Hi @faith123. I was just passing by when I saw your question about Vitamin D3. I just finished dealing with it myself, and that included some research. Here's the crux of what I learned. Maximum regular dosage of Vitamin D is 4000 IU (international units) per day. In rare cases, specialists will prescribe much higher doses, often intravenous, but off-the-shelf amounts need to be treated as "regular," especially in summer when we tend to get a lot of sunshine which manufactures Vitamin D in our skin. Since your daughter's pills are 5000 IU and somewhat above the recommended maximum, I'd suggest that she cut each in half if possible. If it came in capsules that can't be divided, I'd suggest taking one every other day, an hour after a meal. Do you think that will work for her?