Does metformin affect the thyroid gland?

A common medication used for the treatment of diabetes called metformin may have effects on the thyroid. Some studies suggest that the TSH level is lower in patients with diabetes on metformin. This may be important in patients with previously diagnosed hypothyroidism on thyroid hormone.

Does metformin cause thyroid problems?

Diabetes Drug May Affect Thyroid in Some Patients. MONDAY, Sept. 22, 2014 (HealthDay News) — Metformin, a drug commonly used to treat diabetes, may raise the risk of low levels of thyroid-stimulating hormone (TSH) among patients with an underactive thyroid, a new study suggests.

What medications Mess Up Your thyroid?

8 drugs that cause hypothyroidism

  • Hyperthyroidism medications like propylthiouracil (PTU), methimazole, radioactive iodine (or radioiodine), and potassium iodine. …
  • Amiodarone. …
  • Lithium. …
  • Interleukin-2. …
  • Interferon alfa. …
  • Tyrosine kinase inhibitors like sunitinib (Sutent) and sorafenib (Nexavar)

Is metformin used for underactive thyroid?

Results. The majority of available evidence suggests that metformin therapy results in a modest reduction of TSH levels in diabetic and/or PCOS patients with thyroid disorder, while thyroid hormone levels remain unaltered. It appears that this effect is independent of thyroid autoimmunity and thyroxine treatment.

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What are the side effects of metformin?

Nausea, vomiting, stomach upset, diarrhea, weakness, or a metallic taste in the mouth may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly. If stomach symptoms return later (after taking the same dose for several days or weeks), tell your doctor right away.

What medications should be avoided with hypothyroidism?

Just as there shouldn’t be food in your stomach when you take your hypothyroidism medication, it’s also important to avoid taking any other medication at the same time. Specifically, antacids, calcium, cholesterol drugs, and iron supplements can each interfere with the way the thyroid hormone is absorbed.

What causes sudden increase in TSH levels?

Your TSH levels will be increased, if: Your thyroid gland is not working as it normally should. Your thyroid gland is infected or inflamed, as in Hashimoto’s thyroiditis, or autoimmune thyroiditis. This occurs when your body is attacking your thyroid gland, for some unknown reason.

How do you know if your thyroid medication is too low?

The symptoms of too little thyroid medication may feel similar to getting a cold. For example, you may feel a sudden surge of shivers, cold hands and feet, and even a sore or swollen throat. One of the signs of low thyroid hormone is brain fog.

Does thyroid meds affect blood sugar?

While thyroid hormone therapy decreases the HBA1C test results, suggesting an improvement of blood sugar control, actual measurements of fasting blood sugars and overall glucose tolerance were unchanged on thyroid hormone therapy.

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Does iodine interact with metformin?

An IV iodine injection may affect the way metformin works in your body. Check to see if the pill that helps you manage your diabetes contains metformin. If you take metformin, it is important to know how to prepare for a test requiring IV iodine.

What are the worst side effects of metformin?

Serious side effects of metformin

  • extreme tiredness.
  • weakness.
  • decreased appetite.
  • nausea.
  • vomiting.
  • trouble breathing.
  • dizziness.
  • lightheadedness.

What should I avoid while taking metformin?

Avoid consuming large amounts of alcohol while on metformin. Drinking alcohol while taking metformin increases your risk of developing low blood sugar or even lactic acidosis. According to the University of Michigan, you should avoid eating high-fiber foods after taking metformin.

How long can you stay on metformin?

The American Diabetes Association (ADA) also recommends metformin for some patients with prediabetes. Generally, if you are prescribed metformin, you will be on it long term. That could be many decades, unless you experience complications or changes to your health that require you to stop taking it.