Biocare vitasorb a 15ml vitasorb a is a simple liquid vitamin a preparation providing 2500iu per drop vitasorb vitamins can be taken under the tongue or added to drinks the vitasorb range is particularly suited to those with dietary intolerances additional information liquid vitamin a ideal for those who have difficulty swallowing capsules and tablets can be taken sublingually under the tongue for those with gastrointestinal or malabsorption problems provides 2500iu vitamin a per dr