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Condition

Erectile dysfunction (ED)

Written by the Verra clinical team · Medical review pending · Last updated Oct 4, 2026

Quick answer

Erectile dysfunction means having trouble getting or keeping an erection firm enough for sex on a regular basis. It is common, especially with age, and often linked to blood flow, hormones, stress or medications. Prescription options such as sildenafil and tadalafil help many men, and a licensed provider decides if they are safe for you.

Key takeaways

  • ED is common and treatable in many cases.
  • It can be an early sign of heart or blood vessel disease, so a health review matters.
  • Oral medications are not safe with nitrates.

Overview

Occasional erection problems are normal. ED is when difficulty happens often enough to affect your sex life or confidence.

Symptoms

Trouble getting an erection, trouble keeping one, or reduced sexual desire.

Causes

Reduced blood flow (from diabetes, high blood pressure, high cholesterol or smoking), low testosterone, nerve problems, some medications, alcohol, stress, anxiety and relationship factors.

How it is diagnosed

A provider reviews your symptoms, medical history, medications and blood pressure. Lab tests such as glucose, lipids or testosterone may be suggested.

When to see a doctor in person

Seek in-person care for chest pain, an erection lasting more than 4 hours, a sudden change after pelvic injury, or if you have not had a recent heart check and have risk factors.

Treatment options at Verra

A licensed provider decides whether a treatment is appropriate after your visit.

Questions

What is erectile dysfunction (ED), and when should I seek care?

Erectile dysfunction (ED) means regularly having trouble getting or keeping an erection firm enough for sex. An occasional problem does not always mean you have ED. Seek care if it keeps happening, causes distress, or starts suddenly. ED can sometimes be a sign of another health condition.

What causes erectile dysfunction (ED)?

Erectile dysfunction (ED) can have physical, emotional, or medication-related causes. Common factors include poor blood flow, diabetes, nerve damage, hormone problems, stress, and anxiety. More than one factor may be involved. A licensed physician can review your symptoms and health history before deciding whether treatment is appropriate.

How is erectile dysfunction (ED) evaluated during a telehealth visit?

An erectile dysfunction (ED) evaluation starts with your symptoms, health history, and medication list. A licensed physician in your state decides whether online care is appropriate. You may need a video visit, blood pressure reading, lab tests, or an in-person exam before a treatment decision can be made.

How do sildenafil and tadalafil work for erectile dysfunction (ED)?

Sildenafil and tadalafil treat erectile dysfunction (ED) by helping blood flow into the penis during sexual stimulation. They do not create sexual desire or cause an automatic erection. Results vary. A licensed physician in your state decides whether either medicine is appropriate based on your health and other medications.

How do sildenafil and tadalafil differ for erectile dysfunction (ED)?

For erectile dysfunction (ED), sildenafil is generally taken as needed, while tadalafil may be prescribed as needed or once daily. Tadalafil has a longer window of activity. Results vary. The choice depends on your health, other medicines, preferences, and the instructions for the exact product prescribed to you.

Who should avoid sildenafil or tadalafil for erectile dysfunction (ED)?

Do not use sildenafil or tadalafil for erectile dysfunction (ED) with nitrates, recreational “poppers,” or riociguat. These combinations can cause dangerous drops in blood pressure. Other heart conditions and medicines may also affect safety. A licensed physician in your state must review your health before deciding whether treatment is appropriate.

What side effects can erectile dysfunction (ED) medicines cause?

Erectile dysfunction (ED) medicines such as sildenafil and tadalafil can cause headache, flushing, upset stomach, nasal congestion, or dizziness. Tadalafil may also cause back or muscle pain. Seek emergency care for an erection lasting more than four hours, chest pain, or sudden loss of vision or hearing.

What should I do if erectile dysfunction (ED) medicine does not work?

If your erectile dysfunction (ED) medicine does not help, contact your prescriber rather than taking more. Timing, food, sexual stimulation, stress, and underlying health problems can affect response. Results vary. A licensed physician can review how you are using it and decide whether testing or a treatment change is appropriate.

What should I know about compounded medications for erectile dysfunction (ED)?

Compounded medications for erectile dysfunction (ED) are prepared by a licensed pharmacy for one patient and are not FDA-approved. The FDA does not review them for safety, effectiveness, or quality before marketing. A licensed physician in your state decides whether a compounded option is appropriate for your individual needs.

How do I request erectile dysfunction (ED) care through Verra Health?

You can request erectile dysfunction (ED) care through a Verra Health online or video visit. A licensed physician in your state reviews the visit and decides whether treatment is appropriate. Verra is available in all 50 states and DC. Some states or medications require a video visit.

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Sources

This page is general information, not medical advice. Results vary. Compounded medications are not FDA-approved. Our editorial policy

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