Yes it is, it can cause serious photo-sensitivity in horses. The condition can get bad enough to cause the horses skin to slough away.
GOAT
Goat weed is a plant in the Berberidacae family. It is also known as Epimedium. Goat weed is used as an herbal supplement and is thought to be an aphrodisiac.
To ensure a weed killer is safe for horses, look for products labeled as horse-safe, avoid using chemicals toxic to horses, follow manufacturer instructions carefully, and consult with a veterinarian before application.
Goat shrimp eat Horny Goat Shrimp Weed
no horses can't eat silver weed
Goat
Horny goat weed and maca are herbal supplements that works as a stimulant and libido enhancer and yes it works very well.
Weed killer can remain toxic in the environment for weeks to months, depending on the type of weed killer used and environmental conditions.
horny goat weed + ginseng
you turn into a goat once you smoke it, try it you turn back to normal over the night
True weeping willows are not toxic to horses, but other varieties may be.
Why would you want to waste expensive cheese on horses.