Haarlem Oil is a natural supplement composed of bioavailable sulfur (16%), pine turpentine (80%), and linseed oil (4%). Developed in the 17th century in Haarlem, Netherlands, it has been used for centuries to support respiratory health, joint function, detoxification, and skin conditions.
In capsules: generally, 1 to 3 capsules per day, depending on the need (maintenance, treatment, or seasonal change).
In drops: for children under 15kg, drops can be mixed with sweet food to mask the strong taste.
Haarlem Oil is generally well tolerated. However, rare allergic reactions may occur, such as swelling, hives, or difficulty breathing. Discontinue use and seek medical attention if these symptoms appear.
Use with caution. While clinical studies have shown effectiveness in children aged 5 months to 8 years for bronchial infections, the strong taste may cause rejection. Always consult a pediatrician before use.
Not recommended during breastfeeding, as it may alter the taste of breast milk. Pregnant women should consult a healthcare provider before use.
There are no widely reported interactions, but due to its sulfur and turpentine content, consult a healthcare professional if you are taking prescription medications or have chronic conditions.
Available through haarlem-oil.com shop. Always choose reputable sources to ensure product authenticity.
Discover how GHO for horses supports joint health, reduces inflammation, and boosts recovery. Learn about proper dosage, benefits, and side effects.
Haarlem oil is a naturally occurring bioavailable sulfur compound widely used in equine supplements to support joint health, reduce inflammation, and promote overall wellness. It is especially popular among horse owners and trainers who want to keep performance horses comfortable and sound.
Haarlem oil is best known for its anti-inflammatory properties, making it a go-to supplement for horses with arthritis, joint stiffness, or age-related mobility issues. It helps reduce swelling and improve flexibility.
By reducing inflammation, Haarlem oil can act as a natural pain reliever without the harsh side effects of NSAIDs (non-steroidal anti-inflammatory drugs).
Performance horses under heavy training or competition benefit from GHO’s ability to speed up muscle recovery, reduce soreness, and support healthy tissue repair.
Internal Use: Sulfur supports the formation of keratin and collagen, essential for strong hooves and a glossy coat. It also aids in detoxification and reduces inflammation, promoting overall skin and hoof health from within. When used in controlled amounts pine terpene antiseptic, indirectly benefiting coat condition by improving overall wellness.
External Use: Sulfur-based topical treatments can help treat fungal infections, mud fever, and skin irritations, supporting healthy skin and coat regeneration. Applied topically, pine terpene helps treat wounds, skin infections, irritations, and other dermatological conditions. Its natural antiseptic and anti-inflammatory properties also make it an effective insect repellent, protecting the skin from further damage.
The sulfur and pine terpene oil components have natural antiseptic and antibacterial properties, helping to combat infections in the urinary tract Detoxification & Drainage: Haarlem Oil acts as a powerful drainer, stimulating the liver and kidneys to eliminate toxins more efficiently. This helps flush out bacteria and reduce inflammation in the urinary system.
It stimulates the pituitary and adrenal glands, enhancing the horse’s natural immune defenses, which is crucial for fighting off infections.
Regular use can help prevent recurrence of UTIs by maintaining a clean and well-functioning urinary system.
10 ml doses of GHO Genuine Haarlem Oil over eight consecutive days, then 10ml every second day for the following two weeks, after ten days pause, repeat if necessary. Although, Genuine Haarlem Oil has a particular characteristic smell, experiments and our experience using Genuine Haarlem Oil has proven that horses love the flavor of this product and will even search it out in their food. The dosage may be administered in the food or orally.
| Horse Type | Recommended Haarlem oil Dose |
|---|---|
| Maintenance (light work) | 10 ml /day |
| Moderate Workload | 10 ml /day |
| Heavy Training or Injury Recovery | 10 – 15 ml /day |
| Foal - Colt | 5 – 7 ml /day |
Duration of treatment can vary between 1-2 weeks and resumed after a break of 1 week to observe improvements
✅ Tip: Begin with a lower dose and gradually increase it over several days. Observe your horse’s response closely and consult your veterinarian for accurate dosing. Always ensure fresh water is available at all times.
Yes. It can be applied to wounds or skin irritations to promote healing and reduce inflammation
Is it suitable for all horses?Yes, including older horses, competitive athletes, and those recovering from illness or injury. However, always monitor individual response
How should Haarlem Oil be administered?Yes, GHO is safe for daily, long-term use, especially in older horses or those in heavy work.
Yes. It promotes bile secretion and helps eliminate intestinal parasites, which are a common cause of colic
Yes. The pine turpentine component supports lung function, clears mucus, and may help with conditions like COPD or heaves
Absolutely. It helps eliminate toxins, reduce fatigue, and support recovery after intense exercise
Haarlem Oil is known for its fast diffusion in the horse’s body—within just 30 minutes of administration, the active compounds begin circulating through the bloodstream, reaching key organs and tissues.
Timeline for Visible ResultsWhile GHO offers natural support, it may not fully replace prescription medications in severe cases. Always consult your vet for chronic joint issues.
Final Thoughts: Is Haarlem oil Worth It for Your Horse?Absolutely. Genuine Haarlem oil is a cost-effective, natural, and proven supplement to support your horse’s joints, muscles, and immune health. Whether you have an aging trail horse or a competitive athlete, adding GHO to their diet can help keep them feeling and performing their best.
Yes, Haarlem Oil is considered safe for dogs, cats, poultry, pigs, ducks, and horses when used as directed. Haarlem Oil is not recommended during breastfeeding, as it may alter the taste of breast milk and affect nursing behavior. Please consult a veterinarian before use if your animal is lactating. There are no known side effects.
Yes. It can be applied to wounds, skin infections, or areas affected by fungal conditions. Use gauze soaked in Haarlem Oil and cover with cotton or a poultice.
No known side effects have been reported. However, Haarlem Oil has a strong odor and color, which may be unpleasant to some animals.
Yes, but consult a veterinarian to avoid interactions. It’s often used alongside black seed oil for external applications.
Yes, it can be used in cycles (e.g., 2 weeks on, 1 week off) for maintenance or chronic condition.