Sexual Wellness

Tadalafil Dosage Guide: Strengths, Timing and Titration

Every Tadalafil strength, the standard titration path, timing rules and what to do about a missed dose.

4 min read Updated 2026-01-15Reviewed against manufacturer prescribing information

Tadalafil is supplied in 2.5 mg, 5 mg, 10 mg, 20 mg. The standard approach is 10 mg on demand, or 2.5–5 mg once daily for spontaneity

Strength and use

2.5 mgStarting or low-dose maintenance
5 mgStandard maintenance dose
10 mgEscalation dose where response is partial
20 mgEscalation dose where response is partial

Titration path

  1. 1

    Step 1: initiate

    Begin at the lowest useful strength of 2.5 mg.

  2. 2

    Step 2: assess

    Review after the onset window of 30–120 minutes.

  3. 3

    Step 3: escalate

    Move up one strength only if the response is partial and tolerance is good.

  4. 4

    Step 4: maintain

    Hold at the lowest effective dose for erectile dysfunction and benign prostatic hyperplasia and review periodically.

Key takeaways

  • Standard dosing: 10 mg on demand, or 2.5–5 mg once daily for spontaneity
  • Dosing interval: up to 36 hours.
  • Never double up after a missed dose: resume the normal schedule.
  • Store 15–30 °C, dry, original blister to protect potency across the shelf life.

Missed doses and adherence

If a dose is missed and the next one is close, skip it. Doubling increases the risk of back pain without improving outcomes. Blister packaging and clear dispensing labels measurably improve adherence on film-coated tablet lines.

Tadalafil at a glance

Drug classPDE5 inhibitor
Common brandCialis
Licensed useerectile dysfunction and benign prostatic hyperplasia
Available strengths2.5 mg, 5 mg, 10 mg, 20 mg
Dosage formfilm-coated tablet
Typical onset30–120 minutes
Duration / dosing intervalup to 36 hours
Storage15–30 °C, dry, original blister

Tadalafil: frequently asked questions

What is Tadalafil used for?+

Tadalafil is a PDE5 inhibitor used for erectile dysfunction and benign prostatic hyperplasia. It is available in 2.5 mg, 5 mg, 10 mg, 20 mg as a film-coated tablet.

How long does Tadalafil take to work?+

Onset is typically 30–120 minutes, and the effect lasts up to 36 hours.

What are the most common Tadalafil side effects?+

The most frequently reported effects are back pain, myalgia, headache, reflux, nasal congestion. Most are mild and dose-related.

Who should not take Tadalafil?+

Tadalafil should be avoided in nitrate users and men with uncontrolled hypotension. A prescriber should review the full medicine list before initiation.

Is generic Tadalafil as effective as Cialis?+

Yes, when it is manufactured to GMP standards and proven bioequivalent. The active molecule and strengths are identical; documentation quality is what differentiates suppliers.

Does ShiningRX supply Tadalafil to my country?+

We supply pharmacies, clinics, hospitals, distributors and consumers across the USA, UK and Australia, with express air freight typically clearing in 7–14 working days.

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