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VETERINARY TEAM REFERENCE · SUPPLEMENT

Ursolic acid (URSOLYX)

A muscle-support supplement marketed by Virbac as URSOLYX. The manufacturer offers dog and cat soft-chew products and describes support for muscle function in aging, active or recuperating patients.

Ursolic-acid muscle-support supplementProduct-specific clinical reference

Updated October 16, 2026 · Sources and review status below

For veterinarians and veterinary staff. Product-label information is distinct from extra-label clinical practice. This is not a complete prescribing formulary or an automated interaction screen. Verify the current label, exact formulation, patient and species-specific clinical reference before use. Independent veterinary/pharmacy review remains pending.

Prescribing overview

URSOLYX is marketed for muscle support in aging, active or recuperating dogs and cats. Species-specific soft chews are distinct.

Key prescribing checks

  • Evaluate the cause of weakness or muscle loss before relying on supplementation.
  • Review the complete ingredient panel, other products and patient dietary requirements with the clinician.
  • Use within a monitored nutrition and mobility plan; improvement in exercise participation does not by itself show that an underlying disease has resolved.

Uses by species

Approval and evidence apply to the named product, species, route and indication. An extra-label use requires its own prescribing assessment; a human indication is not an animal approval.

Dogs

Supplement; no approved-drug regimen established

Manufacturer-marketed muscle function/strength support

Supportive use does not diagnose or treat every cause of muscle loss.

Use / indication source ↗

Cats

Supplement; no approved-drug regimen established

Manufacturer-marketed muscle function/strength support

Feline formulation and instructions require separate checking.

Use / indication source ↗

Pharmacology & pharmacokinetics

Mechanism and clinical role

Virbac describes a plant-derived pentacyclic triterpene targeting skeletal-muscle mRNA expression; these are manufacturer mechanism/support claims.

Absorption, distribution, metabolism and elimination

Manufacturer reports a proprietary coating improving canine bioavailability fourfold; no quantitative feline elimination profile is established on the reviewed pages.

SAFETY REFERENCE · PRODUCT & SPECIES SPECIFIC

Contraindications & cautions

Contraindications identify circumstances where the source says a product should not be used. Precautions call for assessment or monitoring. Interactions identify combinations to review. They are distinct categories; this summary does not replace a full interaction check or the current product label.

Supplement safety information may be limited. A missing contraindication list does not establish safety in every species, during pregnancy, or with other treatments.

URSOLYX Soft Chews for Dogs

Canine soft chews; Dogs

Contraindications · when not to use

A formal contraindication list is not established in the reviewed source for this scope. This does not establish safety; confirm the exact product and full labeling.

Precautions & monitoring

  • Manufacturer pages do not supply a comprehensive contraindication or interaction profile. Limited study observations do not establish safety in every patient, pregnancy or drug combination.

URSOLYX Soft Chews for Cats

Feline supplement soft chews

Contraindications · when not to use

A formal contraindication list is not established in the reviewed source for this scope. This does not establish safety; confirm the exact product and full labeling.

Precautions & monitoring

  • Feline presentation is distinct. Manufacturer page lacks comprehensive contraindication and interaction information; review complete package ingredients and patient history.

Supplement safety-data gap: unlisted restrictions do not mean none or safe.

Safety sources checked: . Selected label information; independent veterinary or veterinary-pharmacy review remains pending. A label for dogs, cats, horses or humans does not establish safety for another species.

Adverse effects

Manufacturer short-term tolerance observations do not establish a comprehensive adverse-effect, pregnancy-safety or interaction profile.

These are selected source-reported effects, not incidence estimates or an exhaustive list. Spontaneous postmarketing reports do not by themselves establish frequency or causality.

Dosing & administration

Verify the source before prescribing. The regimens below summarize selected veterinary product labels, not every accepted veterinary use. They are not automatic substitutions between brands or formulations. Renal/hepatic disease, concurrent therapy, age, indication and clinical response can require a different plan.

No approved veterinary drug-dose regimen is established here for this supplement. Manufacturer serving directions are not equivalent to an evidence-based treatment protocol.

No approved-drug regimen is presented. Manufacturer feline instructions describe one chew daily; confirm the exact cat package. Follow the current dog weight-specific package, not feline instructions.

Extra-label prescribing and food-animal residue requirements are separate from labeled regimens. FDA extra-label-use guidance ↗

Drug & supplement interactions

This is a selected interaction reference, not an automated or comprehensive combination checker. Reconcile prescription drugs, nonprescription products, supplements and recent treatment changes.

A product-specific interaction summary has not been established here. An empty list must not be interpreted as “no interactions.” Review the full source and a species-appropriate clinical reference.

Monitoring

Assess underlying disease, nutrition, muscle condition and objective mobility over time.

Client counseling

This is not ursodiol. Review all ingredients and concurrent supplements with the veterinarian.

This section supports the veterinary team's discharge discussion; it does not replace the product’s Client Information Sheet where one is required.

Storage & handling

Follow the species-specific package storage directions and secure the chew container against overconsumption.

Brands, formulations & ingredient identity

Active ingredients

Ursolic acid

Other searchable names: Ursolyx · sage extract

URSOLYX contains ursolic acid; it is not ursodiol, the bile-acid medication.

Dog and cat presentations are distinct. Verify the species-specific package rather than assuming identical ingredients, concentration or instructions.

The manufacturer’s research and marketing claims concern these formulations and do not establish equivalence with arbitrary ursolic-acid supplements.

Shared ingredients do not establish interchangeable concentrations, routes, release properties, species labeling or regional availability.

URSOLYX Soft Chews for Dogs

Formulation
Canine soft chews
Label / product scope
Dogs

Manufacturer muscle-support product; distinct from the feline presentation.

Product label / source ↗

URSOLYX Soft Chews for Cats

Formulation
Feline soft chews
Label / product scope
Cats

Confirm cat-specific formulation and package.

Product label / source ↗

References & review status

Clinical reference updated October 16, 2026. Independent veterinary or veterinary-pharmacy review not yet completed. Evidence gaps remain explicitly identified; this page does not claim equivalence to a comprehensive, professionally reviewed veterinary formulary.

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