Ultimate H2 mixed berry box beside a glass of water and fresh berries
$49.95
Sale Price

Ultimate H2 Review: Is It Worth It?

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GUNDRY MD

Ultimate H2 is a fizzing hydrogen tablet from Gundry MD that you drop into a glass of water. Each Mixed Berry tablet combines a 400 mg magnesium-based H2MG React blend, which releases molecular hydrogen, with 75 mg of citicoline and 100 mcg of vitamin B12. It is an easy daily habit with no caffeine, but the evidence for hydrogen water is still early and plainer tablets deliver hydrogen for less.

Best for
  • People who want an easy daily hydrogen water habit
  • Anyone who prefers a caffeine-free morning drink with added B12
  • Buyers who want to try it with a 90-day money-back guarantee
Consider alternatives if
  • You want the most hydrogen for your money: some plain tablets claim a higher concentration for less
  • You want a dedicated focus or memory supplement
  • You already take magnesium: each tablet adds 80 mg
See Today's Price →Opens the brand's official site
Price/Serving
$1.67
30

Pros & Cons

Convinced by the benefits?

See current pricing and bundle options

Where Can You Buy Ultimate H2?

Ultimate H2 is sold directly through Gundry MD’s official website. Third-party Amazon listings for Gundry MD’s hydrogen tablets also exist, sometimes under slightly different product names, so double-check the listing before buying there. We could not confirm current QVC availability. Because retail listings and pricing can change, the Gundry MD website remains the most reliable place to check.

OptionOne-Time PriceSubscribe & Save
Single Box$49.95$44.95
3-Box Bundle$134.85$119.85
6-Box Bundle$254.70$227.70

Prices reflect Gundry MD’s current checkout pages at the time this review was last updated and are subject to change. See the Bundle Savings section below for the full per-box breakdown and guarantee details.

Check Current Price →

Is Ultimate H2 Worth It?

Based on the ingredients, pricing, and evidence covered in this review, here’s a straightforward look at who Ultimate H2 is likely to suit and who might want to look elsewhere.

Ultimate H2 may be worth it if you:

  • Want a simple, caffeine-free daily habit that combines molecular hydrogen with a small B12 and citicoline boost in one tablet.
  • Prefer buying from an established supplement brand backed by a 90-day money-back guarantee.
  • Are comfortable paying a premium for convenience and formula breadth rather than chasing the lowest cost per serving.
  • See the citicoline and B12 as a modest addition rather than relying on them alone for a dramatic cognitive or energy effect.

Ultimate H2 may not be worth it if you:

  • Are specifically looking for the highest hydrogen concentration per tablet; some competitors claim a higher ppm at a lower price.
  • Want a dedicated focus or memory supplement; citicoline is a small part of this formula.
  • Are working with a tight supplement budget, since simpler single-ingredient hydrogen tablets cost less per serving.
  • Expect strong, clinically proven benefits specific to this exact formula rather than general molecular hydrogen research.

Bottom line: Ultimate H2’s main appeal is convenience and formulation breadth, combining molecular hydrogen with B12 and citicoline in one tablet, rather than proven superiority over simpler or cheaper hydrogen products. It’s a reasonable pick for someone who wants that combination from an established brand, but not the only credible way to add molecular hydrogen to a daily routine.

What It Is & Why It Matters

Ultimate H2 is Gundry MD’s molecular hydrogen supplement, an effervescent tablet built around a magnesium-based H2MG React blend that releases hydrogen gas when dropped in water, plus small doses of citicoline and vitamin B12. Molecular hydrogen has been investigated for potential biological effects, including antioxidant and anti-inflammatory activity, but human evidence remains limited and developing. That evidence relates to molecular hydrogen generally, not to Ultimate H2 specifically, no independent human studies on this product have been published, and it should not be treated as proof that Ultimate H2 itself produces the same outcomes. Gundry MD adds the citicoline and B12 to round the formula out toward energy and mental clarity rather than hydration alone.

Key Ingredients

H2MG React™ Proprietary Blend

400 mg

Non-ionic elemental magnesium with DL-malic acid and tartaric acid. It reacts with water to release molecular hydrogen gas. The panel lists 80 mg of magnesium per tablet.

Limited evidence · early human research on hydrogen water

Citicoline (as citicoline monosodium salt)

75 mg

A source of choline that brain cells use, included for focus and mental energy.

Moderate evidence · small human trials

Vitamin B12 (as methylcobalamin)

100 mcg

Supports red blood cell formation and energy metabolism. The label lists 4,167% of the Daily Value; the body absorbs only a fraction of a large single dose.

Strong evidence · for correcting a deficiency

Amounts from the Ultimate H2 Supplement Facts panel (1 dissolvable tablet; 30 tablets per box). Other ingredients: dextrose, citric acid, natural flavours.

Ultimate H2 Supplement Facts label showing Vitamin B12, magnesium, and H2MG React blend amounts

90-day money-back guarantee • Affiliate link • Checkout on Gundry MD’s site

Check current pricing, bundles and availability

Taste & Mixability

Ultimate H2 comes in a Mixed Berry flavour. It fizzes for about two minutes with a mild, slightly tart taste from the malic and tartaric acid, then dissolves fully. No caffeine or artificial sweeteners.

How to Use

Drop one tablet into 10 oz of water. It will fizz for about two minutes while the molecular hydrogen releases, then drink once the fizzing stops. Gundry MD’s label recommends 1–2 tablets daily.

Safety & Side Effects

Gundry MD’s label recommends 1–2 tablets daily, each dissolved in water; there’s no established benefit to exceeding the labelled serving, and doing so would also push magnesium and B12 intake beyond what’s been evaluated. The magnesium in each tablet (roughly 80 mg) is a relatively modest amount of magnesium for most healthy adults, but anyone with kidney issues or taking magnesium-affecting medication should check with a doctor first. As with any supplement, people who are pregnant, nursing, on medication, or managing a health condition should talk to a healthcare professional before starting Ultimate H2.

Regulatory & safety historyChecked 28 Sep 2026
We found no FDA recalls, FDA warning letters or FTC actions involving Ultimate H2 or Gundry MD.
FDA recalls
None found
FDA warning letters
None found
FTC actions
None found
Allergens
None listed on the label
Magnesium
80 mg per tablet. Check with a doctor first if you have kidney problems or take medication affected by magnesium.
Side effects
A minority of users report mild digestive upset when starting out.
Manufacturing
Gundry MD says it is made in a cGMP facility and third-party tested. We have not seen the test results.

Searched: FDA recalls, FDA warning letters and FTC cases.

Pricing & Value

Ultimate H2

$69.95

Per Serving
$1.67

Only $1.67 per serving at the one-box price, less than a daily coffee.

Total Servings
30

Ultimate H2’s single-box price works out to about $1.67 per serving, similar to other premium hydrogen tablets like Vital Reaction and pricier than budget options such as Drink HRW’s 30-count tablets. Bundles and subscriptions bring it down to $1.27 per serving.

Protected by Gundry MD’s 90-day money-back guarantee.

Bundle Savings

Choose your bundle and pricing option

1 Box
$49.95

$1.67 per day

3 Boxes
$134.85

$1.50 per day

6 Boxes
$254.70

$1.42 per day

1 Box
$44.95

$1.50 per day

3 Boxes
$119.85

$1.33 per day

6 Boxes
$227.70

$1.27 per day

How Ultimate H2 Compares

Here's how Ultimate H2 stacks up against two other molecular hydrogen tablets on the market.
ProductOur ratingPriceBest forAction
Ultimate H2This review4/5$49.9530 tabletsA caffeine-free hydrogen tablet with added B12 and citicolineCheck Price →
Drink HRW Rejuvenation4/5$26.9930 tabletsHigher claimed hydrogen (up to 12.4 ppm) for less, but no B12 or citicolineNot yet reviewed
Vital Reaction3.5/5$59.5060 tabletsA simpler hydrogen tablet taken once or twice a dayNot yet reviewed

Alternatives to Consider

Drink HRW Rejuvenation

$26.99 for 30 tablets. Higher claimed hydrogen concentration (up to 12.4 ppm per 500 mL) and a lower price, but no added B12 or citicoline.

Vital Reaction

$59.50 for 60 tablets, taken once or twice a day. A simpler hydrogen tablet (8 to 10 ppm claimed) without the B12 or citicoline.

Dr. Mercola's H2

$49.97 for 90 tablets ($19.97 for 30). A budget option with a lower claimed hydrogen concentration (up to 8 ppm).

For anyone wanting an easy, caffeine-free way to add molecular hydrogen (plus B12 and a little citicoline) to their daily water, Ultimate H2 is a solid pick backed by Gundry MD's 90-day guarantee. Don't expect it to double as a dedicated focus supplement, and hydrogen-focused buyers on a budget may get more ppm per dollar elsewhere.

Frequently Asked Questions

How long does the fizzing take, and when should I drink it?
About two minutes. Once the fizzing stops, the hydrogen release is complete, so it's best to drink it right away rather than let it sit.
Yes, most people take it first thing in the morning on an empty stomach, though it can be taken with food too.
It is caffeine-free with no artificial sweeteners. The tablet contains a little dextrose as an ingredient, but the Supplement Facts panel declares no sugar per tablet.
Yes. Dropping the tablet in water triggers a reaction in the H2MG React blend that releases molecular hydrogen gas into the water, which is then consumed by drinking it.
Gundry MD states Ultimate H2 produces up to 8 ppm of molecular hydrogen per tablet. That figure comes from the manufacturer and hasn't been independently verified by FitnesSupps.
Gundry MD's label recommends 1–2 tablets daily, each dissolved in about 10 oz of water.
It depends on what you're after. See our "Is Ultimate H2 Worth It?" section above for the full breakdown — in short, it's a reasonable pick for convenience and formulation breadth, less so if you're chasing the highest hydrogen ppm per dollar.
See our "How Ultimate H2 Compares" section above. Competitors like Drink HRW Rejuvenation claim a higher ppm concentration at a lower price but don't include the added B12 or citicoline.
Ultimate H2 is sold directly through Gundry MD's official website. Third-party Amazon listings for Gundry MD's hydrogen tablets exist too, sometimes under a different product name, so check the listing carefully. We couldn't confirm current QVC availability, so the official Gundry MD site is the most reliable place to buy.
Yes. The H2MG React blend supplies roughly 80 mg of magnesium per tablet as part of the reaction that produces the hydrogen gas.
Legal Disclaimer

This review includes affiliate links. We may receive a commission if you purchase through them at no extra cost to you. Always consult your healthcare provider before beginning any supplement.

Comparing daily wellness options? See our full Vitamins & Daily Wellness guide.

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