-date tablets can lose their strength.

How long after taking levothyroxine can you give your child a pill?

If your child needs to take any of these supplements, make sure it is at least four hours after they have taken their levothyroxine. Check with your chemist before giving your child over-the-counter drugs – even things that you might think are safe such as nose drops. Other drugs can interact with levothyroxine.

Can you put crushed levothyroxine in a bottle?

You should not add the crushed tablet to your baby’s feeding bottle as it is important the baby gets the whole dose of levothyroxine and that none is left behind in any unfinished milk. Mix the crushed tablet with the liquid and give it on a spoon or with a medicine dispenser pipette.

What is levothyroxine?

Levothyroxine is a prescription drug. It comes as a tablet or capsule you take by mouth. It also comes as an injectable solution that’s only given by a healthcare provider.

How does levothyroxine work?

Levothyroxine works by providing the thyroid hormone that your thyroid gland would produce if it were working normally.

What is the name of the drug that is used to treat thyroid cancer?

Brand names: Levoxyl, Synthroid, and Unithroid. Levothyroxine comes in three forms: an oral tablet, an oral capsule, and an injectable solution. Levothyroxine oral tablet is used to treat hypothyroidism. It’s also used to treat goiter and certain types of thyroid cancer.

Why is levothyroxine less effective?

When levothyroxine is less effective: When you take levothyroxine with certain drugs, it may not work as well to treat your condition. This is because the amount of levothyroxine in your body may be decreased. Examples of these drugs include:

What are some examples of drugs that can be taken with levothyroxine?

Examples of these drugs include: The antidepressant sertraline. If you take sertraline with levothyroxine, your doctor might need to increase your levothyroxine dosage to keep it working well for you. Rifampin and anti-seizure drugs such as carbamazepine and phenobarbital. Calcium carbonate or ferrous sulfate.

How long before taking levothyroxine?

Take levothyroxine at least 4 hours before or after taking these medications to help make sure that levothyroxine works properly. Colesevelam, cholestyramine, colestipol, kayexalate, or sevelamer. Take levothyroxine at least 4 hours before taking these medications to help make sure that levothyroxine works properly.

Does levothyroxine cause bleeding?

Taking these drugs with levothyroxine may increase your risk of bleeding. Your doctor may need to decrease the dosage of your blood thinner if you’re also taking levothyroxine. Ketamine. Taking this drug with levothyroxine may increase your risk of high blood pressure and fast heart rate.

Do you need T3 medication?

By now you might be asking, do I need to be on medication containing T3?

What is LT4 thyroid?

This thyroid medication contains the inactive thyroid hormone T4 ( also known as LT4 and Thyroxine ). If you are taking this medication to treat your sluggish thyroid, ...

What happens if you take levothyroxine and you don't feel better?

If you are on Levothyroxine and NOT feeling better, then one or more of these things might be happening to you: You are not on a high enough dose. You are on the WRONG type of T4 thyroid medication. You are not absorbing thyroid hormone correctly. You are not getting enough T3 thyroid hormone. But the main question is:

What happens if you take levothyroxine?

If you are on Levothyroxine and NOT feeling better, then one or more of these things might be happening to you: 1 You are not on a high enough dose 2 You are on the WRONG type of T4 thyroid medication 3 You are not absorbing thyroid hormone correctly 4 You are not getting enough T3 thyroid hormone

What is the demand for thyroid hormone?

And the demand for thyroid hormone depends on multiple factors including how much stress we are under, how much inflammation we are suffering from, the type of medications we are using and so on.

What is the same medication that doctors give out?

Unfortunately, most Doctors give out the same medication: Levothyroxine or Synthroid.

What are the symptoms of hypothyroidism?

Chronic pain in the muscles and joints. Cold extremities (hands and feet) Chronic constipation. These are the symptoms I am referring to whenever I mention the 'symptoms of hypothyroidism' and these symptoms should be going away or reducing if you are taking thyroid medication such as Levothyroxine or Synthroid.

Brands of Levothyroxine

attached pharmacy which make up the prescription for you, I think maybe Wockhardt might be a cheap...

Levothyroxine brands?

about branding first because I presume I’ll now have to take two different brands?! Thank you 🌟

Levothyroxine

I seem to have an intolerance to Levothyroxine, I have no known symptoms of hypothyroidism BMI 25,...

Levothyroxine

days to get teva 50mcg. (due to fillers being different I take 2x25 as I didn't what to make any...

Activis Levothyroxin

and he thinks there may be problems getting Activis Levothyroxin brand as the drugs merge. They’ll...

How are Thyroid Hormone Medications Produced?

There are two ways in which thyroid hormone medications is produced. The first is done using synthetic components where the thyroid hormone medication is not natural, but a hormone replacement drug is produced in a lab. Leoxyl, Synthroid, Levothroid, Thyrolar and Cytomel are all synthetically produced thyroid hormone.

What is the only natural thyroid hormone derived from domesticated animals?

The only natural thyroid hormone derived from domesticated animals (i.e. bovine or porcine) is the desiccated thyroid.

Why is desiccated thyroid not purified?

Because drugs produced from animal thyroid are not purified, they may contain protein and hormones that are not ‘natural’ for the human body. Though desiccated thyroid contains both T3 and T4, the amount of T3 and T4 in animals isn’t the same as in humans.

What are the two types of thyroid hormones?

Our body requires two types of thyroid hormones in order to function normally – the triiodothyronine(T3) and thyroxine(T4) . Some medications contains only T3 or T4, while other have both. Synthetic T4 Only. Synthetic T4 supplements are available in different brands: Synthroid (Levothyroxine)

What is T4 used for?

In general, synthetic forms of T4 are called levothyroxine and are considered the standard treatment for hypothyroidism. Though synthetically made, they are exactly the same as the thyroxine released by the thyroid gland.

What is the name of the pill that is used for sexual desire?

The pill, nicknamed the Female Viagra, will only be ] The 4 Types of Thyroid Hormone Medications ...

How often can you take thyrolar?

Thyrolar is also given once a day, which ignores the short life span of T3. Compounded synthetic liothyronine/levothyroxine can be customized, allowing doctors to change the dosage to even the smallest ration based upon the patient’s response.

What is the purpose of levothyroxine?

1  Levothyroxine is prescribed for people with an underactive thyroid , a condition known as hypothyroidism.

What is the name of the drug used to treat hypothyroidism?

Additional Monotherapy. Brand names for levothyroxine, the main drug used to treat hypothyroidism, include Synthroid, Levoxyl, Unithroid, and Levothroid. The generic version of levothyroxine is also prescribed, but there is some controversy about whether it is as effective and reliable as the brand names.

What to do if you are not feeling good on a blood test?

Only you know your body. If you are not feeling good on a one preparation even though your blood tests show that you should be, it may be worth switching to a different one. The important point is to be your own advocate. Only you know how you feel. Find a healthcare provider who will work with you and listen to you, recognizing that how you are feeling, rather than test results or study findings, is what matters most.

Why are fillers less consistent in generics than brand names?

Fillers and additives such as dyes, gluten, and lactose are also less consistent in generics than brand-name options because they originate from different manufacturers. If this is a concern for you, ask your pharmacist for a list of your prescribed drug's ingredients.

Is levothyroxine better than synthroid?

According to a presentation at the annual meeting of the American Association of Clinical Endocrinologists in 2017, Synthroid was associated with significantly better thyroid-stimulating hormone (TSH) lab results than generic levothyroxine.

Does levothyroxine have a therapeutic window?

But levothyroxine has what's called a "narrow therapeutic window," meaning that treatment must be fine-tuned in order to achieve the desired effects. 3 .

Is levothyroxine safe for hypothyroidism?

The four brand name preparations of levothyroxine available in the United States for the treatment of hypothyroidism have been thoroughly tested and known to be reliable and effective, though there are some differences in how these products are manufactured.