Like any prescription medicine, sildenafil and tadalafil — the two active medicines described for HardRx — can cause side effects. Most are mild and well documented, but a small number of symptoms need urgent attention. Here's what to actually expect.
PDE5 inhibitors have been used for a long time and their general side-effect profile is well understood. Commonly reported effects can include:
Likelihood and severity vary from person to person, and this list shouldn't be used to self-diagnose a reaction — if a symptom concerns you, contact your healthcare professional rather than waiting it out or searching for an explanation online.
Illustrative concept diagram, not measured clinical data.
If you need emergency treatment, tell medical staff you've taken a PDE5 inhibitor and approximately when you last took it.
Your dose, your overall health, other medicines you're taking, and individual sensitivity all play a role. This is another reason the HardRx process includes a physician review rather than a flat, one-size-fits-all prescription — a clinician can weigh your specific risk factors rather than relying on general population statistics.
Don't take an extra dose because side effects seem mild or because you think the medicine "isn't working." Don't combine HardRx with another ED medicine unless specifically told to by your clinician. And don't ignore a serious symptom because it seems embarrassing to report — your prescribing clinician has heard it before.