The National Advisory Committee on Immunization says the Johnson & Johnson vaccine can be used on people thirty and older.
However, it recommends limiting it to people who don't want to wait for a Pfizer or Moderna shot.
Last month, the NACI issued similar advice about the AstraZeneca dose.
Both are suspected of causing blood clotting in rare cases.
In Canada, 1.7 million people have received at least one dose of AstraZeneca.
Seven Canadians have developed blood clots so far, and one was fatal.
While no Johnson & Johnson doses have been administered in Canada yet, in the U.S., 17 out of the eight million people who have received the vaccine so far have developed blood clots.
There are 300,000 Johnson & Johnson doses in a Toronto facility, pending an investigation to determine the safety of the shots after it was discovered they were partly made at an American facility that was recently cited for violating safety and quality-control standards.
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