Boswellia

Boswellia is the gum resin of Boswellia serrata, the Indian frankincense tree, tapped from the bark much as rubber is. Its activity comes from a family of boswellic acids, of which the most studied is acetyl-11-keto-beta-boswellic acid, usually abbreviated AKBA. It has a long history in Ayurvedic medicine and a growing place in veterinary joint supplements.

Why the Mechanism Matters

Most anti-inflammatory drugs used in dogs — carprofen, meloxicam, firocoxib — work by inhibiting cyclooxygenase, the COX enzymes, which reduces prostaglandin production. That works well and carries the familiar risks: gastrointestinal ulceration, and effects on kidney and liver.

Boswellic acids inhibit a different enzyme: 5-lipoxygenase, or 5-LOX, which sits on the other branch of the arachidonic acid cascade and produces leukotrienes rather than prostaglandins. That is genuinely a different target, and it has two practical consequences. First, boswellia does not carry the same COX-related gastric risk profile that NSAIDs do — in fact, unlike NSAIDs it is not associated with reducing the stomach's protective prostaglandins. Second, because the pathways are separate, the two are potentially complementary rather than redundant.

We are careful with that second point. "Potentially complementary" is a mechanistic argument, not a licence to combine an herbal with a prescription anti-inflammatory without telling your vet.

What the Canine Study Found

Boswellia has something most herbal joint ingredients lack: a published study in dogs. An open multicentre trial gave a Boswellia serrata resin extract to dogs with chronic joint and spinal disease at 400 mg per 10 kg of body weight daily for six weeks. A majority of the dogs showed a statistically significant reduction in signs — lameness, stiffness after rest, and local pain — with improvement often noted from around two weeks.

The honest caveats: it was open-label with no placebo group, the assessments were owner and veterinarian reported rather than force-plate measured, and the numbers were modest. Placebo and caregiver-placebo effects are large in canine orthopaedic studies, which is exactly why placebo controls matter. So: real canine data, encouraging, not definitive.

Human osteoarthritis trials of standardised AKBA-enriched extracts have reported benefit on pain and function, which adds supporting weight without being canine evidence.

For context on where this sits among joint supplements, the 2022 systematic review discussed in our krill oil entry found the strongest analgesic evidence for omega-3 supplements and, to a lesser degree, cannabidiol, while concluding that glucosamine and chondroitin should no longer be recommended for canine and feline osteoarthritis. Boswellia was not among the ingredients with that level of appraisal. Anyone selling you a joint supplement should be willing to tell you where their ingredient actually sits.

Boswellia in Combination Joint Supplements

Most boswellia a dog actually eats comes inside a multi-ingredient joint chew rather than on its own, usually alongside collagen, turmeric, MSM or green-lipped mussel. The research reflects that.

A 2023 scoping review in Animals of undenatured type II collagen and Boswellia serrata for canine osteoarthritis found ten canine studies involving boswellia — one testing it alone, nine combining it with other ingredients. No serious adverse effects were reported, with gastrointestinal upset noted in two studies. The reviewers said the mixed products make it hard to say what boswellia contributes by itself.

The strongest single piece of work is a 2024 randomised, double-blind, placebo-controlled crossover trial in 17 dogs with mild to moderate osteoarthritis. A supplement of undenatured type II collagen plus boswellia improved mobility over eight weeks, with a difference already visible at four weeks. That is a better design than the original open study, and it is placebo controlled — but it tests the pair, not boswellia alone.

• What it means for you: a combination chew is a reasonable way to give boswellia, but check that the label states the boswellia amount per chew so you can compare it against the table below.

• Watch the overlap: if you are also giving turmeric or another anti-inflammatory product separately, tell your vet everything the dog is getting.

How Much to Give

Body weight · Boswellia resin extract daily

• Cat or dog under 10 lbs — 150 to 200 mg

• 10 to 25 lbs — 200 to 450 mg

• 26 to 50 lbs — 450 to 900 mg

• 51 to 80 lbs — 900 to 1,400 mg

• Over 80 lbs — 1,400 to 1,800 mg

• Horse — 10 to 20 grams

The canine figure comes straight from the study: 400 mg per 10 kg daily. If you are using a standardised AKBA-enriched extract, follow its label instead — those products are dosed lower because the active fraction is concentrated, and applying a whole-resin guideline to a concentrate overshoots.

How to Give It

Give it with a fatty meal. Boswellic acids are lipophilic and poorly absorbed on their own, and absorption improves substantially in the presence of dietary fat. This is not a minor optimisation — it is the difference between a working dose and a wasted one. A capsule opened onto food with some oil in it, or given alongside a hemp oil serving, is the practical approach.

Split the daily amount across two meals. Judge it over four to six weeks, matching the study duration, and take note of your starting point — a short video of your dog rising from lying down and walking away is far more useful at week six than your memory of how bad things were.

Dogs, Cats and Horses

Cats are given boswellia much less often and there is no feline study. Cats have limited glucuronidation capacity, an important route for clearing plant compounds, so dose conservatively and keep it vet-directed. See cat safety.

Horses are given boswellia widely for joint support at ten to twenty grams daily, generally on clinical impression rather than controlled equine data. Two practical notes. Boswellia is also used for equine inflammatory airway conditions on the same leukotriene rationale, since leukotrienes are central to airway inflammation — an interesting mechanistic fit with limited evidence behind it. And check current prohibited substance lists with your governing body before feeding any supplement to a competing horse; rules change and being plant-derived has no bearing on whether something is permitted. Our equine research covers what we have studied.

What to Look For When Buying

• Named species — Boswellia serrata — since other Boswellia species differ in composition.

• A standardised boswellic acid percentage, and ideally the AKBA figure, since AKBA is the most active fraction and total boswellic acid content does not tell you how much of it there is.

• Resin extract rather than plain ground bark or gum.

• Formulated with a lipid or phospholipid carrier if available, which addresses the absorption problem directly.

• Third-party testing and a date. Same standard as our own lab results — a label that will not quantify the active is a label you cannot dose from.

Side Effects and Cautions

• Digestive upset — mild nausea, loose stool, occasionally reflux. Usually manageable by giving it with food and reducing the amount.

• NSAIDs. The pathways differ, which is an argument for compatibility rather than a guarantee of it. Any dog on a prescription anti-inflammatory should have every supplement disclosed to the vet, and stacking anti-inflammatory agents without supervision is not a good idea.

• Pregnancy and lactation. Boswellia carries a traditional caution in pregnancy and the safety data is absent. Avoid it.

• Drug metabolism. Boswellic acids interact with drug-metabolising enzymes and transporters, so blood levels of other medications can shift. This matters in animals on multiple drugs.

• Surgery. Disclose it beforehand, as with any anti-inflammatory agent.

• It does not replace a diagnosis. A dog that has become stiff, reluctant on stairs or slow to rise needs an examination — cruciate disease, hip or elbow dysplasia, intervertebral disc disease, immune-mediated polyarthritis and bone tumours all present as "he's slowing down".

Blood Thinners, Missed Doses and Storage

One caution most pet pages leave out: VCA Animal Hospitals’ boswellia monograph lists a slight decrease in blood clotting as a possible effect. It advises against giving boswellia with aspirin, heparin, warfarin or any drug that affects platelet function or clotting, and says to use caution in pregnant or breeding animals.

• On a blood thinner or a clotting disorder? Do not add boswellia without your vet’s approval. The same goes if you already give fish oil, which also affects platelets.

• Missed a dose? Give it when you remember, unless the next dose is nearly due. Then skip it and carry on. Never double up.

• How long it lasts: VCA notes the effects should wear off within about 24 hours of stopping. That can take longer in animals with liver or kidney disease.

• Storage: room temperature, away from sunlight, in a tightly sealed container out of reach of pets.

When to Talk to Your Veterinarian

Before starting, if your animal is on an NSAID, a steroid, or any long-term medication. Urgently for sudden non-weight-bearing lameness, a hot swollen joint, neurological signs such as dragging a foot or incoordination, or reluctance to move combined with fever — those are not joint-supplement situations. Any animal with chronic joint disease should have a proper pain management plan, and supplements sit inside that plan rather than substituting for it.

How It Fits With Hemp

This is the most mechanistically interesting pairing in this whole set of entries, and it is worth being precise about why. Boswellia inhibits 5-LOX and reduces leukotrienes. Cannabinoids act on the endocannabinoid system, an entirely separate signalling network. NSAIDs inhibit COX. Three different mechanisms, three different points in the inflammatory picture — which is the rationale for layering rather than replacing.

The practical synergy is simpler still: boswellic acids need dietary fat to absorb, and a hemp oil serving is dietary fat. Giving them together in the same meal genuinely improves boswellia's absorption, which is the sort of thing worth knowing.

What we will not tell you is that the combination has been studied, because it has not. Our own 90-day trial with Colorado State University looked at hemp alone in dogs with osteoarthritis, and 30 of 32 completing dogs improved — an open-label pilot with no placebo group, and we say so every time. Our joint and mobility page and clinical trials page set out the detail, the study protocols page compares all five canine trials, and our serving guide has the amounts by weight.

Frequently Asked Questions

Does boswellia work for dogs with joint pain? An open-label study in dogs with chronic joint and spinal disease found significant reduction in lameness and stiffness at 400 mg per 10 kg daily over six weeks. It had no placebo group, so treat it as encouraging rather than proven.

How much boswellia should I give my dog? 400 mg of resin extract per 10 kg of body weight daily, which is roughly 900 mg for a 50 lb dog, split across two meals. Standardised AKBA-enriched products are dosed lower — follow their label.

Is boswellia the same as turmeric? No. Both are anti-inflammatory botanicals but they act differently — boswellia inhibits 5-LOX and leukotrienes, while curcumin works on several targets including NF-kB. They are often combined. See our turmeric entry.

Can boswellia be given with NSAIDs? They act on different pathways, which is an argument for compatibility, but do not combine anti-inflammatory agents without telling your vet.

Why does boswellia need to be given with food? Boswellic acids are fat-soluble and poorly absorbed alone. Dietary fat substantially improves absorption, so give it with a fatty meal.

How long before I see a difference? Some improvement was reported from around two weeks in the canine study, with the full assessment at six weeks. Give it at least four to six weeks and record a baseline video.

The canine work is Reichling and colleagues on Boswellia serrata resin in dogs with chronic joint and spinal disease, in the Schweizer Archiv fur Tierheilkunde. For how canine osteoarthritis pain is assessed and managed, the World Small Animal Veterinary Association publishes global pain management guidelines.

Can I give my dog a human boswellia supplement?

Only with your vet’s input. Human products vary widely in strength, and many are concentrated AKBA extracts or blends with other herbs, so the canine resin dose does not transfer directly. Read every ingredient and avoid anything flavoured or sweetened with xylitol, which is toxic to dogs.

What should I do if my dog eats too much boswellia?

Most overdoses cause stomach upset such as vomiting or diarrhoea. Call your vet or an animal poison control line, especially if the product also contained other ingredients or xylitol.

Does boswellia thin the blood?

VCA lists a slight decrease in blood clotting as a possible side effect and advises against combining it with aspirin, heparin, warfarin or other drugs that affect clotting. Stop it before surgery and tell your vet.