What are the side effects of too much levothyroxine?

What happens if too much levothyroxine is taken?

What happens if I overdose on Levothyroxine (Synthroid)? Overdose symptoms may include headache, leg cramps, tremors, feeling nervous or irritable, chest pain, shortness of breath, and fast or pounding heartbeats.

What are the side effects if your thyroid medication is too strong?

How do you know if your thyroid medication needs adjusting?

General joint and muscle pains are common when hypothyroidism is not sufficiently treated, and your dosage of thyroid hormone needs to be increased. Joint and muscle weakness and pain, especially in the arms and legs, can be evidence that you need an increased dose of antithyroid drugs for your hyperthyroidism.

How do I know if my thyroid medication is too high?

Levothyroxine Side Effects, Indication, and Pregnancy

What are symptoms of too little thyroid medication?

Is 100mg of levothyroxine too much?

Although starting doses are usually the same, the dose of levothyroxine you end up taking, or how quickly the dose is increased, depends on your symptoms, hormone levels, age and whether you have any other health problems. Adults usually start with a dose between 50 micrograms and 100 micrograms taken once a day.

What is the highest level of levothyroxine?

Maximum Dosage

Inadequate response to 300 mcg/day or more may indicate poor compliance, malabsorption, drug interactions, or a combination of these factors. Doses more than 200 mcg/day PO are rarely needed. However, rare patients may require up to 300 mcg/day PO for treating hypothyroidism or thyroid cancer.

What does a thyroid storm feel like?

Symptoms of thyroid storm include: Feeling extremely irritable or grumpy. High systolic blood pressure, low diastolic blood pressure, and fast heartbeat. Nausea, vomiting, or diarrhea.

Is 25 mcg levothyroxine a lot?

There are two strategies for initiating levothyroxine in healthy adults younger than 65 years: low-dose (50 mcg) and full-dose (1.6 to 1.7 mcg per kg). Traditionally, lower starting doses of 25 to 50 mcg per day are recommended for patients 65 years and older or who have ischemic heart disease.

Can thyroid cause dizziness balance problems?

Is dizziness a symptom of a thyroid problem? Yes, dizziness is a symptom of a thyroid problem. Thyroid diseases³ or thyroid abnormalities sometimes manifest as dizziness. A high heart rate, shortness of breath, and lightheadedness are all possible symptoms of hyperthyroidism.

Can thyroid problems cause leg pain?

Muscle weakness, aches, and cramping are common in people with hypothyroidism. While the weakness can be generalized, people typically experience it in the muscles that are closest to the center of their bodies, such as the thigh or shoulder.

Does thyroid cause cough?

Another symptom of thyroid nodules is a chronic cough, a cough that just won't seem to go away. Like the nodules that cause swallowing symptoms, thyroid nodules that cause the patient to cough are almost always on the back side of the thyroid.

Can too much thyroid medication cause fatigue?

Signs that you may be overmedicated include feeling more fatigued than your baseline, as well as feeling low-energy or restless despite adequate sleep. Heart palpitation is another common symptom.

What should your TSH level be while on levothyroxine?

It is generally recommended to aim for a TSH in the lower half of the normal range, ie, typically <2.5 mIU/L in patients with primary hypothyroidism on levothyroxine replacement.

Is it better to take thyroxine at night or in the morning?

There is consensus that levothyroxine should be taken in the morning on an empty stomach. A pilot study showed that levothyroxine intake at bedtime significantly decreased thyrotropin levels and increased free thyroxine and total triiodothyronine levels.

Why do you have to drink a full glass of water with levothyroxine?

The Levoxyl-branded tablet may rapidly swell and disintegrate, and cause choking or gagging if it becomes stuck in your throat. Take with a full glass of water, but talk with your doctor should you have difficulty swallowing it.

How much levothyroxine is fatal?

Toxic dose

An acute ingestion of more than 5 mg of levothyroxine (T4) or 0.75 mg of triiodothyronine (T3) is considered potentially toxic.

What is considered a dangerously high TSH level?

A TSH over 10 mIU/L has been linked to an increased risk of coronary heart disease and heart failure, which is why you'll probably want to seek treatment if your TSH is close to (but still under) that upper limit.

What should I avoid while taking levothyroxine?

levothyroxine food

In addition, absorption of levothyroxine may be decreased by foods such as soybean flour, cotton seed meal, walnuts, dietary fiber, calcium, and calcium fortified juices. These foods should be avoided within several hours of dosing if possible.

Can thyroid cause neck and shoulder pain?

Specifically, hypothyroidism may lead to: Muscle aches, tenderness and stiffness, especially in the shoulders and hips. Joint pain and stiffness.

Can levothyroxine cause breathing problems?

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.

Can thyroid cause respiratory problems?

Both hypothyroidism and hyperthyroidism cause respiratory muscle weakness and decrease pulmonary function. Hypothyroidism reduces respiratory drive and can cause obstructive sleep apnea or pleural effusion, while hyperthyroidism increases respiratory drive and can cause dyspnea on exertion.

Can too much levothyroxine cause muscle pain?

headache, leg cramps, muscle aches; feeling nervous or irritable; dryness of your skin or hair, hair loss; irregular menstrual periods; or.