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What Are The Side Effects Of A Low Thyroid

Monitor Your Soy Intake

Levothyroxine Overview – Low Thyroid Symptoms, Levothyroxine Side Effects, How to take

Soy may hinder the absorption of thyroid hormones. If you drink or eat too many soy products, you may not be able to properly absorb your medication.

Its especially important that caregivers monitor the soy intake of infants who need hypothyroidism treatment and also drink soy formula.

Soy is found in:

  • soybeans
  • soy sauce

You need steady doses of the medication to achieve even levels of thyroid hormone in your blood. Avoid eating or drinking soy-based foods for at least 4 hours before and after you take your medication.

How Does My Thyroid Work

The thyroid gland is a small, butterfly-shaped organ located in the front of your neck just under the voice box . Picture the middle of the butterflys body centered on your neck, with the wings hugging around your windpipe . The main job of the thyroid is to control your metabolism. Metabolism is the process that your body uses to transform food to energy your body uses to function. The thyroid creates the hormones T4 and T3 to control your metabolism. These hormones work throughout the body to tell the bodys cells how much energy to use. They control your body temperature and heart rate.

When your thyroid works correctly, its constantly making hormones, releasing them and then making new hormones to replace whats been used. This keeps your metabolism functioning and all of your bodys systems in check. The amount of thyroid hormones in the bloodstream is controlled by the pituitary gland, which is located in the center of the skull below the brain. When the pituitary gland senses either a lack of thyroid hormone or too much, it adjusts its own hormone and sends it to the thyroid to balance out the amounts.

If the amount of thyroid hormones is too high or too low , the entire body is impacted.

Reproductive Changes In Women Could Mean You Have Low Thyroid

Women are at an increased risk for developing thyroid disease. Women are also more likely to develop thyroid conditions after pregnancy and following menopause.

Women may experience a change in their menstrual cycle if their thyroid function is off, says Dodell. Not only might you experience irregularities in your cycle, but hypothyroidism may also cause periods that are much heavier than normal.

Women who are trying to conceive may have difficulties getting pregnant. Therefore, women who are trying to get pregnant or are planning to try and get pregnant in the near future should have their thyroid levels checked, Dodell explains. We also monitor women who are being treated for hypothyroidism closely during pregnancy, since the dose of medication may need to be adjusted.

Menopausal women may experience worsening symptoms. Early menopause is a side effect of hypothyroidism this occurs when the onset of menopause is before age 40.

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Whats The Connection Between Hypothyroidism And Weight Gain

Your thyroid is responsible for many of your bodys daily functions, including metabolism, organ function, and temperature control. When your body doesnt produce enough thyroid hormone, all of these functions can slow down.

If your thyroid gland doesnt function properly, your basal metabolic rate may be low. For that reason, an underactive thyroid is commonly associated with weight gain. The more severe the condition is, the greater your weight gain is likely to be.

The typical amount of weight gain isnt very high, though. Most people will gain somewhere between 5 and 10 pounds.

Properly treating the condition can help you lose any weight you gained while your thyroid levels were uncontrolled. However, keep in mind that thats not always the case. Symptoms of underactive thyroid, including weight gain, develop over a long period of time.

Its not uncommon for people with low thyroid hormone levels to lose no weight after theyre treated for the condition. That doesnt mean the condition isnt being properly treated. Instead, it may indicate that your weight gain was the result of lifestyle choices rather than low hormone levels.

Side Effects Requiring Immediate Medical Attention

diet for thyroid issues in pregnancy Archives

Along with its needed effects, thyroid desiccated may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Get emergency help immediately if any of the following symptoms of overdose occur while taking thyroid desiccated:

  • Changes in appetite

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What Is Levothyroxine And How Does It Work

Levothyroxine sodium is a drug approved by the FDA as an oral and injectable prescriptionthyroid hormonemedication that is used to treat underactive thyroid and other conditions. Hypothyroidism is a medical term that refers to any state in which a person’s thyroid hormone production is below normal. This medication replaces or provides thyroid hormone support, 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. Having enough thyroid hormone is important for maintaining normal mental health and physical activity. In children, having enough thyroid hormone is important for normal mental and physical development. Levothyroxine is also know as Lthyroxine.

Symptoms of Hypothyroidism

The symptoms of hypothyroidism are depend on the health of the thyroid and the efficient production of the thyroid hormone, but can include:

  • 1.7 mcg/kg or 100-125 mcg PO qDay not to exceed 300 mcg/day
  • > 50 years
  • Usual initial drug dose: 25-50 mcg/day
  • May adjust drug dose by 12.5-25 mcg q6-8Week
  • > 50 yr with CV disease
  • Usual initial drug dose: 12.5-25 mcg PO qDay
  • May adjust drug dose by 12.5-25 mcg q4-6weeks until patient becomes euthyroid and serumTSH concentration normalized adjustments q6-8weeks also used
  • Dose range: 100-125 mcg PO qDay
  • Severe Hypothyroidism

    Initial drug dose: 12.5-25 mcg PO qDay

    Adjust drug dose by 25 mcg/day q2-4Week PRN

    Subclinical Hypothyroidism

    Tips To Keep In Mind When Taking Medication

    To prevent the occurrence of side effects, you should always follow and stick to your prescribed dosage.

    Next, you should take some precautionary measures like telling your doctor your complete medical history especially if you have or have had diseases such as cardiac problems, diabetes, allergies, and problems relating to the adrenal glands.

    Also, it is important to avoid using the prescribed thyroid drugs for weight loss. Hypothyroidism drugs may cause weight loss for patients, but if you are not suffering from any thyroid disorder, you should prevent using them.

    Precautionary measures must also be taken especially when the ones taking the thyroid drugs are in their elderly stage. Most older individuals are prescribed lower doses.

    On the other hand, pregnant women can use or take such prescribed thyroid medication. Lactating women can also take thyroid medications. While these medications pass through the breast milk they are not dangerous and do not cause ill effects on the child. Still, any woman who becomes pregnant or plans to lactate during the treatment must inform his or her doctor right away for the dosages to be adjusted.

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    Thyroid Medication Side Effects

    Anytime you use any sort of thyroid medication, its important to understand the possible side effects that they might cause. Oftentimes people are given the wrong kind of medication or prescribed the wrong dosage which can cause some pretty nerve wrecking thyroid medication side effects.

    So be sure to note any adverse reactions you might have and below Ill discuss a few of the common types of thyroid medications and what kind of side effects you might experience and what they mean.

    And also keep mind that medication or supplements should only be used together with the right hypothyroidism diet or else your hypothyroidism treatment will not be effective in the long run.

    Trouble Concentrating Or Remembering

    Thyroid Medication Side Effects Fatigue & Weight Gain

    Many patients with hypothyroidism complain of mental fogginess and trouble concentrating. The way this mental fogginess presents itself varies by person.

    In one study, 22% of low-thyroid individuals described increased difficulty doing everyday math, 36% described thinking more slowly than usual and 39% reported having a poorer memory .

    In another study of 14 men and women with untreated hypothyroidism, the participants showed difficulty remembering verbal cues .

    The causes for this are not yet fully understood, but difficulties in memory improve with treatment of low thyroid hormone .

    Difficulties in memory or concentration can happen to everyone, but if they are sudden or severe, they could be a signal of hypothyroidism.

    Summary: Hypothyroidism can cause mental fogginess and difficulty concentrating. It may also impair certain kinds of memory.

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    What Is Synthroid Used For

    Synthroid is used for thyroid-hormone replacement therapy in people with low thyroid hormone levels . It can also be used to treat some forms of thyroid cancer when combined with other therapies .

    Theres no cure for hypothyroidism, a condition that affects approximately 5% of the population and impacts your entire body . That said, thyroid replacement medicines like levothyroxine can help you manage the condition and lessen signs and symptoms of hypothyroidism, such as tiredness and fatigue, sensitivity to cold, hair loss, and weight gain.

    The goal of levothyroxine, and its brand name counterpart Synthroid, is to restore your T4 and TSH to normal levels by supplying your body with a synthetic version of the same hormone. Essentially, the right dose of Synthroid mimics normal thyroid function.

    Over 500 generic drugs, each $5 per month

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    Most sources indicate it takes four to eight weeks to start feeling better on Synthroid . Your healthcare provider will check your TSH blood test approximately six weeks after starting the medicine to make sure your thyroid hormone levels have returned to normalthis means that youre taking the right amount of thyroid hormone.

    Synthroid is usually taken once a day, ideally on an empty stomach. To maximize effectiveness, avoid taking it with prescription or over-the-counter antacids.

    Radiation Treatment Of The Thyroid

    Radioactive iodine, a common treatment for hyperthyroidism, gradually destroys thyroid cells. If you receive radioactive iodine treatment, you probably will eventually develop hypothyroidism. Doctors also treat people who have head or neck cancers with external radiation therapy, which can also damage the thyroid if it is included in the treatment.

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    Signs And Symptoms Of Hypothyroidism

    Thyroid disorders are common. In fact, about 12% of people will experience abnormal thyroid function at some point during their lives.

    Women are eight times more likely to develop a thyroid disorder than men. Also, thyroid problems increase with age and may affect adults differently than children.

    At the most basic level, thyroid hormone is responsible for coordinating energy, growth and metabolism in your body.

    Problems can occur when this hormones levels are too high or low.

    Hypothyroidism, or low levels of thyroid hormone, slows your metabolism and decreases growth or repair of many parts of the body.

    Signs Your Thyroid Isnt Working Right

    Side effects of hypothyroidism

    by The Surgical Clinic |

    The thyroid gland is an important part of the endocrine system. This butterfly-shaped organ regulates important hormones that influence many functions in your body. These hormones also influence how well your body performs physically and mentally.

    Keep in mind, your body is a complicated and intricate system that operates on many levels of performance. However, over time many factors can build up and disrupt the balance of your body. Specifically, your systems can become overactive or underactive in order to compensate or respond to these factors.

    Thyroid function problems, in particular, occur when the thyroid either becomes under or overused. These conditions are called hypothyroidism and hyperthyroidism, respectively. Both of these conditions can cause several problems. In order to explore twenty signs of thyroid problems, our Nashville, TN surgeons have divided them into ten signs for each of these separate conditions.

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    How Is Hypothyroidism Treated During Pregnancy

    Thyroid hormone replacement is used to treat the mother. Dosage of thyroid hormone replacement therapy is based on the individual’s levels of thyroid hormones. Thyroid hormone levels may change during pregnancy. And, the thyroid replacement dosing may also change. Thyroid hormone levels need to be checked every 4 weeks during the first half of pregnancy. The treatment is safe and essential to both mother and fetus. Routine screening for all newborns includes a test of thyroid hormone levels.

    Circulatory And Cardiovascular Systems

    Hypothyroidism slows your heart rate and weakens your heartbeat, making your heart less efficient at pumping blood out to your body. This can make you short of breath when you exercise. By narrowing your arteries, this condition can also raise blood pressure.

    Hypothyroidism can lead to high cholesterol. Together, high blood pressure and high cholesterol can increase your risk for heart disease.

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    Heavy Or Irregular Periods

    Both irregular and heavy menstrual bleeding are linked to hypothyroidism.

    One study showed that about 40% of women with low thyroid hormone experienced increasing menstrual irregularity or heavy bleeding in the last year, compared to 26% of women with normal thyroid levels .

    In another study, 30% of women with hypothyroidism had irregular and heavy periods. These women had been diagnosed with hypothyroidism after other symptoms had caused them to get tested .

    Thyroid hormone interacts with other hormones that control the menstrual cycle, and abnormal levels of it can disrupt their signals. Also, thyroid hormone directly affects the ovaries and uterus.

    There are several problems besides hypothyroidism that can cause heavy or irregular periods. If you have irregular or heavy periods that disrupt your lifestyle, consider talking with a gynecologist before worrying about your thyroid.

    Summary: Heavy periods or irregular cycles that are worse than usual could be caused by a medical condition, including hypothyroidism. Its best to talk to a gynecologist about them.

    Whats The Difference Between Hypothyroidism And Hyperthyroidism

    Side effects of not taking thyroid medication for Hypothyroidism!

    In hypothyroidism, the thyroid doesnt make enough thyroid hormone.

    The difference between hypothyroidism and hyperthyroidism is quantity. In hypothyroidism, the thyroid makes very little thyroid hormone. On the flip side, someone with hyperthyroidism has a thyroid that makes too much thyroid hormone. Hyperthyroidism involves higher levels of thyroid hormones, which makes your metabolism speed up. If you have hypothyroidism, your metabolism slows down.

    Many things are the opposite between these two conditions. If you have hypothyroidism, you may have a difficult time dealing with the cold. If you have hyperthyroidism, you may not handle the heat. They are opposite extremes of thyroid function. Ideally, you should be in the middle. Treatments for both of these conditions work to get your thyroid function as close to that middle ground as possible.

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    Low Thyroid T3 Dangers Conclusion

    It is clear now that the thyroid hormone T3 has many functions apart from the most known ones of regulating body metabolism and protein synthesis. The list above describes a number of the risks or dangers associated with low T3 levels, though not exhaustively.

    It is therefore very important to practice healthy living that keeps at bay such conditions for our own sake and for the sake of our loved ones. If you suspect that you may have such a condition, it is vital to see a doctor as soon as possible so that you can get the medical help available. There are diagnostic tests available to conclusively determine this.

    Other Causes Of Hyperthyroidism

    Hyperthyroidism can also result from thyroid nodules. These are lumps that develop inside the thyroid and sometimes begin producing thyroid hormones. Large lumps may create a noticeable goiter. Smaller lumps can be detected with ultrasound. A thyroid uptake and scan can tell if the lump is producing too much thyroid hormone.

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    Can Levothyroxine Hurt Your Kidneys

    A study by Shin et al. in 2012 reported a significantly higher incidence rate of end-stage renal disease among SCH patients not treated with levothyroxine . Treatment with levothyroxine was associated with a delay in progression to CKD stage 5 or ESRD, as well as overall renal function preservation .

    How Is Postpartum Thyroiditis Treated

    Effects of Hypothyroidism: Thinning Hair, Heart Attack and ...

    Treatment for postpartum thyroiditis depends on the phase of the disease and what symptoms you have. For example, if you get symptoms of hyperthyroidism in the first phase, your treatment may include medicines to slow down the heart rate.

    In most women who have postpartum thyroiditis, the thyroid returns to normal within 12 to 18 months after symptoms start. But if you have a history of postpartum thyroiditis, your risk is higher for developing permanent hypothyroidism within 5 to 10 years.

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    How Should I Take Desiccated Thyroid

    Take desiccated thyroid exactly as prescribed by your doctor. Follow all directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended.

    While using desiccated thyroid, you may need frequent blood tests.

    To be sure this medication is helping your condition, your blood may need to be tested often. Visit your doctor regularly.

    Keep using this medicine as directed, even if you feel well. You may need to take thyroid medication for the rest of your life.

    If you need surgery, tell the surgeon ahead of time that you are using this medicine. You may need to stop using the medicine for a short time.

    Store at room temperature away from moisture and heat.

    This information is intended for use by health professionals

    Levothyroxine 25 micrograms Tablets

    Each tablet contains 27.8 micrograms of levothyroxine sodium equivalent to 25 micrograms of levothyroxine sodium anhydrous.

    For the full list of excipients, see section 6.1

    White, circular, convex tablets marked TX25 on one face and CP on the reverse.

    Levothyroxine sodium is used in adults and children for the treatment of thyroid deficiency states.


    Adults: Initially, 50 to 100 micrograms daily , preferably taken before breakfast or your first meal of the day. Adjust at three to four week intervals by 50 micrograms until normal metabolism is steadily maintained. The final dose may be up to 100 to 200 micrograms.

    Elderly: as for patients aged over 50 years


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