Can a Chazzan with dry vocal chords take saliva inducing nose drops and pills on Shabbos and Yom Tov? What about on Yom Kippur?
Many poskim permit a healthy person to take vitamins on Shabbos because it only ensures that he stays healthy. Similarly if he only wants to keep his vocal cords in good shape he can take the saliva inducing nose drops and pills on Shabbos and Yom Tov. Many say that a teaspoonful of honey does wonders!
O:CH 428:37 & Mishnah Berurah 120, Igros Moshe O:CH 3:54, Tzitz Eliezer 14:50, Mishnah Halochos 4:51.