I have a herniated disk. I have been given Tramadol 50mg and Hydrocodone 7.5mg. I took a tramadol, which didn't help my pain. When the six hours are up from taking the tramadol would it be safe to try the hydrocodone? I have read that the two have interactions when taken together and I don't want to cause an adverse reaction. But if I waited six hours after taking the tramadol would it be safe to take the hydrocodone?