ProKalm acts rapidly, usually within 15-30 minutes and the effects can last up to 8 hours. Can be used for horses that are difficult to handle in situations such as clipping, shoeing, travelling, backing, etc where a sedative such as ACP might be considered. ProKalm can be fed as required. ProKalm can also be fed daily to achieve a long lasting reduction in anxiety. ProKalm does not contain any prohibited substances and can be used for horses racing and competing under FEI rules. Now available as a single dose syringe for a no fuss, no waste option.