Thyroid-S from Sriprasit Co., Ltd. in Thailand, 100% all natural thyroid supplement. Shipped in original manufacturer’s sealed packaging.

General Info about supplements for Thyroid support. Be sure to get a strong multivitamin + minerals along with a couple of grams of Vitamin C each day. This has to be a high-quality product.

Iodine, Selenium, Zinc, Vitamin D, Vitamin E, Antioxidants, Essential Fats, and Amino Acids are often used together with Thyroid supplements.

The gland of thyroid in human beings is responsible for producing essential hormones without which, the body cannot properly function. More and more people use natural thyroid treatment products that are based on herbs and other natural ingredients. It seems that more than half of the patients with thyroid malfunctioning are not aware of their own conditions.

The thyroid gland produces important hormones who are responsible for gene transcription and protein synthesis. An under functioning gland is usually called: low thyroid functioning or hypothyroidism.

Low thyroid malfunctioning results into; Altered metabolism, Unusual body weight gain or obesity, Sluggish movement and laziness, Tiredness, fatigue and low immunity, Hair loss and dull skin, Weakness and lack of endurance in the body, Infertility in some cases, Brittleness of the nails, Complications in pregnancy, heart and kidney functioning.

Thiroyd and Thyroid Supplements from Thailand are natural and of very good quality and low price. Obviously there are many brands and names available online. The best thing would be to do some online research and read about supplements on online forums and websites and maybe even try different products if you want to find out more.


Unfortunately, Sriprasit and Greater Pharma don’t publish their ingredients, with the exception of the active ingredient, which in this case is dessicated porcine thyroid, 60 mcg for both products. Thai manufacturers generally consider the passive ingredient list to be proprietary. The Thai FDA does not require them to list ingredients as long as they only use substances that are FDA approved.  The best information about ingredients of Thyroid-S and Thiroyd can actually be found at the following website:

See website:

If you scroll down about halfway, you will find the following information. This is copied directly from the above URL.

“THYROID-S is from Sriprasit Pharma Co., Ltd. in Thailand (sister company of Sriprasit Dispensary R.O.P.) Advertising states that Sriprasit Pharma is “a leading importer of pharmaceutical products, and has been a GMP and ISO 9002-certified manufacturer of pharmaceutical products.” Patients report they are quite pleased with this product. Sriprasit states Thyroid-s is gluten-free, but a patient has reported classic gluten digestive symptoms with it. Tablets are light brown, round, coated. The ingredients, according to Pongsak Songpaisan of Sriprasit are:

Thyroid extract USP

Lactose (a milk sugar and is a filler)

PVP K90 (Polyvinylpyrolidone; water soluble coating/binder; no known hazard)

Avicel (microcrystalline cellulose; holds product together)

Aerosil (silicic acid powder; help disperse the ingredients)

Sodium starch glycolate (helps dissolute/disintegrate the pill)

Magnesium stearate (filling agent)

Eudragit (a common sustain released coating)

Methocel (a water soluble cellulose ether-helps bind pill)

Talcum (a filler)

Ponceau 4r lake (red additive-aluminum)

Tartrazine lake (yellow additive-aluminum)

Brilliant blue FCF lake (blue additive-aluminum)

Sunset yellow FCF (yellow additive)

Titanium dioxide (white)

PEG 6000 (water soluble polymer; binder)

Dimethicone solution  (Thanks to Ruth-Ann for obtaining the ingredients list above; descriptions added)

On 8-09, received an email from a US Doctor who received the following list after emailing Sriprasit:

Fillers used: Corn starch, actose, Avicel  (microcrystalline cellulose; MCC); Binders used: PVP K-90 (Polyvinylpyrrolidone); Preservatives used: Methyl paraben, Propyl paraben; Content in one tablet (60 mg  thyroid  extract): approximately 38 mcg Levothyroxine (T4)  and 9 mcg Liothyronine (T3); Source of extract: Porcine

Patient states: The Thyroid-S tablets are brown with a hard coating, they do not dissolve well as is, but can be chewed. They have a papaya like taste similar to “Thiroyd” below.

THIROYD (and yes, that’s how they spell it) by Greater Pharma Ltd., a leading Thai Pharmaceutical Manufacturer. An email to a patient by Greater Pharma states that “thiroyd” at one grain contains T3 at 8.31 microgram; T4 at 35 microgram, which is 0.013% and 0.058% respectively. Thyroid patient Samantha states: The Thiroyd tablets are white and have a sweet taste almost like papaya or a similar fruit. They dissolve very well sublingually and seem to have a very good potency.  Entire paper insert with info is written in English:  Greater Pharma Manufacturing Co. Ltd , 55/2 Phutthamonthon, Nakhon, Pathom. Like Thyroid-S, this is ordered over the net.

Another thyroid patient, Daniella, was told by the makers of Thiroyd that it is free of aluminum, which is good news if you are avoiding excesses of aluminum for any reason.

As of 5-2013, here are potential fillers as sent to me by a patient in Guam: Lactose, Tapioca Starch, Sodium Starch Glycolate, PVP K-30, PVP K-90, Isopropyl Alcohol, Colloidal Silicon Dioxide, Magnesium Stearate.”

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