VITAMIN C – Tableting with LUBRITAB^® RBW Lubricant

Vitamin C (ascorbic acid) is a popular supplement available over the counter in dosage forms such as tablets, capsules, sprinkles and gummies. From a formulator’s perspective, it can be challenging since it is poorly compressible and is very sensitive to moisture.Because of this, it requires effective lubrication to facilitate ejection, but with minimal impact on tablet hardness.This issue is common among supplements and is the “double-edged sword” of tablet lubrication. This study compared the lubricant functionality of LUBRITAB® RBW (rice bran wax) at several levels with a commonly used lubricant, stearic acid.