Understanding the right tadalafil dosage for your needs depends on how often you're intimate, your lifestyle preferences, and how you respond to the medication. This guide breaks down each dose—5mg, 10mg, and 20mg—so you can have an informed conversation with your clinician.
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Tadalafil belongs to a class of drugs called PDE5 inhibitors. It works by relaxing the blood vessels in the penis, allowing increased blood flow when you're sexually stimulated—helping you achieve and maintain an erection.
The 36-hour window is why tadalafil is often called "the weekend pill"—one dose on Friday morning can remain effective through Sunday evening.
Onset: 30–60 minutes
Tadalafil begins working within 30–60 minutes for most men
Duration: Up to 36 hours
The longest duration of any FDA-approved ED medication
No food restrictions
Can be taken with or without food—unlike sildenafil
Sexual stimulation required
Like all PDE5 inhibitors, tadalafil requires arousal to work
The longest-lasting ED medication available
Illustrative timeline—individual response may vary
Each dose serves a different purpose. Here's how the three main options compare.
| Dose | 5mg Daily | 10mg As-Needed | 20mg As-Needed |
|---|---|---|---|
| Purpose | Daily use for spontaneity | Standard starting dose | Higher dose for stronger effects |
| When to take | Same time daily | 30–60 min before intimacy | 30–60 min before intimacy |
| Frequency | Every day | Max once per 24 hours | Max once per 24 hours |
| Duration | Continuous coverage | Up to 36 hours | Up to 36 hours |
| Max daily dose | 5mg | 10mg | 20mg |
| Best for | Active, spontaneous intimacy | First-time users, less frequent use | Men needing stronger effects |
| Learn more | Daily Guide | 10mg Guide | 20mg Guide |
Not sure which dose is right for you? Our clinicians will help determine the best starting point based on your health profile.
Dose
5mg
Type
Daily
Coverage
Continuous
A 5mg daily dose of tadalafil is FDA-approved for daily use. You take a low-dose tablet every day at roughly the same time, regardless of when intimacy might occur—no planning, no timing, no waiting.
View Full Daily Cialis GuideThe Standard Starting Dose
10mg As-Needed
The most commonly prescribed starting dose. Take it when you need it, with a 36-hour window of effectiveness that gives you flexibility without daily commitment.
Dose
10mg
Type
As-Needed
Window
36 hours
Tadalafil 10mg is the most commonly prescribed starting dose for as-needed use. Take it approximately 30–60 minutes before planned intimacy, and the effects can last up to 36 hours—giving you the freedom to be spontaneous without the pressure of timing.
View Full 10mg GuideDose
20mg
Type
As-Needed
Window
36 hours
Tadalafil 20mg is the maximum FDA-approved dose. It's prescribed for men who don't respond adequately to the standard 10mg dose. It should only be used under clinician supervision.
View Full 20mg GuideTaking tadalafil correctly helps ensure the best results. Here's what you need to know.
Take as-needed doses 30–60 minutes before planned intimacy. For daily dosing, take at the same time each day.
Can be taken with or without food. Unlike sildenafil, tadalafil is not affected by high-fat meals.
Moderate alcohol (1–2 drinks) is generally safe. Excessive alcohol may increase side effects and reduce effectiveness.
Do not take with nitrates or combine with other ED medications. Never exceed the prescribed dose.
The right dose depends on several personal factors. Your prescribing clinician will consider your health history, lifestyle, and how you respond to the medication.
Important: Never adjust your dose without consulting your clinician. If you feel your current dose is too strong or not strong enough, reach out to discuss your options.
Discuss with a ClinicianFrequency of Intimacy
Daily (2+ times/week) → 5mg daily. Less frequent → 10mg or 20mg as-needed.
Response to Medication
10mg not working → clinician may increase to 20mg. Working but want spontaneity → consider switching to daily.
Health Considerations
Age, liver/kidney function, and other medications all factor in. Your clinician determines the safest starting point.
Clinical Assessment
Your clinician reviews your health profile and makes a personalized recommendation. This isn't a decision you need to make alone.
Most clinicians recommend trying a dose at least 4–6 times before deciding it doesn't work. ED medication effectiveness can vary from one use to the next based on stress, diet, alcohol consumption, and other factors.
Answers to the most common questions about tadalafil dosing.
Our licensed clinicians can help you understand which dose might be right for you based on your health profile and lifestyle needs. Start your free, confidential consultation today—no commitment, no charge if you're not a candidate.
Every patient is reviewed by a US-licensed physician who evaluates your medical history to ensure the medication is appropriate and safe for you.
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