About Your Condition
Where can I find more information about hypothyroidism?
Resources such as the American Thyroid Association offer valuable information, support, and advocacy for individuals living with hypothyroidism.
When should I start or change my treatment for hypothyroidism?
It’s important to regularly review your symptoms and overall well-being with your healthcare provider. If you notice persistent symptoms or changes in how you feel, discuss them with your provider to determine if adjustments are needed.
Understanding
RenThyroid™
(Thyroid Tablets, USP)
RenThyroid is a prescription medicine indicated as a replacement or supplemental therapy in patients with hypothyroidism.
RenThyroid has not been reviewed by the FDA for safety or efficacy.
What is RenThyroid?
RenThyroid is a natural desiccated thyroid (NDT) treatment containing T4 (Thyroxine) and T3 (Triiodothyronine) thyroid hormones.
I am still symptomatic after taking levothyroxine (T4). Is RenThyroid an option?
Levothyroxine only provides T4 hormone, and some patients may not convert T4 to the active T3 hormone efficiently. RenThyroid contains both T4 and T3, to help improve symptoms of hypothyroidism. Consult your healthcare provider to see if RenThyroid could be a beneficial option for you.
What are the active ingredients in RenThyroid?
The active ingredients in RenThyroid are T3 (liothyronine) and T4 (levothyroxine) hormones, which are derived from the thyroid glands of pigs.
Is RenThyroid gluten-free?
Yes, RenThyroid is free from gluten-containing grains such as wheat, barley, and rye.
What if my pharmacy tries to switch RenThyroid to another medication?
If you and your healthcare provider decide that RenThyroid is appropriate for you, ask your provider to include on your prescription: “Dispense as Written” (or similar language according to your state pharmacy requirements). This helps prevent substitutions at the pharmacy and ensures you receive RenThyroid as prescribed.
Dosing and Administration
How is the dose of RenThyroid determined?
The starting dose of RenThyroid is typically 30 mg per day, with possible adjustments of 15 mg increments every 2 to 3 weeks based on symptom management and lab results. Your healthcare provider will guide you through this process.
What should I do if I miss a dose of RenThyroid?
If you miss a dose, take it as soon as you remember. If it’s almost time for your next dose, skip the missed dose — do not take a double dose.
How can I ensure I won’t run out of medication?
A missed dose can affect thyroid hormone levels, so be sure to plan ahead. Sign up for automatic refills with your pharmacy or set reminders to order your medication in advance.
Can I stop taking RenThyroid if I feel better?
Do not discontinue RenThyroid without consulting your healthcare provider, even if you feel better. Stopping medication abruptly can lead to worsening symptoms.
Could nutritional supplements interfere with how RenThyroid works?
Yes, certain supplements and medications can interfere with thyroid hormone absorption. Some can also affect lab tests. Always inform your healthcare provider about any supplements or medications you are taking or plan to take to avoid potential interactions, especially any anticoagulants, diabetes drugs, oral contraceptives, or biotin.
What are the side effects of RenThyroid?
Who should not take RenThyroid?
Do not use RenThyroid if you have an uncorrected lack of adrenal hormones, high thyroid hormone levels, or allergies to any of the product ingredients.
Thyroid hormone drugs, including RenThyroid, should not be used to treat obesity. Larger doses may cause serious or even life-threatening events, especially when used in combination with certain other drugs used to reduce appetite. RenThyroid should also not be used for male or female infertility. Please review the Important Safety Information below and ask your provider if RenThyroid is right for you.
How should RenThyroid be stored?
Store RenThyroid at room temperature, away from moisture, heat, and direct sunlight. Keep it out of reach of children.
USE:
RenThyroid™ (Thyroid Tablets, USP) is a prescription oral medication used to replace or supplement thyroid hormones in patients with hypothyroidism from any cause, except transient hypothyroidism during the recovery phase of subacute thyroiditis.
- RenThyroid should not be used for male or female infertility unless this condition occurs with low thyroid levels.
- Taking too much RenThyroid may affect your cardiovascular system, especially if you are elderly or have heart problems. Tell your doctor immediately if you have any signs of chest pain, increased pulse, palpitations, excessive sweating, or any other unusual event.
- Tell your doctor about any other medical conditions you may have, especially heart disease, diabetes, blood clotting problems, and adrenal or pituitary gland problems. The dose of other drugs you may be taking for these conditions may have to be changed while you are taking RenThyroid. If you have diabetes, monitor your blood sugar levels and/or the glucose in your urine, and immediately tell your doctor if there are any changes.
- Tell your doctor about all of the medicines you take, including prescription and over-the-counter medicines, vitamins and supplements. Especially tell your doctor if you take anticoagulants, diabetes drugs, oral contraceptives, or biotin.
- In infants, excessive doses of RenThyroid may cause a condition called craniosynostosis (premature closure of the skull bones).
- In children, partial hair loss may occur during the first few months of taking RenThyroid.