Dorsal Displacement of the Soft Palate (DDSP)
In DDSP, the rear edge of the soft palate displaces over the epiglottis and temporarily obstructs the airways, especially at fast work. Typical is a gurgling breathing sound on exhalation with a sudden drop in performance; many horses start normally and only break down at high speed.
Veterinary care required
This condition belongs in veterinary diagnosis and treatment. Compounds are at most supportive.
Priority · vet & management
Diagnosis is veterinary, ideally by dynamic endoscopy under exertion to make the displacement visible. Management ranges from treating accompanying airway irritation and training adjustment to aids or surgical procedures; complementary feeds cannot fix the cause.
Possible causes
- · functional instability of the soft palate under load
- · accompanying airway inflammation discussed as a cofactor
- · fatigue of the pharyngeal/laryngeal musculature
- · an unfavourable head-neck position during very fast work
Supportive compounds · supplementary feed, not medication
Ribwort plantain
AMGFEI freetraditionally soothing for the airways (adjunctive)
Compound profile →Marshmallow
AMGFEI freemucilage, traditionally soothing for the mucous membranes
Compound profile →Vitamin C
AMGFEI freeantioxidant under oxidative airway strain (adjunctive)
Compound profile →Vitamin E
AMGFEI freeantioxidant for muscle and mucosal cells (adjunctive)
Compound profile →Prevention
Careful performance diagnostics, management of accompanying airway inflammation and adapted training can reduce the load; there is no reliable causal prevention.
Equiterna's take
Equiterna assigns DDSP to performance diagnostics — compounds here at most accompany an irritation-free airway mucosa, the assessment of the displacement remains veterinary.
Usage note
This content is for information and education. It does not replace veterinary diagnosis or treatment. If your horse shows signs of illness, consult a veterinarian.
Equiterna is an intermediary platform for equine knowledge, marketplace and tools — not a veterinary-medicines dealer, veterinary practice or pharmacy. Compound information is study-attributed and free of healing claims. Legal framework: Regulation (EU) 2019/6 / TAMG (DE/AT), Feed Regulation (EC) 767/2009, FEI Prohibited Substances List, HWG.


