Optibac Probiotics for Cholesterol 30. Optibac For Cholesterol is a high-quality friendly bacteria supplement formulated for those concerned about their cholesterol levels. With Omega 3 Alpha-linolenic acid (ALA) to support the maintenance of normal blood cholesterol levels and added Vitamin B1 to support heart function.  Directions  One-a-day formula; delicious vanilla-flavored powder can be taken alone or mixed into cool, non-acidic food or drink, with no need for refrigeration. Ingredients. Bulking agents: sorbitol, corn fibre Alpha-linolenic acid (300mg) Sweetener: xylitol Anti-caking agent: organic rice fibre Live cultures: Lactobacillus plantarum CECT7527, Lactobacillus plantarum CECT7528, Lactobacillus plantarum CECT7529 Vanilla flavouring Vitamin B1 (0.22mg, 20% NRV)