Usually there is no dependence on tadalafil in older people, and this drug works only with sexual stimulation. Tadalafil is a selective, reversible inhibitor of cyclic guanosine monophosphate-specific phosphodiesterase 5, and is mainly used to treat erectile dysfunction. In most cases, older adults who take this medication will not become dependent. Taking this medication will only work if you are sexually stimulated. If the patient is not sexually stimulated after taking the drug, it will not work. Tadalafil is contraindicated in the elderly if they are allergic to the drug, and if there are also diseases such as unstable angina and refractory hypertension. Some patients experience adverse reactions such as headache, indigestion and nausea after using the drug. In conclusion, the elderly must use tadalafil under the guidance of a doctor, do not use the drug on their own, so as not to delay the condition.