The Short Answer
Well-formulated ones, with meaningful doses of DHM, B vitamins, milk thistle and L-theanine, taken before bed — yes, they work for most people most of the time. Poorly formulated ones, primarily electrolytes with token active ingredients — no, not meaningfully.
What "Working" Actually Means
The realistic expectation for a good hangover supplement is not being hangover-free. The realistic expectation is a meaningfully better morning — reduced headache severity, less nausea, clearer thinking, less next-morning anxiety. If you currently have a rough 7-8 out of 10 hangover on a heavy night, a supplement like Revive typically brings that to a 3-4 out of 10 for most users. That's the benchmark.
Why Results Vary
Individual variation in liver enzyme activity, body composition and alcohol metabolism means the same supplement produces different results for different people. The people who don't notice much benefit tend to be those who forgot to drink water before bed, drank more than usual, or have significantly compromised liver function.
The Most Common User Feedback
The most consistent positive reports across Revive users are: (1) reduced headache, (2) less nausea, (3) reduced next-morning anxiety. Sleep quality improvement — waking up feeling more rested despite the same number of hours — is also commonly reported and relates to the L-theanine component. The anxiety reduction is the most frequently cited "unexpected" benefit.
Revive backs it with a money-back guarantee specifically because results vary. If it doesn't work for you, you get a refund. That removes the financial risk of evaluating it on your own nights out.