From simple queries to complex problems, IDNLearn.com provides reliable answers. Join our knowledgeable community to find the answers you need for any topic or issue.

The nurse has seen a client multiple times for vague complaints of headache, double vision, and hair loss. The client reports she has been taking high doses of supplements for several years. After reviewing her list, the nurse recognizes that the cause of the client's complaints might be which of the following?
- thiamin.
- lutein
- vitamin A.
- niacin