Posso prendere Levotiroxina e Losartan insieme?
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Pubblicato originariamente 25 Gen 2026
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There is no known direct interaction between levothyroxine and losartan. Both medications can be taken together safely.
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Perché succede
Levothyroxine is a synthetic thyroid hormone, and losartan is an angiotensin II receptor blocker (ARB) used for blood pressure. They work through entirely different pathways in the body and do not interfere with how the other is absorbed, broken down, or excreted.
Cosa dovresti fare
Torna ai contenutiYou can continue taking both medications as prescribed. It is generally recommended to take levothyroxine on an empty stomach, at least 30 to 60 minutes before breakfast, to ensure it is absorbed properly. Losartan can be taken with or without food at any time of day, as long as you are consistent.
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Precauzioni importanti
Torna ai contenutiGravidanza
Non devi assumere losartan se sei incinta o hai intenzione di rimanere incinta. Può causare gravi danni o la morte di un bambino non ancora nato, soprattutto se usato durante il secondo e il terzo trimestre.
Heart conditions (e.g. angina, heart failure)
If you have a heart condition, your dose must be started very low and increased slowly. Contact your doctor immediately if you experience chest pain or palpitations, as levothyroxine increases the workload on your heart.
Interaction with supplements (Calcium/Iron)
Do not take calcium tablets, iron supplements, or multivitamins at the same time as levothyroxine. You must leave a gap of at least 4 hours between these supplements and your levothyroxine to ensure the medicine works.
Diabete
La levotiroxina può aumentare i livelli di zucchero nel sangue. Se hai il diabete, devi monitorare più attentamente la glicemia quando inizi o cambi la dose, poiché potrebbe essere necessario aumentare la tua terapia per il diabete.
Avvertenze su cibo e bevande
Torna ai contenutiAlcol
It is best to avoid or strictly limit alcohol while taking losartan. Both alcohol and losartan lower your blood pressure; combining them can make you feel very dizzy, lightheaded, or faint, especially when standing up.
It is best to avoid or strictly limit alcohol while taking levothyroxine. While there is no direct chemical reaction, alcohol can affect thyroid function and may worsen symptoms like tiredness or mood changes.
Timing of dose and food/drink
Take your levothyroxine on an empty stomach, at least 30 to 60 minutes before breakfast or any caffeine. Food, milk, and coffee prevent the medicine from being absorbed properly.
Caffeina (Caffè/Tè)
Caffeine can significantly reduce the amount of levothyroxine your body absorbs. You should wait at least 30 to 60 minutes after taking your tablet before drinking coffee or tea.
Prodotti lattiero-caseari (Latte, Yogurt, Formaggio)
Avoid consuming dairy products at the same time as your levothyroxine. Calcium found in dairy can interfere with how your body absorbs the medicine, making it less effective. It is best to wait at least 4 hours between taking levothyroxine and consuming dairy.
Prodotti a base di soia
Soya can interfere with the absorption of levothyroxine. If you regularly eat or drink soya products, your doctor may need to monitor your thyroid levels more closely. Avoid consuming soya at the same time as your dose.
Kelp and Seaweed
These foods are naturally high in iodine. Too much iodine can interfere with your thyroid treatment and make your condition worse.
Alimenti ricchi di fibre
A diet very high in fibre can reduce the absorption of levothyroxine. If you significantly change your fibre intake, inform your doctor as your dose may need adjusting.
Potassium-rich foods (e.g., Bananas, Spinach) and Salt Substitutes
Losartan can increase the levels of potassium in your blood. You should avoid using salt substitutes (like Lo-Salt) that contain potassium and speak to your doctor before making large changes to your diet regarding potassium-rich foods.
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Uso di altri medicinali
Torna ai contenutiTaking multiple medicines? Our Controllo Interazioni Farmaci helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do about them.
Avvertenza
Queste informazioni sono solo a scopo educativo generale e non devono essere considerate un sostituto del consiglio medico professionale. Consultate sempre il vostro medico di base, farmacista o un altro professionista sanitario qualificato prima di prendere decisioni sui vostri farmaci. Le circostanze individuali possono variare, e solo un professionista sanitario che conosce la vostra storia medica può fornire una guida personalizzata.
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Storia dell'articolo
Le informazioni su questa pagina sono scritte e revisionate da clinici qualificati.
25 Gen 2026 | Pubblicato originariamente

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