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Cialis Works but the Erection Goes Away: Why Tadalafil May Not Solve Maintenance

Written by ED Cost Calculator Editorial Team · Editorially reviewed under our Editorial Policy · Last updated September 6, 2026

Review status: Editorial review completed for source quality, medical-claim wording, and clarity. No clinician medical-review claim is made unless a named qualified reviewer appears on this page. Medical Review Policy.

Tadalafil can improve erectile response for a long window, but it does not guarantee that an erection will stay rigid. If erections still fade, review stimulation, anxiety, alcohol, vascular disease, neurologic factors and the treatment regimen itself. Longer drug duration is not the same as continuous erection maintenance. Source: DailyMed tadalafil label

Cialis Works but the Erection Goes Away: Why Tadalafil May Not Solve Maintenance treatment guide illustration

Safety: Do not increase doses, combine ED medicines, or stop prescribed treatment based on this page. Nitrates are contraindicated with PDE5 inhibitors, and prolonged erections require urgent medical attention.

Quick decision table

Observation	What it does — and does not — mean
Long tadalafil window	Drug remains available; it does not create a permanent erection
Erection fades	May involve stimulation, vascular or psychological factors
Daily tadalafil	Changes dosing pattern, not the need for arousal
Alcohol	Can impair erection quality
Persistent failure	May justify different treatment mechanism

The 36-hour window is often misunderstood

Tadalafil can facilitate erections during a long period after a dose, but only with sexual stimulation. The window does not mean an erection should persist for 36 hours. Source: DailyMed tadalafil label

Maintenance problems can point beyond timing

If rigidity fades despite adequate arousal and correct use, the clinician may consider vascular health, neurologic disease, medication effects or other causes.

Daily tadalafil is not automatically stronger

Daily dosing changes convenience and steady exposure. It does not guarantee better firmness for every patient.

Psychological and physiological causes can overlap

An early loss of rigidity can increase performance pressure, which can then make the next attempt harder. This does not exclude vascular or medical contributors.

Non-oral options change the mechanism

Vacuum devices and intracavernosal injections can support erections through different mechanisms when PDE5 support is insufficient.

Related treatment decisions

Why “not working” needs a structured review

What to document before the next appointment

How clinicians think about the next treatment step

When poor response deserves a broader health evaluation

A better way to judge whether the next step is working

Frequently asked questions

Does Cialis keep an erection for 36 hours?

No. The drug can support erectile response during that window; it should not cause a continuous erection.

Can daily Cialis fix erection maintenance?

It may improve convenience for some patients, but maintenance problems can have several causes.

Does alcohol matter with Cialis?

Yes. Larger amounts can worsen erectile function and increase dizziness or low blood pressure.

What if tadalafil helps only a little?

The prescriber can review dose, timing, underlying health and alternative therapies.

Sources

Your current treatment is only one part of the picture

For Cialis Works but the Erection Goes Away: Why Tadalafil May Not Solve Maintenance, document exactly what “not working” means, how the treatment was used, whether the response changed over time, side effects, and any medical or surgical factors that could alter the next step.

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