I will enlist some of the top pharma-D colleges of Tamil Nadu -

1. Madras Medical college, Chennai
2. Madurai Medical college, Madurai
3. Annamalai University, Annamalai Nagar
4. Dr MGR Education and research institute, Chennai
5. National Institute of research, Chennai

Refer to the site below for more detailed information regarding same -

https://pharmacy.careers360.com/colleges/list-of-government-pharmacy-colleges-in-tamil-nadu

Best wishes. Thank you.