My father had hypoparathyroidism ,requires A.T.10 of Bayer company to treatment. But now I can't buy it in China. So I need your help, I need to liquid form, please tell me how to buy?

I have hyperparathyroidism, requires Tachystin or A.T. 10 to treatment. I can't buy it in Bulgaria. I need to liquid forms, please tell me how to buy?
I'm pregnant and I'd like to know daily dose of 5 drops, is it danger for the baby?

I need Dihydrotachysterol to cure hypoparathyroidism. I didn't find it in China. I need to liquid form as soon as possible. Thanks a lot.

My friend has hyperparathyroidism, requires A.T. 10 to treatment. She can't buy it in China. I work in USA now. Please tell me how to buy it in USA?
Thanks a lot!