Canada's top pharmacy chain is hoping to be the first in the country to legally sell over-the-counter medical marijuana.

Walgreens, the largest drug retailing chain in the U.S. with more than 8,000 stores in all 50 states, is now tackling the subject of medical marijuana.

Bruce Kennedy ~ WeedWorthy.com~

A certified pharmacist and leading medical marijuana advocate sees consumer demand expanding at his suburban Chicago dispensary.

A recent post on Walgreens' blog raised eyebrows in the medical marijuana community.