Lately, I am seeing discoloration in my finger nails. I ignored previous symptoms when the nail in my thumb on the left hand turned pale. Now, it is spreading from one nail to another at a much faster rate. All the nails on my left hand are yellow. I am scared of yellow nails and started inquiring about the cause for these yellow nails. People said that it may be caused because of fungal infection on my nails. I am always afraid of taking prescription medicines because of the side effects faced by one of my friends. I have decided to try Zetaclear, a popular nail fungus solution which I hope can clear my yellow nails.