Can I buy estrogen (estradiol) online?

I would like to buy estrogen (estrodiol) and a testosterone blocker (spironolactone) from an online store like idrugstore.jp or imedical.jp.

I read on forums that you need to fill out customs forms for any prescription medicine period.

However I read this website:
https://www.mhlw.go.jp/topics/0104/tp0401-1.html
and it looks like I can buy (個人輸入) 1 month of prescription drugs (処方せん薬) without filling any special customs forms?

Can anyone confirm which is true?

The website is informing about import (a product outside Japan to Japan)
I think you want export (a product inside Japan to outside Japan)

Thanks for the answer Justmyday.

I am actually living in Japan currently. The websites that I mentioned are based overseas and import medicine to Japan from countries like Singapore and Thailand.