That particular Nitric Oxide product? NO!!
I have used others: BSN's N.O.-XPLODE, MuscleTech's Pump-Tech (powder) & Nano Vapor, Gaspari's SuperPump 250, and (currently) Six Star's N.O. Fury.
Pump-Tech is gone (the only reason I bought it was because the powder were marked down to $15). So, of the ones I've listed, I'd give the edge, as far as effectiveness, to Nano Vapor. It's the only one that you can take immediately before your workout, instead of 30-45 minutes beforehand.
And, you can feel it, within 2-5 minutes of ingestion (love those tingly feelings in the hands and forehead).
Pricewise, (unless you can get them marked down at GNC), the nod goes to N.O. Fury.