Duobact is a premium quality product that offers a potent combination of prebiotic fibre, vitamin D3 and a blend of live probiotic bacteria cultures HOWARU® Restore II that contains 4 different strains – Lactobacillus acidophilus, Lactobacillus paracasei, Bifidobacterium lactis Bi-07, Bifidobacterium lactis BI-04.