We expect there to be a lower risk of experiencing side effects with a Extra Strength Spray as opposed to oral medication. This is mostly because there is less absorption with the spray and it would be acting at the site of application. However, possible side effects do still exist, such as itchiness or irritation on the scalp. The Triple-Action Spray can also cause rarer side effects, such as: Dizziness Fast or irregular heartbeat Blurred vision or other changes in vision Finasteride can cause other side effects, but we expect the risk to be lower in the spray. They include: Depression Ejaculatory problems Decreased libido Erectile dysfunction Please read the Patient Information Leaflet and Safety Information Page included with your spray for a full list of side effects for each medicine. Consult your doctor before taking the Triple-Action Spray to make sure it’s safe for you to take and does not interact with any medication you’re taking.