Drugstore in Another World: The Slow Life of a Cheat Pharmacist

One day, a corporate slave, Reiji, suddenly got transported to another world. He made the best of his skills to make better potions which earned him lots of money and with that money, made a drugstore! An Elf who has trouble aiming with his bow? Give him some eye-drops! A Dragon who always let breathes out fire unintentionally?