Optibac Adult Gummies 30. Delicious mixed berry probiotic gummies for adults containing the scientifically proven strain Bacillus coagulans Unique IS-2 and prebiotic FOS, combined with Vitamin D, Zinc and Calcium to support gut and immune health in one daily supplement.. Ingredients. Fruit juice/puree (apple juice/puree concentrate, strawberry puree, raspberry puree, blackberry puree), fructooligosaccharide fibres (FOS 0.85g). Tricalcium phosphate (calcium 120mg, 15% NRV*). Lemon juice concentrate. Zinc gluconate (zinc 8mg, 80% NRV*). Black carrot juice concentrate, gelling agent: pectin, citrus fibre. Live cultures: Bacillus coagulans Unique IS-2. Natural flavouring. Vitamin D3 (10µg/400IU)