7Up — Product expired

Today same time I brought a 7up cold drink after almost half of the bottle drinking i realized that the cold drink is expired before 3 month.
The manufacturer date was 21/01/2020, and expire is of 6 month .

So it got expired.
I have talked to that store owner i don't have any grudges to him, but if I got food poisoning then who would be responsible

I have just informed to the company about it.

I am not able to upload the photo but I have the photo proof of the bottle

Regards,
Harish sonar.