For Stronger and Longer Fingernails, think ZIP! Z stands for Zinc. Zinc is also good for fighting the common cold. If you can stand it, let a tablet dissolve under your tongue. It can be a bit bitter.
The I in ZIP stands for Iron. Make sure you get enough Iron. Many women suffer from iron deficiencies. No wonder we have trouble growing out our fingernails and maintaining their length.
P stands for Protein and I know that's a word you're familiar with. Make sure you're getting enough of it and then watch those fingernails grow!