VITASERUM DEFENSAS FORTE Vitaserum Effervescent Tablets. Nutritional supplement with vitamins and minerals. There are times during the year when your body may require additional support. Vitamin C is well-known for enhancing immune function, while Vitamin D3, Zinc, and Selenium also contribute positively to this system. Vitaserum Defensas Forte features a potent blend of Vitamin C, Vitamin D3, Selenium, and Zinc all in one effervescent tablet. Its four key actions promote the healthy operation of your immune system, while Vitamin C aids in alleviating fatigue and weariness. Benefits include: • Free from preservatives, sugars, gluten, lactose, and gelatin. • Vegetarian-friendly.