Exhibit 99.1

Dr. Reddy's Laboratories Ltd.

8-2-337, Road No. 3, Banjara Hills

Hyderabad – 500 034, Telangana, India

CIN: L85195TG1984PLC004507

Tel: + 91 40 4900 2900

Fax: + 91 40 4900 2999

Email: mail@drreddys.com

Web: www.drreddys.com

June 30, 2025

National Stock Exchange of India Ltd. (Scrip Code: DRREDDY)

BSE Limited (Scrip Code: 500124)

New York Stock Exchange Inc. (Stock Code: RDY)

NSE IFSC Ltd. (Stock Code: DRREDDY)

Dear Sir/ Madam,

Sub: Notice of 41^st Annual General Meeting (AGM)

Pursuant to the provisions of Regulation 34(1) of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, please find enclosed copy of Notice convening the 41^st Annual General Meeting of the Company, scheduled to be held on Thursday, July 24, 2025 at 11:00 A.M. IST through Video Conferencing/ Other Audio-Visual Means (“VC/ OAVM”). The Notice of AGM is also available on the Company’s website and can be accessed at the following link:

Notice of 41st Annual General Meeting

Please also refer below AGM related information:

Time and date of AGM	11:00 a.m. IST, Thursday, July 24, 2025
Cut-off date for e-voting	Thursday, July 17, 2025
E-voting start time and date	9.00 a.m. IST, Sunday, July 20, 2025
E-voting end time and date	5.00 p.m. IST, Wednesday, July 23, 2025
E-voting website of NSDL	https://www.evoting.nsdl.com/

This is for your information and records.

Thanking you.

Yours faithfully,

For Dr. Reddy’s Laboratories Limited

K Randhir Singh

Company Secretary, Compliance Officer and Head-CSR