GNC or any Vitamin Store in Jeddah

To those in the know:
I've been trying to find a General Nutrition Store here in Jeddah, I did a search for GNC locations on Google and the locations that came up in the results are no longer in business. Does anyone know, with 100% certainty, where a GNC store is here in Jeddah??? A phone number would also be helpful as well. If there isn't a GNC in the city, are there any other stores where one could purchase vitamins, amino acids, etc?? A thousand thanks in advance for any forthcoming replies!