Tadalafil vs Sildenafil: Which Works Better?

When it comes to ED medications, there isn’t a greater debate than with tadalafil vs. sildenafil. They are very similar, but they do have their differences. These differences can often sway a person’s decision when it comes to treatment. Clinical studies have indicated that sildenafil and tadalafil have similar effectiveness and best course of treatment generally comes down to personal preference of the patient. PubMed

Tadalafil vs. Sildenafil: Differences in Pharmacology

PDE5 inhibitors work similarly to one another and generally vary in other areas. Tadalafil and sildenafil both enable smooth muscle relaxation in the penis to facilitate the inflow of blood. Neither of these medications increase sex drive.

Tadalafil and Sildenafil: How Quickly do they Work?

Tadalafil and Sildenafil generally take 30-60 minutes to take effect. The speed at which they work can vary greatly among individuals. Generally, the peak blood concentration of sildenafil occurs within 60 minutes of taking the medication. The peak blood concentration of tadalafil occurs around 2 hours after it is taken. It’s important to keep in mind that when looking at peak blood concentration, it does not always mean the medication fully takes effect at that time. Generally speaking, tadalafil has a longer duration of effectiveness.

Tadalafil vs Sildenafil: Which Lasts Longer?

Other aspects of the two medications that differ are the timing and food. Tadalafil can generally be taken at a wider window of time before sexual activity compared to sildenafil. The effects of tadalafil generally last for 36 hours.

Unlike sildenafil, tadalafil can be taken with food. This generally should not impact the effectiveness of tadalafil as much compared to sildenafil.

Tadalafil: Its effects can be felt for up to 36 hours after it’s taken.

Because Tadalafil’s half life is approximately 17.5 hours, vs. about 4 hours for Sildenafil, it is often referred to as the “weekend pill.” Although the effects of a dose can last for up to 36 hours, an erection will not persist for this length of time.

A mere 17.5 hour half life for Tadalafil means that sexual stimulation occurs within this time window for the drug to be effective.

Tadalafil vs Sildenafil: Does Food Matter?

The effect of food on absorption of the two drugs is different.

Sildenafil Absorption:

A high fat meal can decrease the rate of absorption of Sildenafil and also lower the peak levels of the drug.

Tadalafil Absorption:

Food will have little effect on the absorption of Tadalafil.

So, when a high fat meal delays the time of Absorption of Sildenafil and lowers its Peak levels, Tadalafil may be a better alternative.

Tadalafil vs Sildenafil: Side Effects

Headaches are the most common side effect of both medications.

For Sildenafil:

Other side effects include:

• Flushing
• Heartburn
• Stuffy nose
• Dizziness
• Sensitivity to light
• Blurred vision

Some users report experiencing a blue color tinge as well as other changes in color perception.

Tadalafil Side Effects

The most common side effects of tadalafil include:

• Nasal congestion
• Muscle aches
• Headaches
• Indigestion
• Flushing

In studies, direct comparisons of users of the two drugs reported that users of tadalafil reported side effects more than users of sildenafil.

Because of its longer half-life, side effects of tadalafil will be long-lasting as well.

Tadalafil vs Sildenafil: Which Is More Effective?

Neither drug is objectively better than the other.

A study completed in 2024 assessed the comparative effectiveness of tadalafil 5 mg and sildenafil 25 mg when administered once daily for the treatment of erectile dysfunction. The researchers noted that both tadalafil and sildenafil improved erectile function scores and concluded that the two medications, in this regard, were identical.

A different 2014 study evaluated the impact of regular (daily) sildenafil and tadalafil and the impact of “as-needed” (i.e., only prior to anticipated sexual activity) sildenafil on erectile function and orgasmic function and found that all three interventions improved erectile function and orgasmic function after three months of treatment, with tadalafil and sildenafil yielding similar results.

Ultimately, the response to a particular medication is likely to drive the preference toward tadalafil or sildenafil.

Tadalafil vs Sildenafil: Which Is Better for Frequent Sex?

From a convenience standpoint, tadalafil is probably a better option since its effects last longer.

Tadalafil has an effect for up to 36 hours. Also, the once-daily nature of the formulation makes it convenient for use.

Sildenafil, on the other hand, is better if you don’t engage in sexual activity on a very frequent basis since it only works for a few hours.

Ultimately, preference is probably going to dictate which option is better.

Tadalafil vs Sildenafil: Drug Interactions

Tadalafil vs sildenafil are probably going to impact drug interactions similarly.

For safety, both medications should not be taken with any medication containing nitrates (e.g., isosorbide dinitrate, isosorbide mononitrate, nitroglycerin, pentaerythritol tetranitrate) since they can cause a significant and profound decrease in blood pressure.

Moreover, both medications should not be taken with “poppers” (nitrite inhalants).

There are drug interactions between tadalafil and sildenafil with alpha-blockers and several other classes of medications. It is important to disclose all medications and supplements to your healthcare provider.

Does Either Medicine Cure Erectile Dysfunction

Neither medication provides a “cure” for ED.

Both of these medications work by improving blood flow to help you achieve an erection when sexually stimulated.

If you find a medication is less effective, do not increase the dose. Talk to your healthcare provider to review other treatment options.

Tadalafil vs Sildenafil: Which Should You Choose?

Tadalafil may be a better option if:

• You want a medication that allows a longer window of opportunity for sexual activity.
• Want an optional, daily dose medicine
• Don’t want symptoms to be dependent on meals

Sildenafil might be an option if:

• You like the idea of taking a medicine only when you need it
• You don’t want to think about taking a medicine at a certain time during the day
• It works for you without nasty side effects
• Neither is better than the other.

Final Words

When comparing tadalafil vs sildenafil, there are several different circumstances to take into account. For treatment window, tadalafil takes a good deal of time to compare to sildenafil. Sildenafil absorption is enhanced by food, while tadalafil is not affected by food.

In regards to the improvement of erectile function and efficiency, both medications have been biomedical equivalents.

Depending on the user’s individual circumstances, such as side effects, other medications used, the length of time for which the user wants an erection, and the user’s normal sexual routine, both tadalafil and sildenafil have been shown to improve erectile function.

Sources

• PubMed – Comparative study of daily tadalafil and sildenafil
• PubMed – Regular sildenafil compared with tadalafil