Viagra® has been shown to successfully treat ED in many men. However, there are some health conditions and medicines that should not be taken with Viagra®. Your GP or pharmacist will ask you about these.
If you experience chest pain, nausea, or any other discomfort during sex or an erection that lasts longer than four hours, seek immediate medical help1.
References: 1. Viagra NZ Data Sheet. Available at www.medsafe.govt.nz. Accessed Sept 2026