Every spring, the same conversation happens at vet clinics and dog parks across the country: tick season is here. And while most pet owners are focused on repellents and regular tick checks, there’s a less-discussed side of tick season worth understanding — what happens to your dog’s immune system when a tick bites, and how herbal support may help your pet stay resilient all season long. Bor-L-Immune® from Sustenance Herbs was formulated specifically for this window of elevated immune demand, and the herbs inside it have a long history of use in immune-supportive protocols.
Why Tick Season Is Hard on Your Dog’s Immune System
More Than a Bug Bite
A tick bite isn’t just a minor skin irritation. When a tick attaches, it introduces saliva into the bloodstream — saliva that contains compounds designed to suppress the host’s local immune response, prevent blood clotting, and keep feeding undetected. This immune suppression at the bite site is how ticks succeed as parasites. For your dog, it means the immune system is simultaneously managing a wound response, a foreign substance exposure, and in some cases, potential pathogens that ticks can carry.
Repeated exposures across a tick season can place a cumulative burden on immune organs — particularly the spleen, thymus, and lymph nodes — and on white blood cell populations that patrol for pathogens in the bloodstream. This is the biological context behind why a formula like Bor-L-Immune® was designed for daily use during tick season rather than as an occasional spot treatment.
The Organs Under Pressure
Three immune organs take the heaviest load during tick season: the spleen (which filters blood and activates immune cells), the thymus (which matures T-cells, including CD-4 cells critical for orchestrating immune responses), and the liver (which clears inflammatory byproducts). Supporting these organs nutritionally and herbally during high-exposure periods is a foundational principle of preventive integrative veterinary care.
The Herbs Inside Bor-L-Immune® — and Why They Were Chosen
Bor-L-Immune® contains a proprietary blend of six herbs: Japanese Knotweed (certified organic), Cat’s Claw (wildcrafted), Astragalus (certified organic), Cryptolepis (certified organic), Andrographis (wildcrafted), and Neem (certified organic). Each brings a distinct and complementary profile of immune-supportive activity.
Japanese Knotweed and Cryptolepis
Japanese Knotweed (Polygonum cuspidatum) has attracted significant research attention in integrative medicine circles, largely due to its content of resveratrol and related stilbene compounds. These have demonstrated antioxidant, anti-inflammatory, and antimicrobial properties in laboratory studies. In traditional use and modern integrative protocols, Japanese Knotweed is one of the most frequently referenced botanicals for immune support during tick season — and it’s the herb from which Bor-L-Immune® takes part of its name (the “B” referencing Borrelia-season awareness).
Cryptolepis (Cryptolepis sanguinolenta) is a West African shrub root with a history of traditional medicinal use that has caught the attention of researchers for its broad-spectrum antimicrobial activity. Its main alkaloid, cryptolepine, has been studied for antibacterial, antifungal, and antiparasitic properties. As a newer addition to the Bor-L-Immune® formula — the product description specifically notes it was “now enhanced with Cryptolepis” — it adds an additional layer of immune support that complements the existing botanical blend.
Cat’s Claw and Andrographis
Cat’s Claw (Uncaria tomentosa), responsibly wildcrafted from Peruvian rainforest, is best known for its oxindole alkaloid content. Research suggests these alkaloids may modulate immune function by influencing the activity of T-helper cells and macrophages. It has been used for centuries in South American traditional medicine for conditions involving inflammation and immune challenge, and it’s become a staple in natural tick-season protocols for pets and humans alike.
Andrographis (Andrographis paniculata) is an Ayurvedic herb traditionally called “King of Bitters” — a reference to its intensely bitter taste and its reputation as one of the most powerful immune-activating herbs in the Asian materia medica. Andrographolide, its primary active compound, has been studied for its effects on white blood cell activity and inflammatory signaling. Some research suggests it may support a balanced Th1/Th2 immune response — exactly the kind of immune calibration that matters during sustained tick season exposure.
Astragalus and Neem
Astragalus (Astragalus membranaceus), certified organic, is one of the most extensively researched adaptogenic immune tonics in traditional Chinese medicine. Where many herbs are used acutely, astragalus is classically used as a long-term tonic — taken daily throughout high-risk seasons to build immune resilience over time. Research suggests astragalus polysaccharides may enhance the activity of natural killer cells, macrophages, and T-lymphocytes. It also supports the thymus, the gland responsible for maturing T-cells, including the CD-4 white blood cells highlighted in Bor-L-Immune®’s key benefits.
Neem (Azadirachta indica), certified organic, rounds out the formula with its broad-spectrum properties. Neem has been used in Ayurvedic medicine for millennia and contains dozens of biologically active compounds including nimbin, nimbidin, and azadirachtin. Research has documented antifungal, antibacterial, and antiparasitic activity, as well as immunomodulatory effects. In the context of tick season support, neem adds a complementary layer of protection and immune reinforcement.
How Bor-L-Immune® Supports the Full Immune Picture
What distinguishes Bor-L-Immune® from a generic immune supplement is that it was designed with the specific demands of tick season in mind — not just general wellness. The formula targets multiple dimensions of immune function simultaneously:
- Immune balance (Th1 & Th2 response): Several herbs in the blend, including andrographis and astragalus, have been studied for their ability to support balanced Th1/Th2 immune function rather than pushing the immune system in one direction.
- White blood cell support: The formula specifically lists enhancement of CD-4 white blood cell activity as a key benefit. CD-4 T-helper cells are central coordinators of adaptive immune responses.
- Organ protection: Liver, spleen, and thymus function are explicitly supported — the three immune-relevant organs most taxed during tick season.
- Heart muscle protection: This benefit reflects the formula’s broader protective scope — relevant because tick-borne pathogens can sometimes affect cardiovascular tissue in dogs.
The formula is non-GMO, made with certified organic and responsibly wildcrafted herbs, and is appropriate for both dogs and horses. Find it at sustenanceherbs.com/products/bor-l-immune.
How to Use Bor-L-Immune® During Tick Season
Bor-L-Immune® is designed for daily use throughout tick season — not as a one-time treatment. This reflects the nature of the herbs it contains: adaptogens like astragalus and immune tonics like andrographis work cumulatively, building their effects over weeks of consistent use. Starting 1–2 weeks before peak tick season in your region gives the formula time to establish baseline immune support before exposure is highest.
It’s also worth noting that Bor-L-Immune® is designed as a complement to your existing tick prevention strategy — not a replacement for it. Regular tick checks after outdoor time, appropriate habitat management, and a conversation with your vet about the tick-borne disease risk in your specific region all remain important.
Frequently Asked Questions
Can Bor-L-Immune® be used alongside tick preventatives?
Yes. Bor-L-Immune® is an herbal immune support formula, not a tick repellent or pesticide, so it does not interact with topical or oral tick preventatives. It can be used as a complementary support while your dog is on any conventional tick prevention protocol. Always discuss new supplements with your veterinarian if your dog is on multiple medications.
When should I start giving Bor-L-Immune®?
For best results, start 1–2 weeks before peak tick season in your area and continue through the end of the season. In many parts of the US, this means beginning in early spring and continuing through late fall. The formula can also be used year-round in regions where ticks are active in winter.
Is Bor-L-Immune® safe for long-term use?
The herbs in Bor-L-Immune® have well-established safety profiles when used at appropriate doses. Astragalus and neem in particular have long histories of extended use as daily tonics. That said, some herbalists recommend seasonal cycling — using the formula during high-exposure months and taking breaks during low-risk periods. Consult your veterinarian about the approach that’s right for your specific dog.
Can cats take Bor-L-Immune®?
Bor-L-Immune® is formulated for dogs and horses. Cats have significantly different metabolic pathways and react differently to many botanical compounds, particularly those containing certain alkaloids. Do not give this formula to cats without explicit veterinary guidance.
How is Bor-L-Immune® different from a general immune supplement?
Most general pet immune supplements target broad immune wellness. Bor-L-Immune® was specifically formulated around the immune challenges that arise during tick season — using herbs with documented activity relevant to tick-associated immune stress, including herbs that have been studied in tick-borne illness recovery contexts in integrative human medicine. It’s a targeted formula, not a multivitamin.
Don’t Wait for a Bite to Think About Immune Support
Tick season doesn’t announce itself with a warning. One walk through tall grass, one afternoon in the backyard, and your dog could encounter dozens of ticks. The immune challenge that follows is real — and it’s compounded across weeks and months of outdoor activity.
If you want to support your dog’s immune resilience throughout the season, Bor-L-Immune® brings together six certified organic and wildcrafted herbs — Japanese Knotweed, Cat’s Claw, Astragalus, Cryptolepis, Andrographis, and Neem — in a formula designed specifically for this purpose. It’s non-GMO, handcrafted in small batches, and built for the dogs and horses that spend their seasons outdoors.
Always consult your veterinarian before starting any new supplement, especially if your dog has a known health condition or is on medications. This post is for educational purposes and does not constitute veterinary medical advice.
— Evan Morrell