Reply To: Hi, I am new to the forum but have a few questions. I am going to be 40 soon and a mother to two boys (1 and 3). I am nursing my 1 year old son. I have the Doctor's Best Vitamin D3 5000IU and Carlson Vitamin D 3 for my boys. I take 3 softgels. I drop one liquid (400 IU) on my nipple for my 1 year old son and I drop one liquid (1000IU) on my 3 years old son's tongue. Are those numbers correct? Let me know. Good day!