From March 1st through to March 31st, #MyRexallPharmacist invites Canadians to share a positive experience with their Rexall pharmacist for a chance to win a daily $100 Rexall gift card and the Grand Prize of 5,000 AIR MILES ®™ Reward Miles  Canadians can share their story on Facebook, Instagram or Twitter using #MyRexallPharmacist or…