Displaying 11 results of Tadalafil Stable Isotopes Tadalafil stable isotopes are non-radioactive forms of the drug Tadalafil, which is primarily used for the treatment of erectile dysfunction and pulmonary arterial hypertension. Stable isotopes of Tadalafil are useful in pharmacokinetic studies and drug metabolism research. They are also used in clinical trials to monitor the absorption, distribution, and elimination of the drug in the body. These isotopes are highly pure and have well-defined isotopic compositions, making them ideal for use in sensitive analytical techniques such as mass spectrometry.