A client with suspected vitamin C toxicity presents to the ED. Which manifestations of toxicity would the nurse expect in this client?

Select all that apply.
  1. muscle weakness
  2. halos around objects
  3. occult rectal bleeding
  4. dry mucous membranes
  5. increased estrogen levels
Numbers 3 and 5 are correct.
Rationale: Vitamin C toxicity causes occult rectal bleeding and increased estrogen levels. Muscle weakness is a sign of vitamin D toxicity. Halos around objects do not occur with vitamin C toxicity. Dry mucous membranes may occur with vitamin A toxicity.