I really like the convenient of this vitamin d drops. There is no need to take out a measurement to draw up the dose, one drop and you're done! Working as a pharmacist, I have witnessed many dosage error because often time there is an extra step we have to do before giving our babies the meds, drawing up the dose sounds simple but some people do make unintentionally mistakes of drawing up too much or too little. This will reduce medication errors, one drop is simple to administer and has definitely save me a lot of time, also there is no need to wash anything afterwards. I usually place the drop straight into baby's mouth or right before nursing. I haven't gone back to the vitamin d liquid ever since I started using this. As a pharmacist, I'm always extra careful with the listed active and inactive ingredients in a product before using and recommending it to friends and family