YOU SAID:

I made many potions today but then I drank them.

INTO JAPANESE

今日はたくさんのポーションを作りましたが、その後飲んでしまいました。

BACK INTO ENGLISH

I made a lot of potions today, but I drank them afterwards.

INTO JAPANESE

今日はポーションをたくさん作ったけど、後で飲んだ。

BACK INTO ENGLISH

I made a lot of potions today, but I drank them later.

INTO JAPANESE

今日はポーションをたくさん作りましたが、後で飲みました。

BACK INTO ENGLISH

I made a lot of potions today, but I drank them later.