What Is DHM? The Complete Guide to Dihydromyricetin

DHM is in nearly half of all hangover supplements sold in America, yet most people taking it couldn’t tell you where it comes from, how researchers think it works, or why the number on the label matters more than the brand on the front. This is the plain-English version: what the evidence does show, and what it doesn’t.

These statements have not been evaluated by the Food and Drug Administration or Health Canada. This product is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before use.

What Is DHM (Dihydromyricetin)?

Dihydromyricetin is a flavonoid — a class of plant-based polyphenol compounds that includes quercetin, resveratrol, and thousands of other bioactive molecules found in fruits, vegetables, and medicinal plants. DHM is extracted primarily from Hovenia dulcis, a tree native to East Asia commonly called the Oriental Raisin Tree or Japanese Raisin Tree. It also occurs in Ampelopsis grossedentata, a vine long used in Chinese herbal traditions.

The plant has a long history of use. Traditional East Asian medicine documented Hovenia dulcis as a remedy associated with “alcohol toxicity” and liver support going back centuries. The dried fruit peduncles — the fleshy, sweet stems around the fruit — were brewed into teas and tonics long before modern chemistry isolated the active compound. This is interesting historical context, not proof that the compound does anything in particular.

DHM itself was isolated and characterized by mid-20th-century chemists, but broader Western scientific interest only picked up in the 2010s, after a UCLA study examined its effects on GABA receptors in rodents. That study is the most-cited starting point for the modern research literature.

Quick facts:

Chemical class: Flavanonol (a dihydroflavonol)
Source plant: Hovenia dulcis (primary); Ampelopsis grossedentata (secondary)
Most-studied targets: GABA-A receptors; the alcohol-metabolizing enzymes ADH and ALDH
Category: Dietary supplement (US, under DSHEA); Natural Health Product (Canada, NHP)

How Researchers Think DHM Works

DHM has been studied as a multi-target compound. Most of the research clusters around two areas of biology. It’s worth being clear up front: a lot of this work is in cell cultures and rodents, and the human evidence is thinner than the popularity of the supplement might suggest.

1. The GABA-A Receptor Pathway

Alcohol’s main short-term effect in the brain is potentiating GABA-A receptors — the same broad receptor system that sedatives act on. That’s associated with the relaxed, disinhibited feeling that comes with drinking.

When alcohol clears the system, GABA-A activity rebounds the other way: receptors become temporarily hyper-sensitized, which is associated with the anxiety, restlessness, and mental agitation people call “hangxiety.” This is a predictable neurochemical rebound, not a character flaw.

In the foundational 2012 UCLA study published in the Journal of Neuroscience, DHM-treated rodents showed reduced signs of alcohol intoxication and faster behavioral recovery than controls, and the authors attributed this to effects at GABA-A receptors. It’s an animal study — informative about the mechanism researchers point to, not a demonstration of what a supplement does in people.

2. The Alcohol Metabolism Pathway (ADH/ALDH)

Your liver processes alcohol in two enzymatic steps:

Alcohol dehydrogenase (ADH) converts ethanol into acetaldehyde.
Aldehyde dehydrogenase (ALDH) converts acetaldehyde into acetate, which the body clears.

Acetaldehyde, the intermediate, is considerably more reactive than ethanol itself and is associated with flushing, nausea, and general misery during heavy drinking. This two-step metabolism is your body’s own process — it happens whether or not you take anything.

Some studies report that DHM may influence the activity of these alcohol-metabolizing enzymes (ADH and ALDH), but much of that work is preclinical and the human evidence is limited. It’s more accurate to say researchers have proposed this as a mechanism than to say DHM “speeds up” or “accelerates” anything — the data don’t support stating that as established fact.

What DHM Is Studied For

Liver Function

The most common positioning for DHM is around liver health, because the liver is the main site of alcohol metabolism. Research has examined DHM in the context of oxidative stress and inflammation associated with alcohol exposure, much of it in animal models. The human clinical evidence on liver outcomes is early and limited (see the Research section below).

In supplement terms, the conservative, supportable framing is “supports healthy liver function” — not that any product reverses or treats a liver condition.

Post-Celebration / Morning-After Use

DHM is the headline ingredient in a large share of “morning wellness” and “post-celebration” products in the US and Canada. Brands like Cheers and No Days Wasted build around DHM; so does Hovenia. The reason it shows up so often is that the two most-studied mechanisms — the GABA rebound and the enzyme pathway — both relate to drinking biology, so a single compound is appealing to formulators.

The doses used in research are generally well above the ~300 mg found in many budget products. That’s a factual dose comparison, covered next — not a claim that more milligrams produce a better outcome.

DHM Research: What the Evidence Does and Doesn’t Show

The literature on DHM has grown over the last decade, but it’s uneven: strong on mechanism in animals, thinner on rigorous human trials. Two anchors are worth knowing.

The 2012 UCLA GABA Study (Journal of Neuroscience)

The most-cited DHM paper. In rodents, DHM affected GABA-A receptor activity and reduced behavioral signs of alcohol intoxication. It’s the origin of most modern interest in DHM — and it’s an animal study, so it tells you about a plausible mechanism, not about human results.

Liver Disease Research

Smaller and longer human trials have begun to look at DHM in people with metabolic-associated fatty liver conditions, sometimes alongside other nutrients like vitamins C and E. Early reports have described changes in liver-enzyme markers, but these are single, small studies in specific patient populations, often combining DHM with other ingredients — they are not evidence that any supplement treats liver disease, and they shouldn’t be read that way. We’re deliberately not citing specific unverified figures here. If you want the careful version, see our neutral write-up of the DHM liver-disease research.

The 2025 Category Analysis (Sage Journals, 2025)

A systematic analysis of US hangover-supplement products found DHM to be the most common specialty ingredient in the category — present in about 47.6% of products surveyed. That’s a useful fact about the market: DHM is the category-defining ingredient. It says nothing about efficacy; it just reflects what formulators are putting in bottles.

DHM Dosage: Why the Number on the Label Matters

Dosing is where the DHM market quietly varies the most.

The research range. Studies have used DHM doses spanning roughly 300–1,200 mg. Many budget products land near the bottom of that range (around 300 mg), while higher-dose products sit nearer the top. Stating this is a dose comparison — not a claim that a higher dose works better.

What budget products tend to contain. Several large retail DHM products are formulated around 300–400 mg per serving. They aren’t “wrong,” but they sit at the low end of the doses used in the research.

Dose range	What the label is giving you
300–400 mg	The low end of the studied range; common in budget products
500–700 mg	A mid-range serving
1,000–1,200 mg	The upper end of the doses used in much of the research; common in premium products

Hovenia provides 1,000 mg of DHM per serving (two capsules) — the upper end of the studied range, as a single ingredient. For timing, daily-use, and “before vs after drinking” questions, see the DHM dosage guide and when to take DHM.

DHM Safety Profile

DHM has been used traditionally for a long time and studied in several human trials, and the safety signals so far are reassuring — with the usual caveats about limited long-term human data.

Tolerability. Human studies have not reported significant adverse effects at the doses tested. As with any supplement, individual responses vary.

Drug interactions. Research suggests DHM may influence enzyme systems (such as CYP3A4) and transporters (such as P-glycoprotein) involved in drug metabolism, so it could in principle interact with some medications. If you take prescription drugs, talk to your healthcare provider before adding DHM.

Pregnancy and breastfeeding. There isn’t enough human data. Not recommended during pregnancy or breastfeeding.

Daily use. DHM appears well-tolerated in the studies done to date. See can you take DHM every day? and the full side-effects write-up.

Always consult a healthcare professional before starting any supplement, particularly if you have a diagnosed condition or take prescription medications.

How DHM Products Differ

Most DHM products fall into two camps:

Multi-ingredient blends — DHM combined with other actives (for example L-Cysteine, milk thistle, prickly pear, B-vitamins, or electrolytes). Cheers and No Days Wasted are blends of this kind.
Single-ingredient DHM — one studied compound at a full dose, nothing else. This is Hovenia’s approach.

Neither approach is inherently “better” — they’re different bets. A blend stacks several ingredients in one capsule; a single-ingredient product keeps the label simple and lets you see exactly what you’re taking and at what dose. On a per-equal-dose basis, single-ingredient DHM also tends to cost less: Hovenia is about $1.00 per serving at 1,000 mg DHM, versus roughly $2.92 (Cheers) and $3.13 (No Days Wasted) per serving for the blends. Those are price facts, not efficacy claims.

For head-to-head detail, see the DHM brand comparisons and Hovenia vs Cheers.

Explore the Full DHM Guide

This page is the hub for everything DHM on the Hovenia site. Dig into any section:

How DHM Works

DHM Research

DHM Dosage

DHM Uses

Frequently Asked Questions

What does DHM stand for? DHM stands for dihydromyricetin, the flavonoid compound extracted primarily from Hovenia dulcis (the Oriental Raisin Tree).

Is DHM the same as dihydromyricetin? Yes — DHM and dihydromyricetin are the same compound. DHM is just the abbreviation used on labels and in popular coverage.

How much DHM should I take? Research has used doses across roughly 300–1,200 mg. Many budget products sit near 300 mg; premium products are often around 1,000–1,200 mg. Hovenia provides 1,000 mg per serving (two capsules). See the dosage guide for timing and daily-use guidance.

Is DHM safe to take daily? The human studies done so far haven’t reported significant adverse effects, and DHM appears well-tolerated. Long-term human data is still limited. Consult a healthcare provider if you take prescription medications. More detail in can you take DHM every day?.

Does DHM help with hangover anxiety (hangxiety)? The GABA-A rebound after drinking is well-documented, and DHM’s activity at GABA-A receptors is one of the most-studied parts of the compound — mostly in animal models. That’s a plausible mechanism researchers point to, not a guaranteed result in people. See the hangxiety explainer.

Is DHM legal in Canada? DHM is regulated as a Natural Health Product (NHP) under Health Canada’s Natural Health Products Regulations, and a product needs a Natural Product Number (NPN) before it can be sold in Canada. Hovenia’s NPN application is in progress.

What’s the difference between cheap and expensive DHM supplements? Mostly dose and ingredient list. Budget products often contain 300–400 mg DHM; premium products contain more, and some add other ingredients in a blend. Hovenia takes the single-ingredient route — 1,000 mg of DHM and nothing else — at about $1.00 per serving. See the DHM supplement comparison.

Reviewed for accuracy against the cited primary literature. Hovenia is a liver-health supplement company; our product supports healthy liver function and is not intended to diagnose, treat, cure, or prevent any disease. This statement has not been evaluated by the FDA or Health Canada.

The brand behind this: Hovenia is single-ingredient pure DHM — 1,000 mg per serving (two capsules), about $1/serving, for the nights you drink. Join the waitlist → · See the product →