ED drugs all work similarly and therefore share potential side effects of: Mild reduction in blood pressure levels (caused by their effects on smooth muscle tissue and blood flow) Mild headaches (associated with all ED drugs) Dizziness Muscle aches or back pain Stuffy nose Facial flushing Vision issues, including temporary blurred vision and blue-tinted vision Digestive issues, ranging from diarrhoea to indigestion, and bloating (can be worsened by consuming alcohol, caffeine, carbonated drinks, and dairy products) These side effects typically occur while the medication is active in the body, however in some cases it is possible for side effects to linger for slightly longer than the drug. It’s important to pay attention to these side effects, particularly if you have cardiovascular health conditions. If you use nitrates or other medications to treat hypertension, the lowered blood pressure caused by ED medications can be dangerous. That’s why it’s important to always provide honest, accurate answers on your questionnaire and during conversations with your hub.health doctor.