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Foods That Prevent the Digestion of Synthroid

by
author image Vanessa Newman
Based in Colorado Springs, Vanessa Newman writes for "Women's Edition" magazine and has been published in "Rocky Mountain Sports," "IDEA" magazine and "The Teaching Professor." She has been writing professionally for over 10 years and holds a master's degree in sports medicine. She has written online courses for companies such as Anheuser-Busch and Chevron, but prefers creative writing.
Foods That Prevent the Digestion of Synthroid
Synthroid Photo Credit Digital Vision./Photodisc/Getty Images

Synthroid is the name brand for levothyroxine sodium, a medication used for low thyroid function, or hypothyroidism. It may also be used to prevent the occurrence of goiters. It is well-tolerated by most individuals since the body produces the natural version of this hormone, but there are foods and medications that interfere with Synthroid and thyroid function in general.

Taking Synthroid

Foods That Prevent the Digestion of Synthroid
Taking Synthroid Photo Credit Jupiterimages/Stockbyte/Getty Images

It is critical that you take Synthroid at least 30 minutes to an hour before eating, according to Synthroid’s official website. In fact, the company recommends you take the pill in the exact dosage prescribed by your doctor with a full glass of water to ensure the best absorption.

Brassica Family Vegetables

Foods That Prevent the Digestion of Synthroid
Broccoli Photo Credit Lars Kastilan/iStock/Getty Images

According to Women to Women's website broccoli, cauliflower, cabbage, Brussels sprouts and rutabaga can interfere with the thyroid hormone. In turn, Synthroid absorption may also be critically affected when these foods are eaten regularly. According to David Williams, M.D., a clinician and researcher, the raw form of these vegetables poses the most detriment to the thyroid.

Soy

Foods That Prevent the Digestion of Synthroid
Soybeans Photo Credit Ryan McVay/Photodisc/Getty Images

Those with thyroid issues and who take Synthroid should avoid soy and soybean products, according to the U.S. Army Medical Department. Soy foods are goitrogenic, meaning they suppress thyroid hormones. If you are using Synthroid it is important to remember that soy can affect its absorption.

Dietary Fiber

Foods That Prevent the Digestion of Synthroid
Lentils Photo Credit studiocascella/iStock/Getty Images

Too much fiber in your diet means that Synthroid may not be absorbed as effectively and the levels in your body are decreased. The National Institutes of Health states that excess fiber impairs absorption of this synthetic medicine. Fiber is only found in plants, so nuts, legumes, fruits, vegetables and grains contain it. Some very high fiber foods include whole wheat bread and cooked black beans or lentils.

Other Foods

Foods That Prevent the Digestion of Synthroid
Walnuts Photo Credit wrangel/iStock/Getty Images

Walnuts, peaches and strawberries are other foods to avoid while on Synthroid. You might absorb less of the actual medication if you eat walnuts and you should avoid cottonseed meal which is typically used as a fertilizer for plants or infant soy formula reports Synthroid’s official website.

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