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 www.drreddys.com

July 7, 2020

To,

The Secretary

BSE Limited

National Stock Exchange of India Limited

New York Stock Exchange Inc.

Dear Sir/Madam,

Sub: Newspaper advertisement.

Please find enclosed copies of newspaper advertisement regarding notice of 36th annual general meeting of the company and e-voting information as published in Financial Express and Nava Telangana on July 7, 2020.

This is for your information and records.

With regards,

/s/ Sandeep Poddar

Sandeep Poddar

Company Secretary