Main product description BioBran Plus Vitamin D3 is enriched with vitamin D3 and brewers yeast extract. The smaller content of the patented MGN-3 mixture in one tablet (50 mg) is balanced by important substances contained in brewers yeast, which at the same time makes it a more economical alternative to the preparations BioBran 250 and BioBran 1000. Vitamin D3 ensures a strong effect on strengthening the patients own immunity