Displaying 2 results of Timolol Stable Isotopes Timolol Stable Isotopes are a set of isotopes that have the same number of protons and electrons as Timolol, a medication used to treat high blood pressure and glaucoma. These isotopes are used in scientific research to study the pharmacokinetics and metabolism of Timolol, and can also be used in drug testing and quality control. The stable isotopes of Timolol include carbon-13, nitrogen-15, and deuterium.