What are the long term effects of levothyroxine?

The greatest risks of long-term treatment with levothyroxine are: An increased risk of heart disease, especially in older adults and people with pre-existing heart conditions. An increased risk of osteoporosis and bone fractures, especially in post-menopausal women and elderly patients above 70 years of age.

Can levothyroxine cause long term damage?

Yes, it's safe to take levothyroxine for a long time, even many years. However, high doses of levothyroxine over a long time can sometimes cause weakening of the bones (osteoporosis). This should not happen if you are on the right dose. It's important to have regular blood tests to make sure your dose is not too high.

Does levothyroxine cause dizziness?

Heart rhythm changes—fast or irregular heartbeat, dizziness, feeling faint or lightheaded, chest pain, trouble breathing. Irregular menstrual cycles or spotting. Severe diarrhea. Tremors or shaking.

Can levothyroxine cause itching?

If you experience either of the following symptoms or those listed in the IMPORTANT WARNING section, call your doctor immediately or get emergency medical treatment: shortness of breath, wheezing, hives, itching, rash, flushing, stomach pain, nausea, or swelling of hands, feet, ankles, or lower legs.

Is diarrhea a side effect of levothyroxine?

Diarrhea is another side effect of levothyroxine that you may experience. Elevated thyroid hormone levels can cause your gut to make more digestive juices and speed up how fast things move through your small intestine, causing diarrhea.

SURPRISING Side Effects of Levothyroxine (No one talks about these)

What are the mental side effects of levothyroxine?

Levothyroxine-treated hypothyroid women were more likely to have anxiety (OR = 2.08, CI: 1.28–3.38) and depression (OR = 3.13, IC = 1.45–6.45). Conclusion: In spite of receiving treatment with levothyroxine, women with hypothyroidism are more likely to have depression and anxiety.

Is there a natural alternative to levothyroxine?

Also known as natural desiccated thyroid (NDT), DTE is available in tablet form and is often considered a safer and more tolerable alternative for people who don't respond well to levothyroxine. “DTE is natural versus synthetic, and it's the closest thing to the thyroid hormone that we make ourselves,” explains Dr.

What are signs that levothyroxine is too high?

Symptoms of taking too much levothyroxine include a fast heart rate, anxiety, and trouble sleeping. If you're prescribed levothyroxine, it's possible to take too much by accident, so follow your healthcare provider's directions.

What part of the body itches with thyroid problems?

Where do you itch with thyroid problems? Dry, itchy skin often affects the lower legs, elbows, and back. Thyroid hormones directly impact skin moisture and oil production, creating dry skin in some cases. Hypothyroidism may slow your heart rate, but hyperthyroidism can cause a rapid or irregular heartbeat.

What is thyroid vertigo?

Researchers believe that hypothyroidism causes inflammatory or metabolic changes. Because of this, your inner ear can become inflamed, or the flow of endolymph fluid changes, causing balance disturbances and/or hearing changes. These changes can lead to vertigo.

What are the worst symptoms of thyroid?

Common symptoms

• nervousness, anxiety and irritability.
• hyperactivity – you may find it hard to stay still and have a lot of nervous energy.
• mood swings.
• difficulty sleeping.
• feeling tired all the time.
• sensitivity to heat.
• muscle weakness.
• diarrhoea.

Can thyroid problems affect inner ear?

For example, hypothyroidism and thyroid autoimmunity can damage the inner ear through hormonal, immune, and vascular mechanisms. Vestibular disorders like Ménière's disease (MD) and benign paroxysmal positional vertigo (BPPV) also show possible associations with thyroid dysfunction.

What is the toxic effect of levothyroxine?

The common clinical signs following thyroxine overdose can either be limited to tachycardia, agitation, nervousness, insomnia, anxiety, tremor [2], or severe features, though less likely, like thyroid storm involving cardiac, neurological, respiratory and thermoregulatory center [3].

What is the life expectancy of someone with an underactive thyroid?

Does Hypothyroidism Affect Life Expectancy? With proper treatment, a person with hypothyroidism usually has a normal life expectancy, with little or no decrease in quality of life. 1 Hypothyroidism generally carries a greater life expectancy than hyperthyroidism (overactive thyroid).

Why was levothyroxine recalled in 2025?

On 10/15/2025, ACCORD HEALTHCARE recalled LEVOTHYROXINE SODIUM 88 MCG due to Subpotent: During long term stability testing of Levothyroxine Sodium Tablets USP for 88 mcg, the assay content was observed below the approved specification range.

What is the one thing you should be eating for your thyroid every morning?

1. Traditional Eggs or Egg Muffin Cups. Eggs are a great source of not only iodine but also selenium, another crucial nutrient for thyroid health.

What are 5 signs of thyroid storm?

Symptoms of a thyroid storm include:

• a rapid heartbeat.
• a high temperature.
• high blood pressure (hypertension)
• yellowing of the skin and eyes (jaundice)
• severe agitation and confusion.
• loss of consciousness.

How long does it take for too much levothyroxine to get out of your system?

It takes levothyroxine approximately 4-6 weeks to leave the body completely after the last dose. Levothyroxine stays in the body longer (closer to 6 weeks) in people who have hypothyroidism (underactive thyroid) compared to those with normal thyroid function.

What to avoid while taking levothyroxine?

The bottom line

Orlistat (Xenical, Alli), iron, and supplements containing calcium, magnesium, or aluminum can also lower levothyroxine levels. In most cases, it's best to avoid taking levothyroxine within 4 hours of these medications or supplements. Coffee, milk, and soy products can also reduce levothyroxine levels.

What foods are bad for thyroid health?

Cruciferous vegetables – Vegetables such as broccoli, cabbage, kale and Brussels sprouts can inhibit the production of thyroid hormone. This is especially common in those who have an iodine deficiency. Digesting these vegetables can block the ability to absorb iodine, which is needed for normal thyroid function.

What is the root cause of thyroid issues?

This is because most cases of thyroid disease are linked to genetics and/or caused by autoimmune conditions, which you can't prevent. The two conditions you may be able to prevent are thyroid problems related to iodine excess or deficiency.

What is a natural thyroid pill?

Today, thyroid extracts are made from the dried and ground thyroid glands of pigs. So they're often considered a more “natural” form of thyroid replacement. Along with Armour Thyroid, NP Thyroid is another natural thyroid option available on the market.

How important is sleep for thyroid health?

Sleep has a bidirectional relationship with the hypothalamic–pituitary–thyroid axis, and both these homeostatic processes are interdependent for robust physiological functioning. The quality and quantity of sleep influence the circadian pattern of thyroid-stimulating hormone (TSH) and thyroid hormone secretion.