I'm quite surprised by all of the negative reviews regarding KVK's generic products, specifically their immediate release oxycodone. I'd been receiving the generic Mallinckrodt oxycodone for the last couple years, which worked great. A few months ago I received the Rhodes brand of IR oxycodone, which did absolutely nothing for the pain and in addition gave me GI issues. I let my pharmacy know, and for some reason they weren't able to order the Mallinckrodt, so they ordered the KVK brand for me. Not only is it better than even the Mallinckrodt, it's the best generic oxycodone I've had, and I've been on this medication for a number of years. From then on I make sure the KVK is on stock & if it's not, my pharmacy special orders it for me.
I'd recommend giving it another chance, especially as the chains have been switching to Rhodes as well, which is utter garbage. KVK-Tech is a highly regarded pharma company and their quality is second to none.