Sildenafil vs. Tadalafil: Which ED Treatment Online Is Better for You?

If you are looking for an erectile dysfunction treatment online, sildenafil and tadalafil are two of the most common options to discuss with a licensed clinician.

Both medicines belong to a group called PDE5 inhibitors. In simple terms, they help increase blood flow to the penis when you are sexually aroused. Neither medicine creates an automatic erection, and neither one increases sexual desire on its own.

So, which is better?

There is no single answer. Sildenafil may suit you if you want a shorter-acting option for planned sexual activity. Tadalafil may be a better fit if you prefer a longer window or want the option of daily dosing.

Here is how they compare.

Sildenafil and tadalafil at a glance

A systematic review comparing the two treatments found similar overall effectiveness and safety. The main differences involve timing, duration, food, and side effects rather than one medicine being universally stronger. Read the research review.

Sildenafil: a shorter window for planned timing

Sildenafil is often taken about 1 hour before sexual activity. Many people notice an effect within 30 to 60 minutes, although timing can vary based on your health, dose, food, and other medicines.

Its effects generally last around 4 to 6 hours. That may be useful if you prefer a treatment that is active for a shorter period and tied to a specific occasion.

Sildenafil may suit you if you:

• Prefer an as-needed medication
• Usually plan sexual activity in advance
• Want a shorter duration of action
• Do not mind timing your dose around meals
• Prefer a familiar tablet format

Sildenafil may work more slowly if you take it after a high-fat meal. A large or heavy meal can delay absorption, so your clinician may recommend taking it on an empty stomach or with a lighter meal.

Some people also experience temporary visual changes, such as increased light sensitivity or a blue tint to their vision. These effects are usually temporary, but any sudden vision change requires prompt medical attention.

Tadalafil: a longer window and more flexibility

Tadalafil usually begins working within about 30 minutes to 2 hours. Its effects may last up to 36 hours, although this does not mean you will have an erection for that entire time.

Instead, tadalafil gives you a longer period during which an erection may be possible with sexual stimulation. This can reduce the need to plan sexual activity around a narrow dosing window.

Tadalafil may suit you if you:

• Prefer more spontaneity
• Have changing schedules or meal times
• Want a longer period of effectiveness
• Prefer an option that is less affected by food
• Are interested in daily dosing, if clinically appropriate

Tadalafil is also available as a lower daily dose for some patients. Daily tadalafil is taken at the same time each day, regardless of when sexual activity occurs. Your clinician decides whether daily or as-needed treatment is appropriate for you.

Because tadalafil stays in the body longer, side effects may also last longer for some people. Back pain and muscle aches are reported more often with tadalafil than sildenafil.

Which medication works faster?

Sildenafil and tadalafil can both begin working within about 30 minutes for some people. Sildenafil is commonly taken about 1 hour before sexual activity. Tadalafil may be taken earlier because its effect lasts much longer.

Individual response varies. The medication may not work as expected if you take it too soon, take more than prescribed, drink heavily, or do not allow enough time for sexual stimulation.

If your first dose does not produce the result you expect, do not take an extra dose without speaking with your clinician. Your care team may recommend a dosage adjustment or a different treatment approach.

Which one lasts longer?

Tadalafil lasts longer.

• Sildenafil usually provides a 4 to 6 hour window.
• Tadalafil may provide a window of up to 36 hours.

The longer duration does not mean tadalafil causes a continuous erection. You still need sexual arousal. It simply allows more flexibility around timing.

For some people, this reduces pressure and planning. For others, a shorter-acting medicine may feel more comfortable. Both preferences are reasonable.

Side effects: what should you expect?

Sildenafil and tadalafil have several side effects in common. These may include:

• Headache
• Facial flushing
• Nasal congestion
• Indigestion
• Dizziness
• A temporary drop in blood pressure

Most side effects are mild and temporary. Still, you should tell your clinician if a side effect is severe, persistent, or interferes with your daily life.

Sildenafil is more commonly associated with temporary visual changes. Tadalafil is more commonly associated with back pain or muscle aches.

The best option for you may depend on which side effects you are more likely to tolerate, your medical history, and the other medications you take.

Food and alcohol interactions

Food

Sildenafil can be affected by a high-fat meal. The medication may take longer to work or feel less predictable after a heavy meal.

Tadalafil is not significantly affected by food. You can usually take it with or without meals, as directed by your clinician.

Alcohol

Light drinking may be tolerated by some people, but alcohol can make erectile dysfunction worse. It may also increase side effects such as dizziness, flushing, headache, and lightheadedness.

Avoid heavy drinking with either medication. Large amounts of alcohol can lower your blood pressure and make it harder to achieve or maintain an erection.

If you take blood pressure medication, alpha-blockers, or other medicines that lower blood pressure, tell your clinician before treatment.

Can sildenafil and tadalafil be used together?

ShopMedRx offers sildenafil, tadalafil, and certain prescription combination options. These may include compounded products with more than one active ingredient.

However, you should never combine sildenafil, tadalafil, or another ED medication on your own. Taking more than one PDE5 inhibitor without specific clinical instructions may increase the risk of dangerously low blood pressure and other side effects.

A licensed clinician must review your health information and decide whether a single-ingredient or combination treatment is clinically appropriate for you. The product you receive may differ from the website image or description based on your prescription.

Important safety information

Do not take sildenafil or tadalafil with nitrates, such as nitroglycerin or isosorbide. This combination can cause a dangerous drop in blood pressure.

You should also tell your clinician if you have:

• Heart disease or a history of heart attack
• A recent stroke
• Low or uncontrolled blood pressure
• Severe liver or kidney disease
• A history of sudden vision loss
• Current use of alpha-blockers or blood pressure medicines
• Any other prescription, over-the-counter, or recreational drugs

Seek emergency medical care for:

• An erection lasting longer than 4 hours
• Sudden vision loss
• Sudden hearing loss
• Chest pain
• Severe dizziness or fainting
• Signs of a serious allergic reaction

ED can also be connected to diabetes, cardiovascular disease, medication side effects, stress, sleep problems, or hormone changes. A clinician can help determine whether further evaluation is appropriate.

ED treatment online through ShopMedRx

ShopMedRx provides sexual health telehealth with a simple online process:

• Complete the online intake. Answer questions about your health, symptoms, medications, and treatment goals.
• A licensed clinician reviews your information. Treatment is prescribed only if it is clinically appropriate for you.
• Choose whether to continue. You are not charged if treatment is not appropriate. If you receive a prescription, you can review the available option and pricing before deciding.
• Receive discreet delivery. Medication ships from a licensed U.S. pharmacy in free, discreet, unmarked packaging.

ShopMedRx does not require insurance. There are also $0 membership or subscription fees. You pay for medication only if a clinician prescribes it and you decide to continue.

Programs start at $79 per 4 weeks for daily tadalafil. Combination and liposomal options may cost more, depending on the prescription. Pricing is shown upfront.

You can also message your care team through your account at no additional charge. Use messaging to ask questions, report side effects, or discuss a possible dosage adjustment. You can cancel online without retention scripts.

The bottom line

Sildenafil may be a good fit if you want a shorter-acting, as-needed treatment and can plan around your dose.

Tadalafil may be a good fit if you want a longer window, less concern about food, or the option of daily dosing.

Neither is automatically better for everyone. Your medical history, current medications, schedule, side-effect concerns, and treatment goals all matter.

If you are considering an erectile dysfunction treatment online, start with an online consultation. A licensed clinician can review your information, explain your options, and prescribe treatment only if it is appropriate for you.

Explore ShopMedRx sexual health options

Sources

• Direct comparison of tadalafil with sildenafil: systematic review and meta-analysis
• The differences between PDE5 inhibitors for erectile dysfunction
• Mayo Clinic: Erectile dysfunction treatment and medicines

*Compounded drug products are not FDA approved. The FDA does not evaluate compounded products for safety, effectiveness, or quality. ShopMedRx does not manufacture compounded medications. Compounded medications are manufactured by 503A pharmacies. Prescription products require an online evaluation with a licensed clinician and are dispensed only if prescribed. Individual results vary and are not guaranteed.*