Chasteberry supports hormone balance, improves mood, and aids in managing Cushing's disease in horses. Learn about its benefits, uses, and safe administration.
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A daily dose of chasteberry for horses diagnosed with Cushing’s was found to:
[3]
- improve coat quality
- improve energy levels
- improve mood
- reduce laminitis
- reduce abnormal fat deposits
In an anecdotal case report, Dr. Eleanor Kellon, VMD of the ECIR Group describes
10 horses with Cushing’s disease showing improvements after several weeks on a commercial product containing Chasteberry extract.
All 10 horses exhibited
rapid shedding of the abnormal coat within 2-3 weeks of treatment. Horses that presented with low energy levels, depression, and pain due to laminitis before treatment showed
improvement in these symptoms.
Several of the horses examined in this report also experienced
improved insulin and glucose levels, suggesting benefits for
metabolic health. The changes in insulin signaling were particularly noticeable in younger animals.
[9]
Chasteberry vs. Pergolide
Pergolide is the pharmaceutical drug most commonly used in horses to treat symptoms of Equine Cushing’s Disease. Pergolide is an
ergoline-based dopamine receptor agonist that is used in humans to treat
Parkinson’s Disease.
Many horse owners seek out Chasteberry as a
natural alternative to pergolide, but this herb is
not approved as a replacement for pergolide treatment.
If you suspect your horse is developing
Cushing’s symptoms or has recently been diagnosed with early Cushing’s/PPID,
speak with your veterinarian about using chasteberry to improve symptoms before administering pergolide or in combination with pergolide.
Early vs. Advanced PPID
Chasteberry appears to be more beneficial in horses with
early PPID, but may not be as effective as pergolide in horses in advanced stages of the disease.
One study showed no benefit of a commercial chasteberry product in PPID horses when it was
compared to pergolide and showed deterioration in PPID symptoms in some horses.
[10]
In this study, 14 horses with Cushing’s disease were given chasteberry extract daily for
between two to six months. The horses were also treated with a high dose of
pergolide either before or after receiving chasteberry.
In this comparative study,
only one of the horses saw an improvement in their condition relative to treatment with pergolide.
These horses had
advanced PPID, meaning that their symptoms has been present for a longer period of time or were more severe. Horses with advanced PPID are
less likely to have symptoms resolved by chasteberry alone and require pergolide therapy to see significant clinical benefit.
The authors of this study acknowledged that the manufacturer did not provide details regarding chasteberry concentration or other
active constituents and the investigators
did not test the product. It is unclear how much was given and what other ingredients were in the product.
[10]
PPID Study with Horses and Ponies
In another study, a commercial chasteberry product was tested in
38 horses and ponies with PPID. The equids were divided into three groups:
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- Animals that had never received treatment and were given chasteberry alone for six months
- Animals that had never received treatment and were given chasteberry plus pergolide for six months
- Animals that were already on pergolide continued taking this drug alone for first 3 months and then were given pergolide plus chasteberry for the final 3 months
Blood tests and assessment of
clinical symptoms were conducted before treatment, at 3 months and after 6 months. Chasteberry treatment alone
improved clinical scores in the horses after three months and this improvement continued to six months.
The researchers observed normalization of the
hair coat and behavioural changes with owners noting that the horses and ponies were
more lively and alert. All horses showed improvement in Cushing’s symptoms as determined by a scoring system.
Adrenocorticotropic Hormone
Horses with PPID have pituitary glands which
overproduce adrenocorticotropic hormone (ACTH) resulting in many of the symptoms associated with this disease. The study results showed that chasteberry therapy alone
did not improve ACTH levels. However, it has been established that pergolide does lower ACTH.
Therefore, chasteberry should not be considered a complete replacement therapy for pergolide but can be used as an adjunct therapy to
support improvement of symptoms.
That being said, the main outward sign of elevated ACTH (
excessive hair growth and failed shedding) was improved by Chasteberry.
[11]