Chaste Tree Berries

Possibly. Both Chaste Tree Berry and pergolide act on the dopaminergic pathway, and current veterinary thinking suggests they may compete with each other rather than stack neatly. If your horse is on Prascend for diagnosed PPID, speak to your vet before adding Chaste Tree Berry to the routine.

Yes. Although it is most commonly fed to mares, anecdotally many owners use it for geldings showing "stallion-like" or hormonal-style behaviour and for older geldings managing PPID symptoms. The dopaminergic action is not gender-specific.

Chaste Tree Berry is a slow-acting herb. Most owners report noticeable changes after 4 to 6 weeks of consistent daily feeding, with the fullest picture often becoming clear after a complete seasonal cycle.

No. Chaste Tree Berry isn't a contraceptive and shouldn't shut down a mare's cycle. The aim is steadier behaviour through the cycle, not the absence of one. If a mare's seasons stop entirely, speak to your vet

Many owners feed it year-round, while others use seasonal blocks (typically through spring and autumn). Both approaches are reasonable; for consistently moody mares the year-round approach often gives the steadiest result.

The whole berries take longer to chew and suit horses that enjoy foraging or that need slower eating. The powder mixes more evenly through feed and is easier to dose precisely, making it preferred for very fussy horses or those on measured rations.