PDE5 inhibitor with a much longer duration of action than sildenafil — sometimes called "the weekend pill" — also approved at a low daily dose for ongoing use and for BPH symptoms.
10-20 mg as needed, or 2.5-5 mg once daily for continuous use
Typical cycle length
As needed or ongoing (daily-dose form)
BioHack Track models Tadalafil (Cialis) at a half-life of 17.5 hours, so every dose you log is decayed against that curve and the app shows estimated active levels — not just what you typed.
No approved product cited
No FDA-approved product for this compound is cited on this page, and no approved human dose is quoted. Treat the range below as research and community practice rather than a prescribed dose.
Reconstitution
Oral tablet; no reconstitution needed.
Storage
Store at room temperature.
Cautions
Prescription medication. Same nitrate interaction warning as other PDE5 inhibitors; its long half-life means side effects (headache, back pain, flushing) can also linger longer.
Track Tadalafil (Cialis) in BioHack Track. Half-life, dose range and route come
pre-filled from this library — log a dose and the app counts your vial down, models what is
in your system, and puts it on the same chart as your labs and body composition.
Evidence Check asks 10 questions about every compound. For Tadalafil (Cialis) it can answer 1 of them, from the papers we hold — graded by how strong the study design is, not by whether the findings are flattering. These are the same verdicts the app gives.
Strongest EvidenceLibido
Meta-analyses or systematic reviews exist — the highest grade of evidence there is, whatever they conclude. Read them.
Tamsulosin plus Tadalafil compared with Tamsulosin alone for benign prostate hyperplasia in patients with or without erectile dysfunction: a meta-analysis and meta-regression of randomized controlled trialsMeta-Analysis · World J Urol · 2025 · PMID 40349279
Discontinuation Rates of Tadalafil Alone and in Combination with a-Blockers in the Treatment of Male Lower Urinary Tract Symptoms with or without Coexisting Erectile Dysfunction: A Systematic Review and Meta-AnalysisMeta-Analysis · Int J Clin Pract · 2022 · PMID 36419863
Chinese herbal medicine combined with tadalafil for erectile dysfunction: a systematic review and meta-analysisMeta-Analysis · Andrology · 2020 · PMID 31464074
Research references only. Not medical advice, and not a recommendation to take anything.
Look up the research
These open a search of each database for Tadalafil (Cialis) — they are not citations, and nothing here is evidence for any particular dose. The same links are in the app.
12 papers naming Tadalafil (Cialis) in the title, drawn from PubMed and limited to reviews, meta-analyses and trials. Each was checked against PubMed’s own record for its title, journal and year. This is a starting point, not an evidence review — nothing here is offered as support for the dose range above, and the list is not exhaustive. See the editorial policy.
The half-life, route and dose range on this page are compiled from published
pharmacokinetic literature, manufacturer and product monographs where one exists, and the
ranges commonly reported in clinical and research use. They are kept as a range
rather than a single figure because that is what the sources actually support — a
half-life varies with route, formulation and the person.
These are not citations, and this page is not a review of the evidence. Where a
number matters to you, follow the database links above and read the source. We say so
plainly rather than dressing a compiled reference up as one.
Nothing on this page has been reviewed by a named clinician. It is a reference for
people already tracking a protocol, not a recommendation to start one.
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Last updated ·
Corrections: support
General reference compiled for use
inside the app, not medical advice and not a recommendation to take anything. Dose ranges are
what is commonly discussed, not a prescription. Talk to a qualified healthcare professional.