Puis-je prendre le colécalciférol et la lévothyroxine ensemble ?

Pourquoi cela se produit

There is no direct evidence that Vitamin D stops levothyroxine from being absorbed. However, Vitamin D helps the body absorb calcium. If calcium levels in the blood become very high (hypercalcaemia), it can theoretically alter thyroid hormone sensitivity or metabolism. Additionally, if you take Vitamin D as part of a combined calcium supplement, the calcium itself will block the absorption of levothyroxine.

You can take these two medications together. To be safe, it is best to take levothyroxine on an empty stomach, at least 30 to 60 minutes before breakfast or any other medications. If your Vitamin D supplement also contains calcium, you must wait at least 4 hours after taking your levothyroxine before taking the supplement. Your doctor will monitor your thyroid levels (TSH) as part of your routine care.

Hypercalcémie (calcium sanguin élevé)

Ne prenez pas de colécalciférol si vous avez des niveaux élevés de calcium dans votre sang ou votre urine, ou si vous avez des calculs rénaux sévères, car la vitamine D augmente l'absorption du calcium et peut aggraver ces conditions.

Timing of other medications and supplements

Do not take calcium supplements, iron tablets, or antacids at the same time as levothyroxine. These must be spaced at least 4 hours apart, otherwise the levothyroxine will not be absorbed properly.

Heart disease (e.g. angina, heart failure, or history of heart attack)

Levothyroxine increases the workload on your heart. If you experience chest pain, palpitations, or worsening shortness of breath, you must contact your doctor immediately as your dose may need adjusting.

Diabète

Levothyroxine can raise blood sugar levels. If you have diabetes, you must monitor your blood glucose more closely when starting or changing your dose, as your diabetes medication may need to be increased.

Alcool

Il est préférable d'éviter ou de limiter strictement la consommation d'alcool lors de la prise de colécalciférol. Une consommation excessive d'alcool à long terme peut interférer avec la façon dont votre corps absorbe et traite la vitamine D, rendant le traitement moins efficace.

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.

Caféine (Café/Thé)

Coffee and tea 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.

Dairy products (Milk/Yoghurt)

Calcium found in dairy products can interfere with the absorption of levothyroxine. Avoid eating or drinking dairy products for at least 30 to 60 minutes after taking your medication.

Soya products

Soya can stop levothyroxine from being absorbed properly. If you eat a diet high in soya, you may need a different dose of levothyroxine. Consult your doctor before making major changes to your soya intake.

Papaye

Some evidence suggests that eating large amounts of papaya may reduce the absorption of levothyroxine.

High-fibre foods

A diet very high in fibre (such as bran) can reduce the absorption of levothyroxine. Try to keep your fibre intake consistent and discuss any major dietary changes with your doctor.

Repas riches en graisses

Le colécalciférol est une vitamine liposoluble. Il est mieux absorbé par votre corps lorsqu'il est pris avec un repas contenant un peu de graisse (comme des œufs, de l'avocat, des noix ou des produits laitiers).

Taking multiple medicines? Our Vérificateur d'Interactions Médicamenteuses 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.

Avertissement

Ces informations sont fournies à des fins éducatives générales uniquement et ne doivent pas être considérées comme un substitut aux conseils médicaux professionnels. Consultez toujours votre médecin généraliste, votre pharmacien ou un autre professionnel de santé qualifié avant de prendre des décisions concernant vos médicaments. Les circonstances individuelles peuvent varier, et seul un professionnel de santé connaissant votre historique médical peut fournir des conseils personnalisés.