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2025 Canadian Guide: 5 Clinically Backed Tear Stimulants and Artificial Tears for Dogs - Protect Your Pet's Vision with Optimmune, I-Drop Vet Plus, Remend, Systane Ultra, Viscotears

Published on Thursday, August 21, 2025

Products that either stimulate natural tear production or replace tear film components are essential for managing keratoconjunctivitis sicca (dry eye) and supporting corneal healing in dogs. This category covers prescription tear stimulants such as cyclosporine and tacrolimus formulations, plus advanced artificial tears that contain hyaluronate or carboxymethylcellulose for prolonged ocular surface lubrication. Canadian pet owners and veterinarians often choose between immunomodulatory stimulants and lubricating substitutes based on clinical severity, ease of administration, preservative status, dosing frequency, cost, and availability. Convenience and comfort for the animal, combined with proven efficacy and safety, make preservative-free and high-viscosity options especially appealing in the Canadian market where winter dryness, regional veterinary practice patterns, and pharmacy distribution influence purchasing decisions.

Quick Menu

1. Best Prescription Tear Stimulant

2. Best Preservative-Free Veterinary Lubricant

3. Best For Ongoing Dry-Eye Management

4. Best OTC Fast-Acting Relief

5. Best Long-Lasting Gel Substitute

1
BEST PRESCRIPTION TEAR STIMULANT

Optimmune Ophthalmic Ointment

Optimmune Ophthalmic Ointment

Optimmune is a prescription cyclosporine ophthalmic ointment that stands out as the tear-stimulant option on this list because it addresses underlying immune-mediated lacrimal dysfunction rather than only replacing tears. For canine keratoconjunctivitis sicca (KCS) it is often costlier up front than over-the-counter lubricants here, but its disease-modifying effect can reduce long‑term medication needs and visits compared with purely palliative drops or gels.

4.4
★★★★☆
  • Boosts tear production

  • Ointment longevity

  • Boosts tear production

  • Ointment longevity

Review Summary

88%

"Owners report consistent improvement in tear production and corneal health with long-term Optimmune use; it’s effective for KCS but can be costly and sometimes causes transient irritation."

  • Tail-wagging relief

  • Contains cyclosporine ophthalmic ointment that has been shown to stimulate tear production in dogs with keratoconjunctivitis sicca (KCS).

  • Tail-wagging relief

  • Contains cyclosporine ophthalmic ointment that has been shown to stimulate tear production in dogs with keratoconjunctivitis sicca (KCS).

Increased Safety & Security

Time-Saving Convenience

Optimmune is a prescription cyclosporine ophthalmic ointment that stands out as the tear-stimulant option on this list because it addresses underlying immune-mediated lacrimal dysfunction rather than only replacing tears. For canine keratoconjunctivitis sicca (KCS) it is often costlier up front than over-the-counter lubricants here, but its disease-modifying effect can reduce long‑term medication needs and visits compared with purely palliative drops or gels.

  • Boosts tear production

  • Ointment longevity

  • Tail-wagging relief

  • Contains cyclosporine ophthalmic ointment that has been shown to stimulate tear production in dogs with keratoconjunctivitis sicca (KCS).

  • Ointment base provides prolonged ocular contact time, often used once or twice daily as directed by a veterinarian.

  • Boosts tear production

  • Ointment longevity

  • Tail-wagging relief

  • Contains cyclosporine ophthalmic ointment that has been shown to stimulate tear production in dogs with keratoconjunctivitis sicca (KCS).

  • Ointment base provides prolonged ocular contact time, often used once or twice daily as directed by a veterinarian.

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$50-90 CAD

2
BEST PRESERVATIVE-FREE VETERINARY LUBRICANT

I-Drop Vet Plus

I-DROP
🏠 Local Product

I-Drop Vet Plus is a veterinary-formulated, preservative-free lubricating drop designed for frequent use in dogs; its single-use vials reduce preservative-related irritation and make it a strong economical choice for chronic, high-frequency dosing. Compared with Optimmune it does not stimulate tear production but offers a safer, low-cost option for ongoing lubrication with fewer toxicity concerns than some multi-dose products.

4.1
★★★★☆
  • Hyaluronic cushion

  • Quick soothing

  • Hyaluronic cushion

  • Quick soothing

Review Summary

82%

"Users find I-Drop Vet Plus a gentle, preservative-free tear substitute that provides reliable lubrication for chronic dry eye, though frequent dosing and small bottle size are common complaints."

  • Paw-approved slick

  • Sterile, preservative-free ophthalmic lubricant formulated for animals to reduce irritation and contamination risk with frequent use.

  • Paw-approved slick

  • Sterile, preservative-free ophthalmic lubricant formulated for animals to reduce irritation and contamination risk with frequent use.

Increased Safety & Security

Time-Saving Convenience

I-Drop Vet Plus is a veterinary-formulated, preservative-free lubricating drop designed for frequent use in dogs; its single-use vials reduce preservative-related irritation and make it a strong economical choice for chronic, high-frequency dosing. Compared with Optimmune it does not stimulate tear production but offers a safer, low-cost option for ongoing lubrication with fewer toxicity concerns than some multi-dose products.

  • Hyaluronic cushion

  • Quick soothing

  • Paw-approved slick

  • Sterile, preservative-free ophthalmic lubricant formulated for animals to reduce irritation and contamination risk with frequent use.

  • Designed to provide immediate lubrication and comfort as an adjunct to tear-stimulant therapy.

  • Hyaluronic cushion

  • Quick soothing

  • Paw-approved slick

  • Sterile, preservative-free ophthalmic lubricant formulated for animals to reduce irritation and contamination risk with frequent use.

  • Designed to provide immediate lubrication and comfort as an adjunct to tear-stimulant therapy.

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From 28.07$
3
BEST FOR ONGOING DRY-EYE MANAGEMENT

Remend Lubricating Eye Drops

Remend Lubricating Eye Drops

Remend provides a thicker, longer-retaining lubricating formulation intended to bridge the performance gap between drops and ointments, offering extended surface protection for dogs with moderate tear deficiency. Technically it delivers longer contact time than standard aqueous drops like I-Drop Vet Plus and is a lower-cost alternative to prescription immunomodulators like Optimmune for symptomatic management.

3.9
★★★☆☆
  • Long-lasting relief

  • Preservative-free formula

  • Long-lasting relief

  • Preservative-free formula

Review Summary

76%

"Many owners report Remend offers adequate, affordable short-term lubrication, but several users need more frequent applications and find it less long-lasting than gel formulations."

  • Snout-friendly calm

  • Formulated for symptomatic relief of chronic dry eye, helping to protect and hydrate the corneal surface.

  • Snout-friendly calm

  • Formulated for symptomatic relief of chronic dry eye, helping to protect and hydrate the corneal surface.

Increased Safety & Security

Time-Saving Convenience

Remend provides a thicker, longer-retaining lubricating formulation intended to bridge the performance gap between drops and ointments, offering extended surface protection for dogs with moderate tear deficiency. Technically it delivers longer contact time than standard aqueous drops like I-Drop Vet Plus and is a lower-cost alternative to prescription immunomodulators like Optimmune for symptomatic management.

  • Long-lasting relief

  • Preservative-free formula

  • Snout-friendly calm

  • Formulated for symptomatic relief of chronic dry eye, helping to protect and hydrate the corneal surface.

  • Supports reduced friction and promotes a more stable tear film when used regularly alongside tear stimulants.

  • Long-lasting relief

  • Preservative-free formula

  • Snout-friendly calm

  • Formulated for symptomatic relief of chronic dry eye, helping to protect and hydrate the corneal surface.

  • Supports reduced friction and promotes a more stable tear film when used regularly alongside tear stimulants.

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$25-40 CAD

4
BEST OTC FAST-ACTING RELIEF

Systane Ultra Lubricant Eye Drops

Systane

Systane Ultra uses a proprietary polymer technology to create a longer-lasting tear film substitute that is widely available and backed by large-scale clinical use; this makes it a market-leader in retention time among drops and a practical choice when improved comfort and lower dosing frequency are desired. While not veterinary‑specific like I-Drop Vet Plus, its advanced formulation often provides superior symptomatic relief compared with basic aqueous lubricants and at a mid-range price point versus prescription agents.

4.3
★★★★☆
  • Ultra hydration

  • Rapid comfort

  • Ultra hydration

  • Rapid comfort

Review Summary

86%

"Systane Ultra is frequently praised for rapid relief and relatively long-lasting comfort when used off-label in dogs, though some report initial stinging and note it’s a human product."

  • Blink-friendly bounce

  • Dual-action lubricant drops that provide fast symptomatic relief for moderate dry eye through demulcent ingredients.

  • Blink-friendly bounce

  • Dual-action lubricant drops that provide fast symptomatic relief for moderate dry eye through demulcent ingredients.

Increased Safety & Security

Time-Saving Convenience

Systane Ultra uses a proprietary polymer technology to create a longer-lasting tear film substitute that is widely available and backed by large-scale clinical use; this makes it a market-leader in retention time among drops and a practical choice when improved comfort and lower dosing frequency are desired. While not veterinary‑specific like I-Drop Vet Plus, its advanced formulation often provides superior symptomatic relief compared with basic aqueous lubricants and at a mid-range price point versus prescription agents.

  • Ultra hydration

  • Rapid comfort

  • Blink-friendly bounce

  • Dual-action lubricant drops that provide fast symptomatic relief for moderate dry eye through demulcent ingredients.

  • Widely available over the counter and inexpensive, making it useful for interim or adjunctive relief in dogs (veterinary approval recommended).

  • Ultra hydration

  • Rapid comfort

  • Blink-friendly bounce

  • Dual-action lubricant drops that provide fast symptomatic relief for moderate dry eye through demulcent ingredients.

  • Widely available over the counter and inexpensive, making it useful for interim or adjunctive relief in dogs (veterinary approval recommended).

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-11%16.99$
Suggested Price: 18.99$
5
BEST LONG-LASTING GEL SUBSTITUTE

Viscotears Liquid Gel

Viscotears Liquid Gel

Viscotears Liquid Gel is a high-viscosity, gel-forming product intended for sustained lubrication and is particularly useful for nighttime or severe dry-eye episodes in dogs, offering the longest residence time of the non-prescription options. Financially it is attractive for pet owners needing intermittent but powerful relief because a small dose achieves prolonged effect, though it does not stimulate tear production like Optimmune and can be blurring immediately after application compared with thinner drops.

4
★★★★☆
  • Gel coating

  • Overnight protection

  • Gel coating

  • Overnight protection

Review Summary

80%

"Viscotears Liquid Gel is liked for its long-lasting, overnight lubrication and reduced dosing frequency, but some users experience temporary blurriness and stickiness after application."

  • Snooze-safe comfort

  • Thicker liquid-gel formulation designed for prolonged ocular retention and good nighttime protection for dry eyes.

  • Snooze-safe comfort

  • Thicker liquid-gel formulation designed for prolonged ocular retention and good nighttime protection for dry eyes.

Increased Safety & Security

Time-Saving Convenience

Viscotears Liquid Gel is a high-viscosity, gel-forming product intended for sustained lubrication and is particularly useful for nighttime or severe dry-eye episodes in dogs, offering the longest residence time of the non-prescription options. Financially it is attractive for pet owners needing intermittent but powerful relief because a small dose achieves prolonged effect, though it does not stimulate tear production like Optimmune and can be blurring immediately after application compared with thinner drops.

  • Gel coating

  • Overnight protection

  • Snooze-safe comfort

  • Thicker liquid-gel formulation designed for prolonged ocular retention and good nighttime protection for dry eyes.

  • Provides extended lubrication for severe dryness, reducing the need for very frequent dosing during the day or overnight.

  • Gel coating

  • Overnight protection

  • Snooze-safe comfort

  • Thicker liquid-gel formulation designed for prolonged ocular retention and good nighttime protection for dry eyes.

  • Provides extended lubrication for severe dryness, reducing the need for very frequent dosing during the day or overnight.

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$18-30 CAD

What the Research Shows About Tear Stimulants and Artificial Tears for Dogs

Clinical and veterinary ophthalmology studies support the use of topical immunomodulators and modern artificial tear formulations to increase tear production, reduce ocular inflammation, and promote corneal healing. Research over the last two decades has compared cyclosporine and tacrolimus for immune-mediated dry eye, evaluated hyaluronate and carboxymethylcellulose for surface retention and comfort, and highlighted the benefits of preservative-free delivery for chronic use. Improvements are typically measured with Schirmer tear tests, corneal staining, and clinical signs such as reduced squinting and discharge.

Topical cyclosporine (commonly formulated in ophthalmic ointments) has been shown in peer-reviewed veterinary studies to increase tear production and reduce inflammation in many dogs with keratoconjunctivitis sicca, often with measurable improvement within 2 to 8 weeks.

Tacrolimus is an effective alternative for dogs that do not respond adequately to cyclosporine; randomized and controlled clinical reports show good efficacy but may require veterinary guidance for dosing and monitoring.

Hyaluronate-containing artificial tears improve ocular surface retention time and support corneal epithelial healing, making them useful as adjunctive therapy or for mild to moderate dry eye.

Carboxymethylcellulose formulations provide effective lubrication and symptom relief; choice between hyaluronate and CMC often depends on individual response and desired viscosity.

Preservative-free preparations reduce the risk of further ocular surface irritation with chronic use and are preferred for long-term management.

Combination therapy — an immunomodulator to restore tear production plus a lubricant to protect the cornea — is commonly recommended in moderate to severe cases and supported by clinical practice guidelines in veterinary ophthalmology.

In Canada, these five options offer a practical spectrum for managing canine dry eye: Optimmune Ophthalmic Ointment, I-Drop Vet Plus, Remend Lubricating Eye Drops, Systane Ultra Lubricant Eye Drops, and Viscotears Liquid Gel. Optimmune Ophthalmic Ointment is widely regarded by Canadian veterinarians as a first-line tear stimulant because of its strong clinical track record for increasing tear production, while the other products provide valuable lubricating and symptomatic support depending on severity and owner preference. We hope you found what you were looking for; if you want to refine or expand your search across formulations, dosing, availability in Canada, or prescription requirements, use the search to narrow results or explore related guides.

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