LMNT did $206M selling salt water. The pet version is coming.

In 2020, a small electrolyte company run by a paleo diet author and a handful of co-founders did $7M in revenue selling flavored salt packets through podcasts.

Three years later, that company, LMNT, hit $206M in revenue on roughly $6M in total capital raised.

It was profitable from year one.

It had no retail distribution. No celebrity spokesperson. No venture capital war chest.

Just a powder stick pack with 1,000mg of sodium, 200mg of potassium, 60mg of magnesium, zero sugar, and an army of podcast hosts who genuinely used the product and told millions of listeners about it.

LMNT did not invent electrolyte supplementation.

Gatorade has been around since 1965. But LMNT, along with Liquid I.V. and a wave of DTC challengers, rewrote what the category could be.

They stripped out the sugar. They replaced the plastic bottle with a stick pack that costs 40% less to produce, requires no refrigeration, ships in an envelope, and lasts two years on a shelf.

They stopped marketing to athletes and started marketing to anyone who wanted to feel better on a Tuesday morning. And the category responded.

The global electrolyte drinks market is now worth $35 to $40B depending on how you draw the lines, growing at nearly 7% annually.

The U.S. electrolyte powder segment alone hit $2.78B in 2024.

That transformation took roughly five years.

And if you are paying attention to what is happening in pet supplements right now, you can see the early contours of the same story starting to form.

The human electrolyte boom was not one moment.

It was a sequence that accelerated through the late 2010s, when brands like LMNT, Cure Hydration, and Hydrant launched purpose-built for the keto and low-carb community that needed daily high-sodium supplementation.

COVID accelerated wellness purchasing across every category.

And the podcast-influencer ecosystem gave electrolyte supplementation scientific legitimacy for non-athletes.

That last point deserves emphasis.

Andrew Huberman dedicated full episodes to salt and sodium on the Huberman Lab podcast, which lists LMNT as a current sponsor.

LMNT's SEC filing shows the company sponsored 8,696 episodes across 398 podcasts and spent $54.6M on marketing in 2023 alone, including $7.1M specifically on sampling.

The free 8-pack program, where customers pay only shipping, converts trial into subscription.

Cohorts repurchase five to six times per year, recovering acquisition cost by the second order.

The brand is now opening its first physical storefront in Big Sky, Montana, called the "Salt House," a wellness-themed space with a self-serve salt bar, interactive exhibits on the science of salt, and library-style workspaces.

CEO James Murphy said Big Sky already has "the highest per-capita LMNT usage in the country."

That is the kind of sentence that tells you a brand has crossed from product into identity.

Kevin Espiritu, the founder of Epic Gardening and one of the more successful DTC content-commerce operators in the country, put it simply on X last month: "I don't understand how so many electrolyte companies are making 9 figs/yr that I've never heard of."

The category is fragmenting so fast that even people who build DTC brands for a living can't keep track.

Liquid I.V. took a different path. Unilever acquired the brand in 2020 as a roughly $120M business.

Under Unilever, it has quadrupled to "nearly $1B" in revenue.

Coca-Cola paid $5.6B for BodyArmor.

Nestlé bought Nuun.

Gen Z is now treating electrolytes as a morning ritual, with TikTok searches for "hydration" growing 363.8% year-over-year through mid-2025.

This is no longer a niche. It is a lifestyle category.

None of this has been without friction.

The category is moving so fast that even founders who build DTC brands for a living cannot keep track. (The brand has also faced growing pains typical of rapid scale, including a 2025 lawsuit over labeling claims.)

The global pet supplement market reached approximately $2.76B in 2025, growing at 6.9% CAGR.

The U.S. alone accounts for $1.13B, projected to reach $2B by 2033.

Fifty-three percent of dog owners now give their pets supplements, up 56% over six years according to APPA.

And here is the number that matters most for understanding why the human electrolyte boom will eventually reach pet — 65% of dog supplement buyers also take supplements themselves, per Packaged Facts.

The number is even higher for cat owners at 72%.

The transfer mechanism is not theoretical. It is the documented engine of category growth.

Hip and joint supplements built the template.

The subcategory commands 21 to 31% of total pet supplement revenue, making it the single largest functional segment.

The consumer education curve was powered by a visible problem.

Twenty percent of adult dogs suffer from joint disease. The American Animal Hospital Association puts the number at 80% for senior dogs.

Nutramax's Cosequin established vet-channel credibility, then Zesty Paws disrupted the category through Amazon-first distribution and treat-format soft chews.

The brand grew from $3M to the number one online pet supplement before H&H Group acquired it for $610M in October 2021, on 2020 revenue of $73.1M.

That is roughly 8.4x revenue at a 62%+ growth CAGR.

Gut health is following the same trajectory.

Digestive health supplements are the fastest-growing functional segment at 11.8% CAGR through 2031 per Mordor Intelligence.

APPA's 2024 survey shows 21% of dog owners now give prebiotic or probiotic supplements, up from 17% in 2022.

Calming and anxiety supplements surged from 4% usage in 2018 to 15%, a 275% increase, riding the same adaptogen wave that built brands like Olly and Moon Juice in the human space.

The M&A activity confirms the category is real.

Beyond the Zesty Paws exit, Swedencare acquired NaturVet for $447.5 million in 2022, and General Mills bought Fera Pets through its Gold Medal Ventures fund in 2023.

The capital is following the consumer.

Here is where the story gets interesting for operators and investors.

Despite everything happening in human hydration and despite the proven transfer mechanism from human supplements to pet supplements, no major player has launched a dog-specific hydration product.

Read that again.

Purina Pro Plan Veterinary Supplements sells Hydra Care for cats. It uses nutritional osmolytes and is clinically shown to increase total fluid intake by 50%.

There is no canine equivalent.

Not from Purina. Not from Mars. Not from Hill's. Not from Royal Canin, which launched a comprehensive supplement line in May 2025 covering seven categories and skipped hydration entirely.

Elanco's Pet Protect covers seven categories. No hydration. (NOTE: If I’ve missed a hydration specific product from these players, please let me know.)

That gap is simultaneously the bull case and the bear case.

Either the biggest companies in pet have not yet seen sufficient demand to justify entry, or the biggest companies in pet are leaving white space for founders to build a category before they eventually acquire the winners.

Based on how CPG consolidation has played out in both human hydration and pet supplements, the historical pattern suggests the latter.

A handful of brands are already running the play.

Brutus Bone Broth, founded in 2017 by sisters Kim Hehir and Sue Delegan, is the closest thing to a category leader.

The company claims the number one dog food topper position per Nielsen data and is available in over 15,000 stores including Petco, PetSmart, Walmart, and Target.

Their product line spans liquid broth, powder on-the-go sticks, Mega Packs, frozen Brothcicles, and a subscription box launched in March 2025.

Hydration is a core benefit but not the primary positioning.

Brutus leads with joint health (glucosamine and chondroitin fortification) and mealtime enrichment.

Think of them as the Gatorade of pet hydration: broad, established, with hydration as one benefit among many.

LYX Hydration is the purest LMNT analog.

Founded by Dylan Jones, an Air Force veteran who researched military working dog hydration, LYX sells flavored electrolyte powder stick packs in chicken and beef flavors, primarily through Amazon and DTC.

The company is very early-stage. Jones has described the awareness gap bluntly: "The awareness of pet hydration, it's kind of scary because it's not very well-known."

He has said he wants LYX to become "the Kleenex of dog hydration."

The company mirrors LMNT's sampling strategy with a free sample and free shipping offer.

Pawer Water, founded by Nathalie Ohana and based in the UK, takes a multi-functional approach with soluble powder sticks across three lines (mobility, calming, gut health), each combining electrolytes with functional ingredients.

Distribution is UK-focused through Pets Corner, Pets At Home, and Amazon UK.

Beyond those three, at least a dozen smaller brands occupy niche positions in clinical recovery, working dog performance, and RTD isotonic formats.

None have achieved mainstream retail distribution at anything close to Brutus's scale.

On the ingredient supplier side, IFF launched Betafin Pet, a betaine-based osmolyte that helps cells maintain fluid balance without electrolyte loading.

When ingredient suppliers start making dedicated pet bets, it signals category-level conviction.

The veterinary profession has not yet weighed in meaningfully on dog-specific hydration products because the category barely exists.

What vets have weighed in on is whether pet parents should give their dogs human electrolyte products like Pedialyte or Gatorade.

The answer is generally no.

Those products are formulated for human sodium and sugar ratios, and some contain sweeteners that are toxic to dogs.

But that is a warning about giving dogs a human product. It is not a verdict on whether dog-specific hydration formulations have value.

Dogs pant rather than sweat, which means they lose mostly water during thermoregulation, not the sodium and potassium that humans shed through perspiration.

For a healthy dog on a balanced diet with access to fresh water, there is no established clinical need for daily electrolyte supplementation.

But that is not every dog in every situation.

Working and military dogs under prolonged exertion. Senior dogs with reduced thirst drive.

Dogs recovering from illness.

Brachycephalic breeds that overheat easily.

And the more than 70% of dogs eating dry kibble, which contains roughly 10% moisture versus 75% in wet food.

These are the use cases where the veterinary door is open, and where brands like Petralyte (formulated by veterinarian Dr. Sara Ochoa) are already positioning with clinical credibility.

The real challenge is not vet resistance.

It is that the need is invisible.

Every successful pet supplement category was built on a problem a pet parent could observe.

Limping dogs drove hip and joint. Digestive distress drove probiotics. Behavioral issues drove calming.

Dehydration is invisible until it is already a medical event, detectable only at 5% or greater fluid loss.

The winning positioning is probably not "your dog needs electrolytes."

The better frame is "help your dog drink more water."

Or target the sub-populations where the need is visible and vet-endorsable, where the conversation shifts from "does my healthy dog need this" to "my aging Bulldog in Austin in July clearly does."

The honest assessment is that pet hydration is a pre-category market. It sits at roughly 2015 or 2016 on the human electrolyte timeline.

The evidence is clear. LYX explicitly describes itself as creating "a brand new product category."

No dominant player exists.

No market research firm publishes a dedicated pet hydration report. No major VC-backed pet hydration startup has reached meaningful scale.

The category education burden falls entirely on founders, not consumers.

But signals of approaching inflection are accumulating. Multiple new entrants launched in 2024 and 2025. IFF invested at the ingredient level.

GPE 2026 flagged functional hydration as a top trend. And 48% of Millennials, the largest pet-owning cohort, give their pets supplements versus 24% of Boomers.

If pet hydration follows the hip-and-joint adoption trajectory, a $200 to $500M global subcategory by 2030 is plausible.

Hip and joint captures 21 to 31% of the pet supplement market.

If hydration reaches even 5 to 10%, that is $135 to $480M.

A simpler bottom-up estimate using 69M U.S. dog-owning households at 5% penetration and $30 average annual spend yields roughly $103M in U.S. revenue alone.

For comparison, the human electrolyte powder market went from near-zero in 2015 to $2.78B in the U.S. by 2024.

The 2 to 4 year window for independent brands to establish category leadership appears to be open.

The top five pet food companies hold 54% market share and could enter at any time. But they historically fast-follow rather than create categories, waiting for DTC brands to prove demand before acquiring or copying.

If the pattern holds, and Zesty Paws's $610M exit at 8.4x revenue is the benchmark, the acquisition path is the exit thesis, not the risk.

The pet hydration opportunity is not guaranteed.

It requires creating demand, not just capturing it.

The consumer education challenge is fundamentally different from hip and joint, where every pet parent can see their dog limping.

Nobody looks at their dog and thinks "you seem dehydrated today."

But the infrastructure is in place.

The stick-pack powder format that made LMNT a $206M business on $6M in funding is directly transferable.

The DTC-first, subscription-driven model is proven.

The humanization transfer mechanism that built a $610M exit for Zesty Paws is documented and measurable.

The major players have left a dog-shaped gap in their hydration lineups. And the ingredient suppliers are already investing.

The brands that win this category will not just copy the LMNT playbook.

They will adapt it for a consumer who cannot tell you they are thirsty.

That is a harder problem.

But in an industry that figured out how to sell $30 monthly probiotic subscriptions for animals that have been eating dirt for thousands of years, it is not an impossible one.