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Probe · tadalafil · 3 min read

What as-needed Cialis dose does the US label start at?

Ten milligrams. As-needed Cialis on the US label starts at 10 mg before sexual activity. After a real read, the writer may raise that to 20 mg or drop it to 5 mg. Usual frequency is one tablet a day. Daily 2.5 mg and 5 mg are other bottles, not a split of this 10 mg.

Medically reviewed by Dr. Mateo Ruiz, MD - Clinical pharmacology, Barcelona

Last reviewed

Updated

01Is daily 2.5 or 5 mg a cheaper 10 mg?

Forest-green still life: two tablets, smaller and larger, on stepped mint shelves

Daily 2.5 mg, which may rise to 5 mg, is a trough taken at about the same hour each day. It is not a discount tier of 10 mg as needed. BPH uses 5 mg daily. See daily versus this 10 mg PRN.

Do not split the 10 mg film coat to imitate those bottles.

02When is 20 mg the next as-needed step?

Twenty milligrams is the labelled step up after 10 mg has had a real read: arousal present, no high-dose alcohol, no extra PDE5, once in 24 hours. Two rushed tries after a lot of wine tell you very little.

If headache or lumbar ache already dominate at 10 mg, 20 mg will not be kinder. See myalgia 12 to 24 hours.

03What as-needed dose does the US label start?

Ten milligrams before planned sex is the as-needed start for most men. Not more than once a day. Pages that treat 5 mg as the usual first PRN tablet are mixing the daily bottle with this line.

This vault follows that 10 mg start. See the tadalafil vault.

04What do two thin weekends fail to prove?

Two thin weekends after wine and no sleep fail to prove 10 mg is empty. They also fail to prove a class switch is due. The label wants a real read before 20 mg.

Failed 20 mg with a clean list is a workup, not a third brand from a cart.

05When is 5 mg the as-needed step down?

Five milligrams as needed is the labelled step down when 10 mg is too much. It is also the as-needed start when creatinine clearance is 30 to 50 mL/min. That renal row is its own probe.

Kitchen halves of a 10 mg film coat are not that 5 mg tablet. US Cialis tablets are not scored.

06Does 20 mg change the once-a-day cap?

Twenty milligrams does not buy a second swallow the same day. Usual as-needed frequency stays one tablet in 24 hours for most men.

Ketoconazole or ritonavir caps as-needed use at 10 mg not more than once every 72 hours. That is not a 20 mg path. See the keto ceiling.

Sources

  1. DailyMed CIALIS (tadalafil) Dosage and Administration 2.1: as-needed start 10 mg; may be 20 mg or 5 mg

Checked against the current label and reviewed by Dr. Mateo Ruiz. See Probe, Assay, Glow-check, Seal.

Vault consult

Answers follow the U.S. Cialis label.

Bernat X. Retail copy said start at 5 mg. Is that the PRN start?

Vault reply

As-needed use starts at 10 mg. Five milligrams as needed is a step down, or a renal start. Daily 5 mg is a different bottle.

Olga K. If 10 mg felt thin twice, do we jump to 20?

Vault reply

After a clean read - arousal, limited alcohol, once in 24 hours - 20 mg is the labelled next PRN step. Two rushed tries after wine are not that read.

Dario F. Can I split 10 mg to make 5 mg?

Vault reply

US Cialis tablets are not scored. Fragments are not the labelled 5 mg tablet. Ask for the 5 mg NDC if that is the dose.

Before you start, stop, or change any medicine, speak with your prescriber or pharmacist - they hold your chart, this vault card does not. Open the vault disclaimer.