By definition, it is not a drug.

It is classified as a nutraceutical. You can buy it on internet.

You can try to buy it on ebay. It might be a little cheaper.

http://www.ebay.com/sch/i.html?_nkw=cellgevity&clk_rvr_id=413019063371&adpos=1s1&crlp=10943687796_2416792&MT_ID=70&tt_encode=raw&keyword=cellgevity&geo_id=9232&adgroup_id=3343499076&crdt=0