Most of the thyroid preparations are produced in Iwaki Fukushima

Thyroid preparations(T4) called Thyradin has 98% of share in Japan.

It’s produced in Iwaki factory of Aska Pharmaceutical, where is about 56 km south to Fukushima plants.



Fukushima citizens who went through Fukushima explosions have already started suffering from thyroid disease.

It’s levothyroxine sodium, Hashimoto’s thyroiditis patients and patients who had thyroid operation are to take 25~400μg once a day.

At this moment, Aska Pharmaceutical has no plan to move the factory.

They measure the products just before the shipment by GM survey meter (TGS-133), and the result is supposed to be in the normal back ground range about all the products. They also state, amount of intake is too small to be harmful.

However, they use tap water for the process, which is checked by Iwaki city government. They only measure Iodine 131, and cesium 134 and 137.

Additionally, the atmospheric dose in the factory is measured only by Pocket digital dose meter.

Most of the thyroid preparations are produced in Iwaki Fukushima


Source 1 2 3


About this site

This website updates the latest news about the Fukushima nuclear plant and also archives the past news from 2011. Because it's always updated and added live, articles, categories and the tags are not necessarily fitted in the latest format.
I am the writer of this website. About page remains in 2014. This is because my memory about 311 was clearer than now, 2023, and I think it can have a historical value. Now I'm living in Romania with 3 cats as an independent data scientist.
Actually, nothing has progressed in the plant since 2011. We still don't even know what is going on inside. They must keep cooling the crippled reactors by water, but additionally groundwater keeps flowing into the reactor buildings from the broken parts. This is why highly contaminated water is always produced more than it can circulate. Tepco is planning to officially discharge this water to the Pacific but Tritium is still remaining in it. They dilute this with seawater so that it is legally safe, but scientifically the same amount of radioactive tritium is contained. They say it is safe to discharge, but none of them have drunk it.


February 2012