How long does it take for MgO to start working?

[horselover522]

Started horse on it on Thursday (has been nervy/spooky) and last night he was more chilled then he has been in a while, and was the same this morning.

Co-incidence, or has the MgO kicked in?

 

[PooJay]

Started horse on it on Thursday (has been nervy/spooky) and last night he was more chilled then he has been in a while, and was the same this morning.

Co-incidence, or has the MgO kicked in?

My mare was REALLY deficient in it. Noticed a difference with a day or 2. Totally different horse within a week

 

[soulfull]

About a week

 

[miss_wilson]

A few days for my girl

 

[Elsbells]

It's immediate if they are really deficient in their diet. It is an essential mineral and they all need it.