Caffeine in coffee and other caffeinated beverages can affect the absorption of the thyroid drug levothyroxine by making the drug pass through your gut too quickly. This can cause your T4 hormone levels to drop or fluctuate. To avoid this, levothyroxine should be taken on an empty stomach and you should wait an hour before eating anything or drinking a caffeinated beverage.
If you have trouble controlling your thyroid hormones and your doctor believes that intestinal absorption is to blame, you may be switched to the soft gel or liquid formation of levothyroxine called Tirosint and Tirosint-Sol.
A thyroid drug works best if you take it correctly and consistently. This means taking it every day, ideally at the same time in the morning on an empty stomach. Taking your drugs at different times or with food can cause your hormones levels to fluctuate. You should also not take levothyroxine within four hours of a calcium supplement or two to four hours of an iron supplement as these can also affect absorption. Separating the doses can ensure you get the best results from your thyroid drugs.
Besides coffee, some other foods, supplements, and medications can affect how well levothyroxine works. These include:. It may be OK to do so but talk with your doctor first. The usual recommendation is to take it on an empty stomach in the morning.
However, you can take it in the evening at least three to four hours after you've eaten. Losing weight with thyroid disease can be a struggle. Our thyroid-friendly meal plan can help. Sign up and get yours free! Wegrzyn NM. Malabsorption of L-T4 due to drip doffee: a case report using predictors of causation. J Acad Nutr Diet.
Eghtedari B, Correa R. In: StatPearls [Internet]. Updated August 6, Cornelis MC. The medication is usually taken every day and is generally required for life. Caffeine is a bitter-tasting substance found in all non-decaffeinated coffees as well as many teas, sports drinks and soft drinks. Caffeine is an ingredient in some pain relief medication, including Maximum Strength Anacin and Extra Strength Excedrin.
Chocolate also contains caffeine, although to a much lesser degree. Caffeine stimulates the nervous system and can help you stay alert. Too much caffeine, however, has deleterious effects and can lead to irritability, sleeplessness and abnormal heart rhythms.
Ask your healthcare provider or pharmacist for help finding a dosing plan that works for you. Skip to main content Search for a topic or drug. Is it safe to mix Synthroid and coffee? Learn the potential side effects of taking thyroid medication with anything but a tall glass of water. By Laura Wheatman Hill Aug. Top Reads in Drug Info. Can you mix Trintellix and alcohol? Does hydroxyzine for anxiety work? The study was designed to test gastrointestinal absorption of L-T 4 in patients taking L-T 4 while simultaneously drinking coffee or espresso.
Who was studied? The study subjects were eight patients, all of whom were women. Their mean age was 45 years and their serum TSH levels were 2. Ten healthy volunteers, four men and six women aged 24 to 52 years, were also studied as controls. How was the study done? L-T 4 absorption was tested in patients divided into several groups, some taking L-T 4 with water alone, others using espresso alone to help sallow their L-T 4 pills, and in other cases volunteers used water alone with L-T 4 and espresso 1 hour later, and lastly L-T 4 was taken with bran in water.
What were the results of the study?
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