The general range
Brand guidance for a NICE can is about 2–4 hours of duration after an onset of roughly 15–30 minutes. Treat that as a planning range, not a promise: how long effects last depends on how much you drank, your tolerance, your metabolism, whether you ate, and individual variation that no chart can capture.
What stretches or shortens the window
More cans means more THC to process, which tends to extend the tail end of the experience rather than just intensifying the peak. Drinking on a full stomach can slow the whole curve down — later onset, longer fade. Regular consumers often report shorter, softer windows than newcomers at the same amount, which is one more reason a first-timer should start with half a can and give it a full hour.
'Feeling it' ends long before 'in your system' does
When the noticeable effects fade, the THC has not vanished — your body is still metabolizing it, and THC metabolites remain detectable well after the experience is over. How long depends on frequency of use, body composition, and the type of test, and we do not publish detection-time estimates because they mislead as often as they help. The only safe rule: if you are subject to drug testing of any kind, do not consume THC products.
Planning around the window
Give the full window room before anything that needs your full alertness, and never drive during or after it — impairment can outlast the feeling of being impaired. If an evening can is your routine, note your own typical timing once on a free day; your personal range is more useful than any average.