Nowadays, It is observed that people are more health conscious taking more regular health supplements. Moreover, more drug companies are involving in the production of health supplements.
a) The demand of health supplements would increase. The equilibrium price would increase and equilibrium quantity would increase too.
b) The supply of health supplements would increase. The equilibrium price would decrease and equilibrium quantity would increase.
c) When both the demand and supply shifts to the right, the equilibrium price may increase or decrease and the equilibrium quantity increases. If it is observed that eventually the equilibrium price decreases, then the increase in supply was higher than the increase in demand.