Guide
When is the best time to take hops?
No trial has directly compared morning and evening dosing for hops. Appetite trials dosed it before meals or during a fast; the two sleep-focused trials dosed it daily without publishing a specific time, so the timing that matters more than clock time is relative to food or bedtime, depending on why it's being taken.
No trial has directly compared taking hops in the morning against the evening. What the research shows instead is that timing was set by the reason hops was being tested — before a meal for appetite trials, partway through a fast, or on a fixed daily schedule for sleep trials — not chosen to test one clock time against another.
Appetite trials: timed to a meal, not a clock
The clearest human timing data comes from appetite research. A 2022 trial gave 19 men a single 500 mg dose of a concentrated bitter hop extract roughly 30 to 60 minutes before a scheduled lunch, specifically to measure its effect on that meal (PMID 35102364). Two other trials — one in women, one in men — dosed a bitter hop extract twice during a 24-hour fast, at the 16-hour and 20-hour marks, and found reduced hunger and cravings from that point onward (PMID 39071168, PMID 31766216). In all three, the timing was built around the meal or fasting window being studied, not a general recommendation for what time of day to take hops.
Sleep trials: daily dosing, time not published
The two trials most relevant to hops and sleep dosed it once or twice a day over several weeks, but neither published what time of day the doses were taken. A 2010 trial gave adults with chronic insomnia two capsules of a hops-plus-fish-oil supplement daily for a month without specifying a time, and found no sleep benefit over placebo regardless (PMID 20569455). A 2025 trial of a valerian-hops combination extract, dosed daily over 21 days, found a modest increase in nightly sleep duration, again without stating a specific time in the published abstract (PMID 40462685). If you're using a hops or valerian-hops product for sleep, taking it consistently, at whatever time the product's own label directs, is more supported by what's actually published than a specific "take it X hours before bed" instruction, which none of this research provides.
With or without food
None of the trials we reviewed tested hops with versus without food as its own variable outside of the appetite research above, where taking it before a meal was the entire point of the study. If a hops product upsets your stomach on an empty stomach, taking it with food is a reasonable adjustment.
How fast does it seem to work
The appetite trials measured an effect within hours of dosing — reduced hunger or food intake at the very next meal or later the same day. The sleep trials measured cumulative effects over weeks, not a same-night response. There's no research establishing a specific onset time for hops taken on its own for relaxation or sleep.
Questions people ask
When should I take hops?
It depends on why. Appetite research dosed it shortly before a meal or partway through a fast. Sleep-focused products were dosed daily over weeks in the trials that tested them, without a published time of day — following a specific product's own label directions is the most supported approach available.
How fast does hops work?
For appetite, within hours in the trials that measured it. For sleep, the positive trial measured change over 21 days of daily use, not a single night, so there's no basis for expecting a same-night effect.
Should hops be taken with or without food?
No trial tested that question directly outside of the appetite research, which specifically timed hop extract around meals. If it causes stomach discomfort on an empty stomach, taking it with food is a reasonable, low-risk adjustment.
Related reading: how much hops should you take a day?, hops benefits: what the research does and doesn't show, and hops side effects.
Sources
- An extract of hops (Humulus lupulus L.) modulates gut peptide hormone secretion and reduces energy intake in healthy-weight men: a randomized, crossover clinical trial A 2022 randomized crossover trial found a single 500 mg dose of a bitter hop extract reduced how much food 19 healthy-weight men ate at their next meal, alongside changes in appetite-related gut hormones, though it also caused more gastrointestinal discomfort than placebo and didn't change how hungry people said they felt.
- Gastrointestinal delivery of bitter hop extract reduces appetite and food cravings in healthy adult women undergoing acute fasting A 2024 randomized crossover trial found a bitter hop extract, taken twice during a 24-hour fast, reduced appetite and food cravings in 30 women at both a 125 mg and 250 mg dose, with a few reports of loose stools or heartburn, mostly at the higher dose.
- New Zealand Bitter Hops Extract Reduces Hunger During a 24 h Water Only Fast A 2019 randomized trial found a bitter hop extract reduced hunger ratings by more than 10% during a 24-hour fast in 30 men, at both a 100 mg and 250 mg dose, and blunted the usual midday hunger spike seen with placebo.
- A dietary supplement to improve the quality of sleep: a randomized placebo controlled trial A 2010 randomized, placebo-controlled trial found a hops-and-fish-oil supplement produced no significant improvement in sleep quality, sleep efficiency or melatonin levels over placebo in adults with moderate-to-severe chronic insomnia.
- Effects of a Valerian-Hops Extract Combination (Ze 91019) on Sleep Duration and Daytime Cognitive and Psychological Parameters in Occasional Insomnia: A Randomized Controlled Feasibility Trial A 2025 randomized, placebo-controlled trial of a combined valerian-and-hops extract (not hops alone) found a modest increase in nightly sleep duration in 40 adults with occasional sleep problems, with no effect on daytime cognitive or mood measures.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.