Pantothenic Acid What Else To Take?

Im guying to be buying some tablets from justvitamins (http://www.justvitamins.co.uk/products/Pantothenic-Acid-(Vitamin-B5)-550mg-1070.aspx) are these ok or are slow release better? I saw some slow release at Holland and Barrett.

Also i read a story about someone who became seriously ill after 2 years of taking 10 tablets a day, he said something about a deficiency elsewhere and taking other tablets to stop this happening at the same time. Does anyone know what these other tablets are?