Exhibit 99.1

	1500 Robert-Bourassa Blvd.
Date: March 11, 2020	7th Floor
	Montreal QC, H3A 3S8
	www.computershare.com

To: All Canadian Securities Regulatory Authorities

Subject: BELLUS HEALTH INC.

Dear Sir/Madam:

We advise of the following with respect to the upcoming Meeting of Security Holders for the subject Issuer:

Meeting Type :	Annual General and Special Meeting
Record Date for Notice of Meeting :	March 27, 2020
Record Date for Voting (if applicable) :	March 27, 2020
Beneficial Ownership Determination Date :	March 27, 2020
Meeting Date :	May 14, 2020
Meeting Location (if available) :	Laval, QC
Issuer sending proxy related materials directly to NOBO:	Yes
Issuer paying for delivery to OBO:	Yes
Notice and Access (NAA) Requirements:
NAA for Beneficial Holders	No
NAA for Registered Holders	No

Voting Security Details:
Description	CUSIP Number	ISIN
COMMON SHARES	07987C204	CA07987C2040

Sincerely,

Computershare
Agent for BELLUS HEALTH INC.