immune support
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Curious about the benefits of St. John’s wort for pets, and how you can use it as a part of their wellness routine?
This herb has been used for many centuries in herbalism. Today, pet parents turn to it to help their furkiddos cope with immune support and irritated skin – always alongside veterinary guidance.
Before you add St. John’s wort to your pet’s wellness routine, here’s what you should know about how it works, why holistic practitioners value it, and how to use it safely.
St. John’s wort is an herb known for its bright yellow flowers. It thrives in sunny fields and meadows, and has been used in herbal traditions across Europe and North America.

Its name comes from its traditional harvest time – around St. John’s Day. But what makes it truly special are the natural compounds inside the plant. This includes hypericin and hyperforin, which give it its bright pigmentation and beneficial properties.
For pets, St. John’s wort is most valued in topical and internal herbal formulas designed to support the nervous system, promote emotional balance, and help soothe the skin.
Many people use St. John’s Wort as an herbal support for mild depression, though the mechanisms as an anti-depressant are net yet full understood.
For pets, this herb has several potential uses due to its natural compounds, hypericin and hyperforin.
Researchers have found that hyperforin has anti-bacterial activity. Additionally, a study on hypericin suggested that it has anti-virus effects, and may also help
Some research suggests that St. John’s Wort extract also contains natural anti-inflammatory compounds.
For pets, St. John’s Wort may make a suitable herbal ally in cases of viral and bacterial infections. It may also help pets who have inflammation as a result of their condition. With its potential to improve mood, it may help them feel their best if they are dealing with chronic or incurable viral conditions, like FIV or FHV, as well as bacterial conditions, such as kennel cough.

St. John’s Wort is non-toxic to pets. Like any herbal supplement, be sure to only give a safe amount. Don’t give your pets any supplement or herb dosed for humans, as this amount can be too much. Always choose a supplement that is made for pets.
Pets that are breastfeeding or pregnant should not take supplements without your vet’s permission, as their needs are different.
It is always a good idea to consult your veterinarian before making changes to your pet’s routine, including adding supplements. No supplement can replace veterinarian care.
NHV has two supplements that contain St. John’s Wort.
NHV Felimm may aid pets with infections and stimulate the body’s natural immune response thanks to herbs like St. John’s Wort, Asian Ginseng, and Oregon Grape. Felimm has helped many pets’ wellness journeys, from infections chronic or minor, as well as immune-related issues like allergies in cats.
For bacterial and viral issues on the skin, we developed NHV Heal Care. This soothing salve contains ingredients like St. John’s Wort and arnica. While it shouldn’t be used on open wounds, it’s a great multi-purpose support that may help pets with everything from sore muscles to burns, bruises, sores.
Every pet is unique, and herbs work best when tailored to your little one’s specific needs. If you’d like guidance on whether St. John’s wort is right for your pet, just open the chat box below – our NHV Pet Experts are here to help!
Remember, the dosage and quality of the herbal ingredient are crucial for safety and efficacy. We advise against using any herb without proper guidance and under the supervision of your pet’s veterinary team. NHV formulas are meticulously researched and made in a GMP-certified facility using only the highest quality organic or ethically harvested herbs. Each formulation was expertly developed by a holistic veterinarian and a master herbalist with a combined 50 years of experience in plant-based remedies. Through dedication and research, NHV formulations are safe and effective in extracting the medicinal properties of the herb through a patented process.
immune support
Helps your pet fight Feline Leukemia, FIV virus, other viral infections, and lymphoma
buy 2 and save $3
3 month supply for a small to medium size pet.
Felimm is a gentle, natural liquid herbal formula that helps support your cat’s immune system, strength, and overall comfort—especially when they’re dealing with FeLV, FIV, respiratory challenges, or weakened immunity.
Made with 12 herbs traditionally used to support whole-body wellness — like turmeric, aloe vera, and gotu kola — Felimm helps your cat by:
Felimm is vet-formulated, made with safe, high-quality herbs, and crafted by NHV — trusted by pet parents and veterinarians for over 25 years. It’s natural support you can feel good about giving when your cat needs extra care.
Felimm is a gentle, natural liquid herbal formula that helps support your cat’s immune system, strength, and overall comfort—especially when they’re dealing with FeLV, FIV, respiratory challenges, or weakened immunity.
Made with 12 herbs traditionally used to support whole-body wellness — like turmeric, aloe vera, and gotu kola — Felimm helps your cat by:
Felimm is vet-formulated, made with safe, high-quality herbs, and crafted by NHV — trusted by pet parents and veterinarians for over 25 years. It’s natural support you can feel good about giving when your cat needs extra care.
FeLV and FIV have a strong negative impact on your cat’s immune system and general wellbeing. Left untreated, FeLV can cause serious health issues and other cancers, including lymphoma. Add this natural support to the symptomatic treatment for feline leukemia and FIV that your vet recommends along with diet and nutrition to give them the best fighting chance.
It’s important to help balance your cat’s immune system to help them defend against daily contact with environmental bacteria, fungi, viruses, and protozoa.
NHV’s all-natural supplements for feline leukemia and FIV are formulated by a master herbalist, and a holistic veterinarian with over 20 years of experience.
Felimm for cats contains powerful herbal ingredients that help in fighting viruses and balancing your kitty’s natural immune system.
Add this natural support to the treatment for feline leukemia recommended by your veterinarian. Read more about leukemia and FIV on the holistic veterinarian, Dr. Hillary Cook’s blog.
With the right support cats with FeLV and FIV can lead healthy lives.
NHV offers a Feline Leukemia (FeLV) Kit which is available in both a fighter pack and immune and antioxidant support pack. We also provide a Feline Immunodeficiency Virus (FIV) Kit because, at NHV, we believe in giving our pet parents everything they need to care for their kitty naturally.

St. John’s Wort – A potent antiviral that helps control viral infections and stimulates your cat’s immune system.
Turmeric – A powerful antioxidant that helps fight the damaging effects of free radicals. It strengthens liver function and contains strong antifungal properties.
Aloe Vera – Contains Acemannan, which has been proposed as an adjunctive therapy for cats with FIV. Aloe also contains high levels of vitamins, minerals, amino acids, and other nutrients important for cats with immune disorders.
Alfalfa – Contains high levels of chlorophyll, which works as an antioxidant in your cat's bloodstream. It also contains nutrients beneficial to cats with immune disorders.
Burdock – Helps cleanse the body of toxins and waste that accumulate during illness. It is also high in calcium, phosphorus, iron, thiamine, and riboflavin.
Cat’s Claw – A powerful anti-inflammatory and antioxidant that supports your cat’s immune system and helps strengthen its defenses against viruses like leukemia.
Osha – A natural immune builder that helps pets fight infections including FeLV and FIV. Also has antibacterial and antiviral properties.
Dandelion – A highly nutritious food that stimulates liver secretion, improves digestion and stimulates appetite. It also protects the kidneys and has anti-inflammatory properties.
Gotu Kola– An antioxidant-rich herb known to strengthen the immune system and protect cells from damage caused by free radicals. Helps calm the nervous system.
Usnea – An immune system stimulant with anti-bacterial and anti-fungal properties that help protect your cat’s weakened immune system from Candida Albicans.
Goldenseal – An immune supporting herb with blood cleansing properties.
Myrrh – Helps control bacterial infections that cats with compromised immune systems are so vulnerable to.
Select your pet's weight to determine the correct dose.
To be taken twice daily. Determine your pet’s weight and then use the easy chart below to determine the correct dose. This is the minimum dosage.
Pet's Weight Dosage
0 - 15 lb = 0.5 ml
16 - 30 lb = 1.0 ml
31 - 45 lb = 1.5 ml
46 - 60 lb = 2.0 ml
61 - 75 lb = 2.5 ml
Over 75 lb = 3.0 ml
How to Administer
Shake well before use. The easiest method is to use the dropper provided and place the drops into your pet’s food or favorite treat. You can also use the dropper and squirt directly into the pet’s mouth. Some pets can be finicky, if this occurs consider hiding the drops in foods most pet’s love such as fish, chicken or yogurt or a favourite treat. If your pet only eats dry food then soak a few kibbles at feeding time.
For Best Results
Herbal dietary supplements are beneficial to the health and well-being of your pet and are safe for long-term use. Every pet responds to natural herbal supplements differently, therefore it is important to be consistent and administer the product daily. Supplements generally take two to four weeks to take effect, however this will vary from one animal to the next.
Product Storage
All NHV Natural Pet Products are pure herbal extracts and contain no artificial additives, preservatives or coloring. Shelf life after opening is 6 months and must be refrigerated after opening.
Cautions and Contraindications
Do not use Felimm in pregnant or nursing animals. Speak to your vet before using our products. A second visit is recommended if your pet’s condition does not improve, or deteriorates after continued use of the supplements.
All information provided by NHV Natural Pet Products is for educational purposes only.
FeLV and FIV have a strong negative impact on your cat’s immune system and general wellbeing. Left untreated, FeLV can cause serious health issues and other cancers, including lymphoma. Add this natural support to the symptomatic treatment for feline leukemia and FIV that your vet recommends along with diet and nutrition to give them the best fighting chance.
It’s important to help balance your cat’s immune system to help them defend against daily contact with environmental bacteria, fungi, viruses, and protozoa.
NHV’s all-natural supplements for feline leukemia and FIV are formulated by a master herbalist, and a holistic veterinarian with over 20 years of experience.
Felimm for cats contains powerful herbal ingredients that help in fighting viruses and balancing your kitty’s natural immune system.
Add this natural support to the treatment for feline leukemia recommended by your veterinarian. Read more about leukemia and FIV on the holistic veterinarian, Dr. Hillary Cook’s blog.
With the right support cats with FeLV and FIV can lead healthy lives.
NHV offers a Feline Leukemia (FeLV) Kit which is available in both a fighter pack and immune and antioxidant support pack. We also provide a Feline Immunodeficiency Virus (FIV) Kit because, at NHV, we believe in giving our pet parents everything they need to care for their kitty naturally.

St. John’s Wort – A potent antiviral that helps control viral infections and stimulates your cat’s immune system.
Turmeric – A powerful antioxidant that helps fight the damaging effects of free radicals. It strengthens liver function and contains strong antifungal properties.
Aloe Vera – Contains Acemannan, which has been proposed as an adjunctive therapy for cats with FIV. Aloe also contains high levels of vitamins, minerals, amino acids, and other nutrients important for cats with immune disorders.
Alfalfa – Contains high levels of chlorophyll, which works as an antioxidant in your cat's bloodstream. It also contains nutrients beneficial to cats with immune disorders.
Burdock – Helps cleanse the body of toxins and waste that accumulate during illness. It is also high in calcium, phosphorus, iron, thiamine, and riboflavin.
Cat’s Claw – A powerful anti-inflammatory and antioxidant that supports your cat’s immune system and helps strengthen its defenses against viruses like leukemia.
Osha – A natural immune builder that helps pets fight infections including FeLV and FIV. Also has antibacterial and antiviral properties.
Dandelion – A highly nutritious food that stimulates liver secretion, improves digestion and stimulates appetite. It also protects the kidneys and has anti-inflammatory properties.
Gotu Kola– An antioxidant-rich herb known to strengthen the immune system and protect cells from damage caused by free radicals. Helps calm the nervous system.
Usnea – An immune system stimulant with anti-bacterial and anti-fungal properties that help protect your cat’s weakened immune system from Candida Albicans.
Goldenseal – An immune supporting herb with blood cleansing properties.
Myrrh – Helps control bacterial infections that cats with compromised immune systems are so vulnerable to.
Select your pet's weight to determine the correct dose.
To be taken twice daily. Determine your pet’s weight and then use the easy chart below to determine the correct dose. This is the minimum dosage.
Pet's Weight Dosage
0 - 15 lb = 0.5 ml
16 - 30 lb = 1.0 ml
31 - 45 lb = 1.5 ml
46 - 60 lb = 2.0 ml
61 - 75 lb = 2.5 ml
Over 75 lb = 3.0 ml
How to Administer
Shake well before use. The easiest method is to use the dropper provided and place the drops into your pet’s food or favorite treat. You can also use the dropper and squirt directly into the pet’s mouth. Some pets can be finicky, if this occurs consider hiding the drops in foods most pet’s love such as fish, chicken or yogurt or a favourite treat. If your pet only eats dry food then soak a few kibbles at feeding time.
For Best Results
Herbal dietary supplements are beneficial to the health and well-being of your pet and are safe for long-term use. Every pet responds to natural herbal supplements differently, therefore it is important to be consistent and administer the product daily. Supplements generally take two to four weeks to take effect, however this will vary from one animal to the next.
Product Storage
All NHV Natural Pet Products are pure herbal extracts and contain no artificial additives, preservatives or coloring. Shelf life after opening is 6 months and must be refrigerated after opening.
Cautions and Contraindications
Do not use Felimm in pregnant or nursing animals. Speak to your vet before using our products. A second visit is recommended if your pet’s condition does not improve, or deteriorates after continued use of the supplements.
All information provided by NHV Natural Pet Products is for educational purposes only.
immune & virus support
Vet-Formulated Natural Support to Help Fight Feline Leukemia
bundle and save with pet expert kits
3 month supply for a small to medium size pet.
What is it?
All-natural supplements that help support cats with FeLV.
How Does it Work?
Why Should I Trust It?
Vet-approved and vet-formulated herbal blends.
What is it?
All-natural supplements that help support cats with FeLV.
How Does it Work?
Why Should I Trust It?
Vet-approved and vet-formulated herbal blends.
A powerful pack of two Natural herbal supplements that help fight the battle against Feline Leukemia. Both safe to use with vet-recommended treatment for feline leukemia. They help to balance a cat’s immune system and fight infection.
Feline leukemia is a retrovirus that is known to cause a variety of cancers, so prevention and control are essential for your kitty’s health and survival. For more information, see our article on understanding feline leukemia with Dr. Hillary Cook.
Read Buddy's Story of how he bounced back from feline leukemia with NHV’s all-natural supplements.
If you are unsure about using herbal supplements to add support to the feline leukemia natural treatment prescribed by your vet for comprehensive care, you can schedule a consultation with one of our holistic veterinarians who can answer all your questions and concerns. At NHV your pet’s health is our top priority.
This product also provides support for pets exposed to environmental toxins as well as promoting strong muscle and bone growth.
Select your pet's weight to determine the correct dose.
To be taken twice daily. Determine your pet’s weight and then use the easy chart below to determine the correct dose. This is the minimum dosage.
Pet's Weight Dosage
0 - 15 lb = 0.5 ml
16 - 30 lb = 1.0 ml
31 - 45 lb = 1.5 ml
46 - 60 lb = 2.0 ml
61 - 75 lb = 2.5 ml
Over 75 lb = 3.0 ml
How to Administer
Shake well before use. The easiest method is to use the dropper provided and place the drops into your pet’s food or favorite treat. You can also use the dropper and squirt directly into the pet’s mouth. Some pets can be finicky, if this occurs consider hiding the drops in foods most pet’s love such as fish, chicken or yogurt or a favorite treat. If your pet only eats dry food then soak a few kibbles at feeding time.
For Best Results
Herbal dietary supplements are beneficial to the health and well-being of your pet and are safe for long-term use. Every pet responds to natural herbal supplements differently, therefore it is important to be consistent and administer the product daily. Supplements generally take two to four weeks to take effect, however this will vary from one animal to the next.
Product Storage
All NHV Natural Pet Products are pure herbal extracts and contain no artificial additives, preservatives or coloring. Shelf life after opening is 6 months and must be refrigerated after opening.
Cautions and Contraindications
Do not use in pregnant or nursing animals.
All information provided by NHV Natural Pet Products is for educational purposes only.
A powerful pack of two Natural herbal supplements that help fight the battle against Feline Leukemia. Both safe to use with vet-recommended treatment for feline leukemia. They help to balance a cat’s immune system and fight infection.
Feline leukemia is a retrovirus that is known to cause a variety of cancers, so prevention and control are essential for your kitty’s health and survival. For more information, see our article on understanding feline leukemia with Dr. Hillary Cook.
Read Buddy's Story of how he bounced back from feline leukemia with NHV’s all-natural supplements.
If you are unsure about using herbal supplements to add support to the feline leukemia natural treatment prescribed by your vet for comprehensive care, you can schedule a consultation with one of our holistic veterinarians who can answer all your questions and concerns. At NHV your pet’s health is our top priority.
This product also provides support for pets exposed to environmental toxins as well as promoting strong muscle and bone growth.
Select your pet's weight to determine the correct dose.
To be taken twice daily. Determine your pet’s weight and then use the easy chart below to determine the correct dose. This is the minimum dosage.
Pet's Weight Dosage
0 - 15 lb = 0.5 ml
16 - 30 lb = 1.0 ml
31 - 45 lb = 1.5 ml
46 - 60 lb = 2.0 ml
61 - 75 lb = 2.5 ml
Over 75 lb = 3.0 ml
How to Administer
Shake well before use. The easiest method is to use the dropper provided and place the drops into your pet’s food or favorite treat. You can also use the dropper and squirt directly into the pet’s mouth. Some pets can be finicky, if this occurs consider hiding the drops in foods most pet’s love such as fish, chicken or yogurt or a favorite treat. If your pet only eats dry food then soak a few kibbles at feeding time.
For Best Results
Herbal dietary supplements are beneficial to the health and well-being of your pet and are safe for long-term use. Every pet responds to natural herbal supplements differently, therefore it is important to be consistent and administer the product daily. Supplements generally take two to four weeks to take effect, however this will vary from one animal to the next.
Product Storage
All NHV Natural Pet Products are pure herbal extracts and contain no artificial additives, preservatives or coloring. Shelf life after opening is 6 months and must be refrigerated after opening.
Cautions and Contraindications
Do not use in pregnant or nursing animals.
All information provided by NHV Natural Pet Products is for educational purposes only.
skin support
All-Natural Dog Paw Pad Ointment & Muscle Aid
buy 2 and save $3
What is it?
NHV Heal Care is an all-around soothing ointment for dog paw pads, sore muscles and even dry skin on their sweet little noses.
How Does it Work?
Why Should I Trust It?
Wild-crafted ingredients and vet-approved formulation.
What is it?
NHV Heal Care is an all-around soothing ointment for dog paw pads, sore muscles and even dry skin on their sweet little noses.
How Does it Work?
Why Should I Trust It?
Wild-crafted ingredients and vet-approved formulation.
Most dogs love to run and play in the great outdoors, and many pups would be over the moon playing fetch for hours on end. But sometimes, they don't even notice that they are damaging their little toe beans because they are having too much fun! NHV Heal Care is an all-around soothing ointment for dog paw pads, sore muscles and even dry skin on their sweet little noses.
Dog Paw Pad Ointment for Burn Support
Paw pad injuries due to over-exercise are common injuries for active pups, especially on hot summer days. Running back and forth on rough surfaces like concrete, pavement, or gravel may cause tenderness, blisters, burns, and possible peeling in the pad skin. As a rule of thumb, if the surface is too hot to put the back of your hand onto it, then it isn't safe for your little one to be walking on it either. Dog paw pads are pretty tough, but they aren't meant for running on such hard surfaces for long periods of time. Don't feel bad if your fluffy friend has a paw pad injury and you didn’t notice right away because there may not be any symptoms until they are settling down at home later. Just like summer, winter can present some risks as well. It is easy for your pup's paw pads to get dehydrated, dry or cracked with dry, cold weather. The iconic blue/green salt that is sprinkled onto sideways and walkways can definitely cause ouchies in your furkiddo's paws. To avoid paw pad injuries, consider protective accessories like booties or shoes for your furbaby. Shorter walks, limiting time on hot surfaces and using a topical ointment for dog paws are other ways to prevent paw pad injuries.
How NHV’s Dog Paw Ointment Supports Paw Pad Injuries and More
Paw pad injuries can be minor scratches but sometimes the pads are so badly damaged that the surface of the skin begins to blister and peel away from the foot. These injuries can take quite a while to heal and cause a lot of pain and discomfort for your furkiddo. For more severe injuries, vet-prescribed antibiotics may be required. For less severe burns and scrapes, a topical ointment for dog paws like NHV Heal Care can help soothe inflamed skin and help decrease the risk of infection - your pup's paws aren't always the cleanest so they can be at a higher risk for a bacterial or fungal (yeast) infection.
Heal care for dogs contains ingredients like Arnica and St. John's Wort which are beneficial for a variety of issues from burnt paw pads to achy joints. Arnica is known for its ability to help sprains and joint discomfort by dilating blood vessels, increasing circulation to the affected area and enhancing recovery. St. John’s Wort is a cooling herb that has traditionally been used for reducing inflammation and promoting healing from injuries such as burns, bruises, sores, cramps, sprains and discomfort caused by nerve damage.
Promote Healing and Provide Relief with NHV’s Natural Pet Products
It’s great to know that there are ways to support your furkiddo’s health naturally! All NHV products use only the finest organic, wild-crafted ingredients and formulated by the combined efforts of a master herbalist and veterinarian with 50+ years of experience. If you have any questions about paw pad health or need any holistic advice, please get in touch with an NHV pet expert using the button below.
Made with the finest, organically grown, or ethically harvested herbs. Made specifically for pets, vet-formulated and vet approved.
How to Administer
Topical ointment: Clean and dry paw pads. Apply to affected area 3 to 4 times per day until healed. It may be necessary to use booties or wrap the paw with gauze dressing so that your pet does not lick the ointment.
Caution
Do not apply on open or bleeding wounds. Heal Care ointment contains arnica which may cause a skin allergy on some very sensitive pet’s. Try the product on a hairless part of the body first to test for sensitivity
Most dogs love to run and play in the great outdoors, and many pups would be over the moon playing fetch for hours on end. But sometimes, they don't even notice that they are damaging their little toe beans because they are having too much fun! NHV Heal Care is an all-around soothing ointment for dog paw pads, sore muscles and even dry skin on their sweet little noses.
Dog Paw Pad Ointment for Burn Support
Paw pad injuries due to over-exercise are common injuries for active pups, especially on hot summer days. Running back and forth on rough surfaces like concrete, pavement, or gravel may cause tenderness, blisters, burns, and possible peeling in the pad skin. As a rule of thumb, if the surface is too hot to put the back of your hand onto it, then it isn't safe for your little one to be walking on it either. Dog paw pads are pretty tough, but they aren't meant for running on such hard surfaces for long periods of time. Don't feel bad if your fluffy friend has a paw pad injury and you didn’t notice right away because there may not be any symptoms until they are settling down at home later. Just like summer, winter can present some risks as well. It is easy for your pup's paw pads to get dehydrated, dry or cracked with dry, cold weather. The iconic blue/green salt that is sprinkled onto sideways and walkways can definitely cause ouchies in your furkiddo's paws. To avoid paw pad injuries, consider protective accessories like booties or shoes for your furbaby. Shorter walks, limiting time on hot surfaces and using a topical ointment for dog paws are other ways to prevent paw pad injuries.
How NHV’s Dog Paw Ointment Supports Paw Pad Injuries and More
Paw pad injuries can be minor scratches but sometimes the pads are so badly damaged that the surface of the skin begins to blister and peel away from the foot. These injuries can take quite a while to heal and cause a lot of pain and discomfort for your furkiddo. For more severe injuries, vet-prescribed antibiotics may be required. For less severe burns and scrapes, a topical ointment for dog paws like NHV Heal Care can help soothe inflamed skin and help decrease the risk of infection - your pup's paws aren't always the cleanest so they can be at a higher risk for a bacterial or fungal (yeast) infection.
Heal care for dogs contains ingredients like Arnica and St. John's Wort which are beneficial for a variety of issues from burnt paw pads to achy joints. Arnica is known for its ability to help sprains and joint discomfort by dilating blood vessels, increasing circulation to the affected area and enhancing recovery. St. John’s Wort is a cooling herb that has traditionally been used for reducing inflammation and promoting healing from injuries such as burns, bruises, sores, cramps, sprains and discomfort caused by nerve damage.
Promote Healing and Provide Relief with NHV’s Natural Pet Products
It’s great to know that there are ways to support your furkiddo’s health naturally! All NHV products use only the finest organic, wild-crafted ingredients and formulated by the combined efforts of a master herbalist and veterinarian with 50+ years of experience. If you have any questions about paw pad health or need any holistic advice, please get in touch with an NHV pet expert using the button below.
Made with the finest, organically grown, or ethically harvested herbs. Made specifically for pets, vet-formulated and vet approved.
How to Administer
Topical ointment: Clean and dry paw pads. Apply to affected area 3 to 4 times per day until healed. It may be necessary to use booties or wrap the paw with gauze dressing so that your pet does not lick the ointment.
Caution
Do not apply on open or bleeding wounds. Heal Care ointment contains arnica which may cause a skin allergy on some very sensitive pet’s. Try the product on a hairless part of the body first to test for sensitivity
Published: December 12, 2025