What the research actually says.

Most dog supplement brands start with a marketing brief and reverse-engineer a formula to fit it. We do the opposite. Before an ingredient gets near a chew, it has to clear four gates.

1. Clinical evidence in dogs. Not mice, not humans, not 'mechanistically plausible.' If the ingredient hasn't been tested in dogs at a dose we can reasonably reach in a daily chew, it doesn't make the cut. Mechanistic studies are interesting but they don't sell us.

2. Dose response. A study showing benefit at 2g/kg is meaningless if a 30-pound dog would need to eat 14 chews to get the dose. We work backwards from a realistic daily serving and only ship ingredients we can dose effectively.

3. Safety profile. Long-term safety data, ideally over 90 days. No hidden interactions with common medications. Acceptable to dogs with sensitive stomachs.

4. Palatability. If a dog won't eat it, the dose doesn't matter. Every formulation goes through a tasting panel with real dogs (Theo is on the panel) before it goes to production.

Ingredients that pass all four gates make the formula. Ingredients that pass three out of four get parked, not stretched.

Our Daily Probiotic uses five strains chosen for documented benefit in dogs at the doses we ship. Each strain ID is on the label.

Bacillus coagulans GBI-30, 6086. A spore-forming strain that survives stomach acid without enteric coating. The Kalman 2009 trial showed improved stool quality and reduced GI symptoms at 2 billion CFU/day in mammals; the primary mechanism is gut barrier integrity and competitive exclusion of pathogens.

Bifidobacterium animalis subsp. lactis BB-12. One of the most-studied probiotic strains across species. Eskesen 2015 demonstrated normalization of stool consistency and reduced GI discomfort. Survives gastric transit and adheres to the intestinal mucosa.

Lactobacillus acidophilus LA-5. Saggioro 2004 documented pathogen exclusion and competitive inhibition of harmful bacteria in the gut lumen. LA-5 is among the most clinically validated acidophilus strains for GI flora support across species.

Lactobacillus plantarum 299v. Nobaek 2000 documented short-chain fatty acid production and reduced bloating — the fermentation of indigestible fibers produces butyrate, which feeds colonocytes and supports the intestinal barrier.

Lactobacillus rhamnosus GG. Hatakka 2001 demonstrated immune modulation and reduced incidence of GI infections. One of the most extensively studied probiotic strains; canine data supports use in stress-related GI flares (travel, boarding, antibiotic recovery).

We ship 5 billion total CFU per chew, guaranteed through end-of-shelf-life — not just at the time of manufacture. That distinction matters: many competitor labels list CFU at manufacture, which can be 40-60% higher than what reaches your dog 18 months later.

Hip + Joint pulls together five actives with the strongest canine data for mobility, cartilage support, and inflammation modulation.

Glucosamine HCl (500mg). McNamara 2017 reviewed the evidence for glucosamine in canine osteoarthritis and found consistent improvement in mobility scores at therapeutic doses. HCl form, not sulfate — better bioavailability per milligram.

Chondroitin sulfate (400mg). Comblain 2017 demonstrated reduced cartilage breakdown markers and improved gait analysis scores when combined with glucosamine. The two work together; we ship them together.

MSM (300mg). McCarthy 2007 reported improved owner-assessed pain scores in dogs with mild-to-moderate osteoarthritis at 50-100mg/kg. Useful adjunct, not a standalone fix.

Green-lipped mussel (150mg). Bui and Bierer 2003 published the foundational canine work showing reduced joint pain and improved range of motion at 450mg/day in arthritic dogs. We use freeze-dried whole-organism, which preserves the omega-3 profile that does the work.

Turmeric extract (50mg, standardized to 95% curcuminoids). Hielm-Björkman 2009 documented improvement in chronic osteoarthritis pain scores at meaningful curcuminoid doses. Bioavailability is the limit; we pair it with black pepper extract to lift absorption.

Doses are per chew. Two chews per day for a 50-pound dog. Adjust by weight per the label.

Calm is the newest formula and the one where we hold the line hardest on claims. Anxiety research in dogs is younger than the gut and joint literature, so we lead with the ingredients that actually have canine data and we tell you plainly which ones don't yet.

L-theanine / Suntheanine (100mg). This is the anchor, and the reason Calm exists. Araujo 2010 ran a controlled trial of L-theanine in dogs and found reduced fear and anxiety-related behavior — without sedation. L-theanine promotes the alpha-wave activity associated with calm focus rather than drowsiness. It has the most direct canine evidence of any calming ingredient, which is why it's the largest dose in the chew.

[Bacillus coagulans GBI-30, 6086](/ingredients/bacillus-coagulans) (1 billion CFU). The gut-brain piece — the same digestive strain we ship in the Daily Probiotic, included here on gut-brain rationale rather than its own anxiety data. To be precise: McGowan 2018 found that a different probiotic, Bifidobacterium longum BL999 (not B. coagulans), reduced anxious behaviors in dogs over a six-week trial. We include B. coagulans for its documented GI benefit and the gut-calm link; the L-theanine carries the behavioral evidence.

[Ashwagandha](/ingredients/ashwagandha) root (50mg). An adaptogen with strong human stress-response data and a long traditional-use record; direct canine trial data is still emerging. We dose it conservatively and we'll say it straight: this one rides on mechanistic and cross-species evidence, not a canine RCT. The L-theanine is doing the heavy lifting regardless.

Organic [chamomile](/ingredients/chamomile) (100mg). A traditional calming herb — gentle, with a long safety record. A supporting actor, not the lead.

What's deliberately not in Calm: no melatonin, no sedatives, no CBD. We wanted calm without sedation — a dog that's still themselves, just less wound up.

Every article on PawBite is written to be read line-by-line by a licensed veterinarian before it publishes. We're pre-launch, so that veterinary review layer is still being finalized — until a real vet signs, each article instead cites its sources by author and year, and says "veterinary review pending" rather than claiming a review that hasn't happened.

The draft. An editorial writer drafts the piece using only peer-reviewed sources, vet guidelines (AAHA, WSAVA), and primary research. Every numeric claim has a citation.

The review. A reviewing vet reads the full draft. Anything that's oversimplified, unsupported, or out of step with current standard of care gets flagged. Comments are inline. If a claim can't be defended, it gets cut. If a claim is borderline, we add the caveat.

The republish. When new research lands or guidelines shift, we update the page, re-review, and re-stamp. The publish date and last-review date are both on every article.

This is slow, expensive, and produces fewer articles than it would otherwise. We think it's the only honest way to do health content.

Most of what's wrong with the dog supplement category is the gap between what brands say and what the research supports. We try to live inside that gap.

If a study only ran in mice, we say so. If the effect size was small, we say so. If the dose used in the study is higher than what we ship, we say so. If we changed our mind — added a strain, removed an ingredient, lowered a dose — we update the page and put the date on it.

We will never tell you that our chews 'support immune health' as a hedge. Either we have evidence for a specific effect at a specific dose, or we don't claim it.