We Solve Your

Regulatory Puzzles

Providing Quality Service

Since it’s founding in 1981 by David McCarthy, McCarthy Consultant Services Inc. (MCSI) has played a vital role in the world of Canadian regulatory affairs. Shaped by the belief that sound regulatory management is the key to business success, MCSI has evolved into an industry leader across Canada and throughout the world. MCSI is trusted and valued by the pharmaceutical, biotechnology, medical device, food, natural health products and cosmetic industries for its efficient, timely, and effective regulatory work.


News and Events

Happy Victoria Day long week-end from MCSI! Our offices will be closed from Friday May 21st, 5:00 pm to Tuesday May 25th at 9:00 am. Have a safe and relaxing holiday!


CHFA Connect – Uncover the hottest products and trends in the natural health & organic products industry, virtually. Dates: April 16 & 17 Hours: 8AM – 3PM PDT / 11AM– 6PM EDT


to all, from MCSI. Our offices will be closed Good Friday April 2nd, and Monday April 5th, 2021. We wish you a happy, healthy and safe Easter weekend.


Happy Family Day weekend from MCSI! Stay safe, stay well…


We invite you to contact us!

McCarthy Consultant Services Inc.
14-320 Harry Walker Parkway North,
Newmarket, Ontario Canada L3Y 7B4

Phone: 905.836.0033
Fax: 905.836.0006
E-Mail: mail to:accounting@mccarthyconsultant.com


Let’s Get In Touch