Container for 'Seven Seas Pure Cod Liver Oil and Multivitamins' made by Rexam Containers Limited for Seven Seas Health Care Limited, c1997

Vitamins and supplements are increasingly popular and a 2022 YouGov poll found that nearly half of UK adults surveyed reported taking them regularly. Cod liver oil is a supplement which contains vitamin A, vitamin D and omega-3 fatty acids. This formulation also includes additional vitamins like vitamin C. However, the scientific evidence for the benefits of taking many vitamins is inconclusive. Researchers have found that most people can get all the vitamins and minerals they need from a healthy balanced diet.