EASY TO TAKE Vitamin D3 K2 Drops – Two essential vitamins in liquid format. Each serving (4 drops) contains a potent combination of vitamin D3 (4000 IU) and vitamin K2 (25mcg). This 30ml bottle contains 300 servings, approximately 10 months' supply no need to keep reordering. Other added benefits of drops can be added in water or added to your favorite food (No need to consume separately). WHY BUY PROWISE Vitamin D3 And K2 Drops? - Vitamin d3 and k2 drops work really well with each other. As both Vitamins are natural partners while Vitamin D helps with a boosted immune system and overall better health, added Vitamin K actually works to boost the absorption of Vitamin D in the body for better results.