Any case of founder in a horse will not resolve until the cause of the problem has been treated; this may mean your horse needs to go onto a weight loss program or start a course of medication to treat underlying hormonal problems. Once the cause of founder has been treated, it is then a case of managing the horse's hoof care regime until the pain and inflammation have fully subsided.
In a mild case of laminitis, the horse should not be exercised for at least four weeks after the pain has subsided. This will give the laminae within the hoof sufficient time to regain their strength. In more severe cases, remedial farriery work may continue for several months or even years.