Natures Sunshine Nature's Sunshine has built its reputation on purity, quality and efficacy. NSP tests for foreign materials and for micro-contamination, such as salmonella and E.coli, yeast and mould as well as heavy metal contamination, pesticides, herbicides, fungicides and PCBs. Organic growers strive to offer crops free of chemical additives. But even organic material requires extensive testing. An organic label isn’t a guarantee of safety - an NSP label, backed by extensive testing is. Nature’s Sunshine has earned an enviable reputation worldwide because it simply won't compromise on quality. Symprove Symprove is a water-based multi-strain supplement that contains 4 unique strains of live activated bacteria. These include: L. rhamnosus, E. faecium, L. acidophilus, and L. plantarum. Normally a healthy gut would already contain all four of these, however when it doesn’t, it can soon become unbalanced.