A patient asks the nurse about taking megadoses of vitamin C to improve her immunity to colds. "It's just a vitamin, right? What can happen?" Which responses by the nurse are correct?
- "Megadoses of vitamin C can cause nausea, vomiting, headache, and abdominal cramps."
- "Keep in mind that if you suddenly stop taking these megadoses, you might experience symptoms similar to scurvy."
-"Studies have shown that vitamin C has little value as prophylaxis for the common cold."
- "Vitamin C acidifies the urine, which can lead to the formation of renal stones."