Supplements price request Switzerland

i am from switzerland, i want to start an amazon fba business and i am looking for a supplier for supplements. i want to start selling whey protein powder with my own brand and want to expand then to other supplements also when the business goes well. i want to start with an order of 1000kg and order then regullary also bigger amounts. i want to order 1000 x 1kg packages with 4-5 flavours. i hope i will get a good price to can make regulary big orders.