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Can Armour Thyroid cause high blood pressure?

Medically reviewed by Carmen Pope, BPharm. Last updated on Aug 29, 2023.

Official answer

by drugclasses.com

High blood pressure is not a common side effect of Armour Thyroid but it may occur if too much Armour Thyroid is taken. High blood pressure can also occur a result of low thyroid levels (hypothyroidism) and this may persist despite treatment with Armour Thyroid. One review showed this high blood pressure persistence was due to increased aortic stiffness in people with hypothyroidism.

Do not increase your dosage of Armour Thyroid without your doctor telling you to do so because too much Armour Thyroid is not safe.

Side effects of Armour Thyroid to watch for and contact your doctor about include:

  • Nausea
  • Vomiting
  • Headache
  • Diarrhea
  • Joint pain or muscle cramps
  • Fever
  • Increased heat sensitivity
  • Appetite changes
  • Menstrual cycle changes in women.

Taking too much Armour Thyroid can cause overdose symptoms that include:

  • A racing heart
  • Chest pain
  • Shortness of breath
  • Anxiety
  • Irritability
  • Tremors
  • Insomnia (sleeplessness)
  • Sweating.
References
  • Harrar S. What You Need to Know About Hypothyroidism Extract Medications 23 March 2021. https://www.endocrineweb.com/conditions/hypothyroidism/natural-thyroid-extract-comeback
  • Victor Bernet & Ana-Maria Chindris (2012) The potential dangers of supplements and herbal products marketed for improved thyroid function, Expert Review of Endocrinology & Metabolism, 7:3, 247-249, DOI: 10.1586/eem.12.16
  • Armour Thyroid Updated 05/2021[CF1] . Allergan, Inc. https://www.drugclasses.com/pro/armour-thyroid.html
  • Dernellis J, Panaretou M. Effects of thyroid replacement therapy on arterial blood pressure in patients with hypertension and hypothyroidism. Am Heart J. 2002 Apr;143(4):718-24. doi: 10.1067/mhj.2002.120766. PMID: 11923811.

Read next

Does Armour Thyroid cause weight gain or weight loss?

Although weight loss can be a side effect of Armour Thyroid in people taking it for low thyroid levels you should not take Armour Thyroid for the sole purpose of losing weight. Using Armour Thyroid to reduce weight in people with normal thyroid levels is dangerous, not safe, and can be life-threatening. Strokes, seizures, shock, coma, and death have been reported in people who have taken higher than recommended dosages of thyroid hormone preparations for weight loss. Some symptoms of Armour Thyroid toxicity (overdose), such as confusion, disorientation, sleep disturbances, or heart changes may not appear until several days after ingestion. Armour Thyroid should not be used as a treatment for weight loss or obesity. Weight gain is an uncommon side effect of Armour Thyroid but may occur if the dosage of Armour Thyroid is not supplementing their low thyroid levels enough. Continue reading

Can Armour Thyroid make you tired?

Armour Thyroid is unlikely to make you tired or sleepy. Tiredness is a symptom of low thyroid levels (hypothyroidism) and if you still feel tired while taking Armour Thyroid then you should talk to your doctor because you may need the dosage of Armour Thyroid increased. You should never increase the dosage of Armour Thyroid yourself, without being under medical supervision because too much Armour Thyroid is not safe. Continue reading

What is the best time of day to take blood pressure medication?

Research has suggested that taking your blood pressure medication at night instead of in the morning can provide better blood pressure control at night without compromising daytime blood pressure control and reduce your overall risk of dying because of cardiovascular disease by 45%. Continue reading

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