Yes, you are eligible for UPSC exams with a D.Pharm (Diploma in Pharmacy) qualification under certain conditions.

The UPSC Civil Services Examination (CSE), which recruits officers for IAS, IPS, and other services, requires a bachelor's degree (https://upsc.gov.in/) . A D.Pharm is a diploma, not a bachelor's degree.

Complete your B.Pharm (Bachelor of Pharmacy) or any other graduation program in a recognized university. B.Pharm graduates are eligible for UPSC CSE.

https://competition.careers360.com/exams/upsc-cse

I hope it helps!