Frequently Asked Questions About Your Thyroid Medication

Q: What’s the difference between WP Thyroid and Nature-Throid?

A: WP Thyroid is available in 8 strengths and only uses two all-natural inactive ingredients. Nature-Throid is available in 13 strengths and is a low-cost option. Both use the same active ingredient – Thyroid USP.

Q: How much do WP Thyroid and Nature-Throid cost?

A: Prices depend on strength and vary by pharmacy. To find a pharmacy in your area, click here.

Q: Are any of the ingredients from WP Thyroid and Nature-Throid from outside the U.S.?

A: No, all ingredients in WP Thyroid and Nature-Throid are sourced from the U.S.

Q: What is the main source for WP Thyroid and Nature-Throid?

A: Thyroid USP (desiccated porcine thyroid) is the active ingredient in both.

Q: Do I need a prescription for WP Thyroid and Nature-Throid?

A: Yes. Both WP Thyroid and Nature-Throid are available by prescription only. To find a thyroid doctor in your area, click here.

Q: Are WP Thyroid and Nature-Throid gluten free?

A: Yes, both medications are free of all glutens.

Q: What are all the ingredients in WP Thyroid and Nature-Throid?

A: You can find WP Thyroid’s ingredients here and Nature-Throid’s ingredients here.

Q: Why is there lactose and how much?

A: Lactose is not added to our formula but it is already present in Thyroid USP raw material as a diluent per USP (United States Pharmacopeia). Lactose is not contraindicated for individuals with allergies to dairy, as lactose is a milk sugar (vs. dairy allergies which are caused by proteins in milk). It is, however, contraindicated for individuals with lactose intolerance. We have had many physicians reporting no side effects while using Nature-Throid with lactose intolerant patients. The amount is very small – less than 5 mg. per 1 Grain vs. 12,000 – 15,000 mg. in a typical 8 fl. oz. glass of milk.

Q: Where can I purchase WP Thyroid and Nature-Throid?

A: Any pharmacy can fill your prescription for WP Thyroid or Nature-Throid. If you are told either is backordered or discontinued, please contact us at 877.797.7997 or, with your pharmacy’s phone number so we can help them order the strength you need from their distributor. Click here for a list of mail order pharmacies.

Q: Are WP Thyroid and Nature-Throid available outside the US?

A: Unfortunately we cannot ship outside the United States. However, we work with a few mail-order pharmacies that may be able to assist you. You can find their information here.

Q: My pharmacy said WP Thyroid or Nature-Throid is on backorder or is discontinued. What should I do?

A: Neither Nature-Throid nor WP Thyroid are discontinued, but we are currently working out of a backorder. If you are having trouble getting your prescription from your usual pharmacy, we recommend contacting some other local pharmacies to see if they have your strength in stock. You can also try any of the mail-order pharmacies listed on our website for a potentially faster turnaround: click here

Q: Do I need to chew the WP Thyroid and Nature-Throid tablets?

A: Both medications were formulated to be swallowed whole on an empty stomach with an 8oz glass of water. Use as directed by your doctor.

Q: Are WP Thyroid and Nature-Throid sublingual?

A: No thyroid drug is FDA approved for sublingual usage. Both tablets were formulated to be swallowed whole on an empty stomach with an 8oz glass of water. Use as directed by your doctor.

Q: When should I take my thyroid medication?

A: Use as prescribed by your doctor. Take as a single dose on an empty stomach, at least 30-60 minutes before consuming food or caffeine. Some medications and supplements may lower the effectiveness of WP Thyroid and Nature-Throid when taken simultaneously, so it is important to take WP Thyroid or Nature-Throid at least one hour before any other medication. Calcium supplements, iron products, or antacids need to be taken four hours apart.

Q: How can I find a doctor in my area that prescribes WP Thyroid and Nature-Throid?

A: Click here for a list of thyroid doctors in your area.

Q: How should I store WP Thyroid and Nature-Throid?

A: Store WP Thyroid and Nature-Throid at room temperature, 59°-86°F (15°-30°C), away from heat, moisture, and light. Dispense in tight, light-resistant containers as defined in the USP/NF. Keep out of reach of children and pets.

Q: Why has my WP Thyroid become discolored?

A: Since WP Thyroid is uncoated and formulated with minimal pure ingredients, the tablets can change color by absorbing ambient humidity. If the tablets are stored in their original container and at room temperature (59° (15°) – 86° F (30° C) with an ambient humidity of 10-65%, no discoloration occurs. However, exposed tablets outside of proper storage conditions still conform to USP specifications for both T4 and T3 potency and stability.

Q: Can I still drink my coffee every morning when taking WP Thyroid and Nature-Throid?

A: Wait 30-60 minutes after taking a WP Thyroid or Nature-Throid dose before consuming any caffeine products.

Q: I’m currently on a synthetic medication, how much WP Thyroid or Nature-Throid would I need?

A: Your doctor will know which dosage is right for you, but you can click here for our conversion chart to compare the differences in strengths between different types of medication.

Q: How do I know what my pharmacy gave me is WP Thyroid or Nature-Throid?

A: Our strength chart shows what the tablets looks like in each strength. Click here for WP Thyroid tablet strengths. Click here for Nature-Throid tablet strengths. If your pills do not match those in the picture, please contact your pharmacy.

Q: Why do Armour and WP Thyroid and Nature-Throid have different milligram amounts?

A: Armour rounds their milligram amounts, while WP Thyroid and Nature-Throid provide a more precise number. So while Armour says 60mg and WP Thyroid and Nature-Throid say 65mg, the gram amounts are actually the same.

Q: How are the pigs raised?

A: RLC Labs utilizes USDA pigs, which are not given blanket hormones or antibiotics unless specifically needed. You can learn more about USDA practices at

Q: Are the pigs organic?

A: No, but we understand the importance of organically raised pigs and hope to have an organic option available in the future.