What is iodothyrox?
Jodthyrox is a combination preparation containing levothyroxine (thyroid hormone T4) and potassium iodide (iodine). It is used when both a thyroid subfunction and an iodine deficiency are present – a combination that is common in Germany.
Germany is considered a shortage of iodine. Jod is an essential component for the production of thyroid hormones T3 and T4. If the thyroid gland receives too little iodine, it cannot produce enough hormones.
Jodthyrox combines direct hormone substitution (Levothyroxin) with iodine (potassium iodide) in one tablet.
Active Ingredients & Mechanism of Action
Active ingredient: Levothyroxin-Natrium (T4) / Kaliumjodid
Jodthyrox acts on two components:
Levothyroxine (T4):
- Replaces the missing thyroid hormone
- Partially converted to T3 in the body
- Normalizes metabolism immediately
Calium iodide:
- Delivers iodine as raw material for thyroid gland
- The thyroid can produce its own hormones
- prevents an increase in thyroid gland (Struma)
- Supports the remaining thyroid function
Ingenious combination: Levothyroxin compensates for the current hormone deficiency, while iodine supports the thyroid in the long term in its own hormone production.
Who is it suitable for?
Jodthyrox is suitable for:
- Hypothyroidism in combination with iodine deficiency
- Struma (dithyroid enlargement) with subfunction
- Strumaprophylaxe after thyroid surgery (partial resection)
- Euthyreote Struma (enlarged thyroid gland with normal function, in combination with light subfunction)
Not suitable for:
- Hashimoto-thyreoiditis (Jod can worsen the autoimmune reaction!)
- thyroid hyperfunction
- thyroid nautical (hot knot)
- Jodallergie
Available Dosages
Available strength:
- 100 mcg Levothyroxin + 131 mcg potassium iodide (corresponding to 100 mcg iodine)
Dosing:
- Usually 1 tablet per day
- dose adjustment possible via combination with additional L-thyroxin
- Individual adjustment according to TSH value
How to Take
Intake:
- Morning, sober, 30 minutes before breakfast
- With a glass of water
- Not with coffee or milk
Default: Mind. 2 hours to calcium, iron, magnesium Mind. 4 hours to cholestyramine
Regular checks:
- TSH value every 6-12 months
- thyroid sonography (size development)
Contraindications
**Jodthyrox must not be taken at:* *
- thyroid nautical (functional autonomy)
- thyroid hyperfunction
- Hashimoto-thyreoiditis (Jod component problematic!)
- Jodallergie
- Untreated secondary bark insufficiency
- Acupine heart attack
Preview at:
- coronary heart disease
- Older patients
- Known thyroid nodes (exclude autonomy!)
pregnant: thyroid hormones and iodine are important in pregnancy. Adjust dosage if necessary. Regular checks essential.
Possible Side Effects
For correct dosage: Usually no side effects.
For overdose (Levothyroxin proportion):
- Heart turf, palpitations
- Internal rest
- Sweating
- Weight loss
- diarrhea
By iodine component:
- In predisposition: triggering a thyroid hyperfunction
- Jodallergy (very rare): Skin rash, swelling
** Patients with Hashimoto-thyreoiditis should not take any additional iodine, as this can increase the autoimmune reaction.
Interactions
Identical with L-thyroxine:
- calcium, iron, magnesium (2 h distance)
- Cholestyramine (4-5 h distance)
- Antazida
Jod specific:
- Amiodaron (contains a lot of iodine – monitoring!)
- Lithium (influenced thyroid function)
- High iodine intake via food (seaweed, iodine-rich algae)
Frequently Asked Questions
Similar Medications
Is iodothyrox right for you?
A licensed doctor will review your information and issue a prescription if suitable. Discreet and secure.
Important Notice
This information does not replace medical advice. If you have questions about your health or the suitability of this medication, please consult a doctor or pharmacist.
Important Safety Information
This service operates under German pharmaceutical law (HWG). For risks and side effects, read the package leaflet and consult your doctor or pharmacist. All medications are dispensed from a licensed pharmacy in Germany.