A few weeks ago, I took 20 mg of vicodin. Beforehand, I'd had grapefruit juice and tagamet. Also, I ate a high fat meal about 20 minutes after taking the pills. About 75 minutes after I'd taken the pills, I felt a tremendous PEAK of a type that I haven't felt in years. My question is whether it would have been possible to either increase or extend the peak? If so, how much more should I take? Thanks in advance.