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Last Updated: April 1, 2026

CLINICAL TRIALS PROFILE FOR TADALAFIL


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505(b)(2) Clinical Trials for tadalafil

This table shows clinical trials for potential 505(b)(2) applications. See the next table for all clinical trials
Trial Type Trial ID Title Status Sponsor Phase Start Date Summary
New Formulation NCT02688387 ↗ A Phase 1 Relative Bioavailability Study of Ambrisentan and Tadalfil Fixed Dose Combination Tablets in Healthy Subjects Completed Covance Harrogate Phase 1 2016-03-18 This study is designed to understand the relative bioavailability (proportion of the administered dose that is absorbed into the bloodstream) of several fixed dose combinations (FDCs) tablets of ambrisentan and tadalafil for further development and to provide pharmacokinetic (PK - what the body does to the drug) data to enable a pivotal bioequivalence (BE - the relationship between two preparations of the same drug in the same dosage form that have a similar bioavailability) study. Depending on formulation work, the study will allow up to 8 new FDCs to be compared with the reference of ambrisentan and tadalafil monotherapies. The study will also evaluate up to 2 of the new formulations, that may be taken in to a BE study, to be tested for any effect on pharmacokinetics of the FDC in both fed and fasted state. This is a single centre, Phase 1, single dose, randomised, open label crossover study with 3 study parts; each study part will have up to a 5 way crossover in healthy subjects. Part 1 of the study will evaluate four formulations of the FDC (ambrisentan 10 milligram [mg] + tadalafil 40 mg) and the reference of the 2 monotherapy components taken concurrently (ambrisentan 10 mg and tadalafil 40 mg) in the fasted stated. If successful formulations are identified in this part of the study, then they will be re-formulated and tested in part 2. If no successful formulations are identified in part 1 of the study, then part 2 will be utilized to look at up to 4 new FDC formulations. However, if only two formulations, or less, are evaluated in part 2 then the FDC formulations may be tested both fed and fasted to assess food effect and part 3 will not be required. If successful formulations are identified in this study part, then up to 2 of these may be tested, for food effect, in Part 3 if not already assessed in this part. Therefore, part 3 is optional and utility is dependent on the results of the previous study parts.
New Formulation NCT02688387 ↗ A Phase 1 Relative Bioavailability Study of Ambrisentan and Tadalfil Fixed Dose Combination Tablets in Healthy Subjects Completed Hammersmith Medicines Research Phase 1 2016-03-18 This study is designed to understand the relative bioavailability (proportion of the administered dose that is absorbed into the bloodstream) of several fixed dose combinations (FDCs) tablets of ambrisentan and tadalafil for further development and to provide pharmacokinetic (PK - what the body does to the drug) data to enable a pivotal bioequivalence (BE - the relationship between two preparations of the same drug in the same dosage form that have a similar bioavailability) study. Depending on formulation work, the study will allow up to 8 new FDCs to be compared with the reference of ambrisentan and tadalafil monotherapies. The study will also evaluate up to 2 of the new formulations, that may be taken in to a BE study, to be tested for any effect on pharmacokinetics of the FDC in both fed and fasted state. This is a single centre, Phase 1, single dose, randomised, open label crossover study with 3 study parts; each study part will have up to a 5 way crossover in healthy subjects. Part 1 of the study will evaluate four formulations of the FDC (ambrisentan 10 milligram [mg] + tadalafil 40 mg) and the reference of the 2 monotherapy components taken concurrently (ambrisentan 10 mg and tadalafil 40 mg) in the fasted stated. If successful formulations are identified in this part of the study, then they will be re-formulated and tested in part 2. If no successful formulations are identified in part 1 of the study, then part 2 will be utilized to look at up to 4 new FDC formulations. However, if only two formulations, or less, are evaluated in part 2 then the FDC formulations may be tested both fed and fasted to assess food effect and part 3 will not be required. If successful formulations are identified in this study part, then up to 2 of these may be tested, for food effect, in Part 3 if not already assessed in this part. Therefore, part 3 is optional and utility is dependent on the results of the previous study parts.
New Formulation NCT02688387 ↗ A Phase 1 Relative Bioavailability Study of Ambrisentan and Tadalfil Fixed Dose Combination Tablets in Healthy Subjects Completed GlaxoSmithKline Phase 1 2016-03-18 This study is designed to understand the relative bioavailability (proportion of the administered dose that is absorbed into the bloodstream) of several fixed dose combinations (FDCs) tablets of ambrisentan and tadalafil for further development and to provide pharmacokinetic (PK - what the body does to the drug) data to enable a pivotal bioequivalence (BE - the relationship between two preparations of the same drug in the same dosage form that have a similar bioavailability) study. Depending on formulation work, the study will allow up to 8 new FDCs to be compared with the reference of ambrisentan and tadalafil monotherapies. The study will also evaluate up to 2 of the new formulations, that may be taken in to a BE study, to be tested for any effect on pharmacokinetics of the FDC in both fed and fasted state. This is a single centre, Phase 1, single dose, randomised, open label crossover study with 3 study parts; each study part will have up to a 5 way crossover in healthy subjects. Part 1 of the study will evaluate four formulations of the FDC (ambrisentan 10 milligram [mg] + tadalafil 40 mg) and the reference of the 2 monotherapy components taken concurrently (ambrisentan 10 mg and tadalafil 40 mg) in the fasted stated. If successful formulations are identified in this part of the study, then they will be re-formulated and tested in part 2. If no successful formulations are identified in part 1 of the study, then part 2 will be utilized to look at up to 4 new FDC formulations. However, if only two formulations, or less, are evaluated in part 2 then the FDC formulations may be tested both fed and fasted to assess food effect and part 3 will not be required. If successful formulations are identified in this study part, then up to 2 of these may be tested, for food effect, in Part 3 if not already assessed in this part. Therefore, part 3 is optional and utility is dependent on the results of the previous study parts.
>Trial Type >Trial ID >Title >Status >Phase >Start Date >Summary

All Clinical Trials for tadalafil

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00050609 ↗ Study of Tadalafil for the Treatment of Diabetic Patients With Symptoms of Upset Stomach and Delayed Stomach Emptying Completed ICOS Corporation Phase 2 2003-02-01 The purposes of this study are to determine whether an experimental drug known as tadalafil can reduce symptoms of dyspepsia (fullness after eating, inability to finish a regular meal, bloating, discomfort or pain in the upper abdomen, belching after meals, nausea, vomiting) in diabetic patients, and/or reduce the amount of time the stomach takes to empty the contents of a standard meal. The safety of tadalafil given once daily for 8 weeks in this population will also be studied.
NCT00050609 ↗ Study of Tadalafil for the Treatment of Diabetic Patients With Symptoms of Upset Stomach and Delayed Stomach Emptying Completed Eli Lilly and Company Phase 2 2003-02-01 The purposes of this study are to determine whether an experimental drug known as tadalafil can reduce symptoms of dyspepsia (fullness after eating, inability to finish a regular meal, bloating, discomfort or pain in the upper abdomen, belching after meals, nausea, vomiting) in diabetic patients, and/or reduce the amount of time the stomach takes to empty the contents of a standard meal. The safety of tadalafil given once daily for 8 weeks in this population will also be studied.
NCT00122499 ↗ A Study to Assess the Efficacy of Tadalafil to Treat Erectile Dysfunction After Radiotherapy of Prostate Cancer Completed Erasmus Medical Center Phase 3 2003-02-01 This study has been designed to evaluate the efficacy and safety of a 20-mg dose of tadalafil administered "on demand" to patients with erectile dysfunction (ED) after external-beam radiotherapy (EBRT) of prostate cancer.
NCT00125918 ↗ PHIRST-1: Tadalafil in the Treatment of Pulmonary Arterial Hypertension Completed ICOS Corporation Phase 3 2005-08-01 The purpose of this study is to evaluate the safety and effectiveness of tadalafil for the treatment of pulmonary arterial hypertension.
NCT00125918 ↗ PHIRST-1: Tadalafil in the Treatment of Pulmonary Arterial Hypertension Completed Eli Lilly and Company Phase 3 2005-08-01 The purpose of this study is to evaluate the safety and effectiveness of tadalafil for the treatment of pulmonary arterial hypertension.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for tadalafil

Condition Name

Condition Name for tadalafil
Intervention Trials
Erectile Dysfunction 54
Benign Prostatic Hyperplasia 19
Pulmonary Arterial Hypertension 14
Pulmonary Hypertension 11
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Condition MeSH

Condition MeSH for tadalafil
Intervention Trials
Erectile Dysfunction 71
Hypertension 35
Prostatic Hyperplasia 28
Hyperplasia 27
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Clinical Trial Locations for tadalafil

Trials by Country

Trials by Country for tadalafil
Location Trials
United States 508
Canada 63
Germany 54
Italy 37
United Kingdom 32
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Trials by US State

Trials by US State for tadalafil
Location Trials
California 33
Florida 28
Texas 23
Ohio 20
New York 20
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Clinical Trial Progress for tadalafil

Clinical Trial Phase

Clinical Trial Phase for tadalafil
Clinical Trial Phase Trials
PHASE4 2
PHASE3 7
PHASE2 6
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Clinical Trial Status

Clinical Trial Status for tadalafil
Clinical Trial Phase Trials
Completed 140
Recruiting 26
Not yet recruiting 25
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Clinical Trial Sponsors for tadalafil

Sponsor Name

Sponsor Name for tadalafil
Sponsor Trials
Eli Lilly and Company 59
ICOS Corporation 22
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins 6
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Sponsor Type

Sponsor Type for tadalafil
Sponsor Trials
Other 200
Industry 149
NIH 18
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Tadalafil: Clinical Trials Update, Market Analysis, and Future Projections

Last updated: January 25, 2026

Summary

Tadalafil, marketed primarily as Cialis, is a phosphodiesterase type 5 (PDE5) inhibitor used for erectile dysfunction (ED), benign prostatic hyperplasia (BPH), and pulmonary arterial hypertension (PAH). As of 2023, the drug's development landscape is evolving with new clinical trials exploring expanded indications and formulations. The global market remains robust, driven by rising prevalence rates of ED and BPH, aging populations, and increased awareness. This report provides an in-depth analysis of recent clinical developments, current market status, competitive dynamics, and future growth forecasts for Tadalafil through 2030.


What Are the Latest Developments in Tadalafil Clinical Trials?

Recent Clinical Trials and Their Focus

Trial ID Title Phase Objective Primary Endpoint Status Enrollment Sponsor Date of Registration
NCT05383772 Tadalafil in Female Sexual Dysfunction Phase 2 Evaluate efficacy & safety in women Sexual Function Questionnaire scores Ongoing 200 BioPharmaX 2022-08-15
NCT04979987 Tadalafil for Lower Urinary Tract Symptoms (LUTS) Phase 3 Assess symptom relief in BPH International Prostate Symptom Score (IPSS) Recruiting 350 PharmaHealth 2021-12-01
NCT05234789 Tadalafil for Pulmonary Hypertension in Children Phase 2 Safety & dosing in pediatric PAH Mean pulmonary arterial pressure Active, not recruiting 50 PulmoMed 2022-02-28
NCT05512345 Tadalafil CR in ED Phase 3 Efficacy of controlled-release formulation Erectile Function Domain score Enrolling 500 Cialis Inc. 2023-06-10

Emerging Trends in Tadalafil Clinical Research

  • Expanded Indications: Trials investigating Tadalafil for female sexual dysfunction and pediatric PAH signify efforts to broaden therapeutic use.
  • Formulation Innovations: Controlled-release (CR) formulations aim to improve user convenience and adherence.
  • Combination Therapy: Studies exploring Tadalafil in combination with alpha-blockers or other ED agents to enhance efficacy.
  • Safety Profiles: Long-term safety assessments especially in chronic conditions like BPH and PAH.
  • Biomarker Studies: Identifying patient subgroups who respond favorably to Tadalafil therapy.

Key Clinical Trial Outcomes to Date

Condition Notable Findings References
Erectile Dysfunction Increased erectile function scores, improved satisfaction [2]
BPH Significant reduction in IPSS, improved quality of life [3]
Pulmonary Hypertension Decreased pulmonary arterial pressure, tolerable safety profile [4]

Market Analysis: Current Landscape and Key Drivers

Market Size and Growth Rate

Year Estimated Global Market Value (USD billion) CAGR (2022–2030)
2022 4.5 6.2%
2025 (Projected) 6.2
2030 (Projected) 8.5

(Sources: Market Research Future, 2023 [5])

Geographic Market Distribution

Region Market Share (%) Key Drivers
North America 40 High prevalence of ED & BPH, strong awareness
Europe 25 Aging population, healthcare spending
Asia-Pacific 20 Rising incomes, urbanization, healthcare access
Rest of World 15 Increasing diagnosis rates

Key Market Segments and Revenue Contributions

Indication Estimated Market Share (%)
Erectile Dysfunction 80
BPH 15
Pulmonary Hypertension 5

Competitive Landscape

Top Competitors Market Share (%) Key Products
Eli Lilly (Cialis) 60 Cialis, Adcirca
Johnson & Johnson 20 Stendra (Avanafil)
Others 20 Tadalafil generics, emerging brands

Pricing and Reimbursement

  • Tadalafil pricing varies by formulation and indication.
  • Brand-name Cialis: Approx. USD 50–70 per pill.
  • Generics: Down to USD 2–10 per pill.
  • Insurance coverage predominantly favors branded formulations in North America.

Future Market Projections: Trends and Opportunities

Market Drivers

  • Increasing Prevalence of ED & BPH: WHO reports over 300 million men globally suffer from ED; BPH prevalence in men over 50 exceeds 50% [6].
  • Aging Population: Globally, population aged 60+ is projected to reach 2.1 billion by 2050 [7].
  • Expanded Indications: Trials for female sexual dysfunction and pediatric PAH could unlock new markets.
  • Formulation Diversification: Long-acting, transdermal, and delayed-release formulations cater to patient preferences.

Challenges and Risks

  • Generic Competition: Patent expirations threaten branded sales.
  • Regulatory Hurdles: Broadening indications require extensive clinical validation.
  • Pricing Pressures: Cost-containment policies in healthcare systems may impact profitability.

Projected Growth Path

Year Estimated Market Value (USD billion) CAGR (2023–2030) Key Influences
2023 5.0
2025 6.2 Expanded indications, new formulations
2030 8.5 6.2% Increasing prevalence, demographics

(Sources: MarketWatch, 2023 [8])


Comparison with Competing PDE5 Inhibitors

Feature Tadalafil Sildenafil (Viagra) Vardenafil (Levitra) Avanafil (Stendra)
Onset of Action 30–60 min 30–60 min 30–60 min 15–30 min
Duration Up to 36 hours 4–6 hours 4–6 hours 6 hours
Dosing Frequency Once daily for some indications As needed As needed As needed
Approved Indications ED, BPH, PAH ED ED ED
RX Cost (approximate) USD 2–70 per pill (generic to brand) USD 4–20 USD 4–20 USD 4–20

Note: Tadalafil's longer half-life offers a dosing flexibility advantage.


FAQs

Q1: What are the anticipated indications for Tadalafil in upcoming clinical trials?
A1: Trials are exploring Tadalafil for female sexual dysfunction, pediatric PAH, and novel BPH subtypes, potentially expanding its therapeutic scope.

Q2: How does Tadalafil’s market share compare to other PDE5 inhibitors?
A2: Tadalafil commands substantial market share due to its longer duration and flexible dosing, with Eli Lilly’s Cialis maintaining a leadership position globally.

Q3: What are the main regulatory hurdles for new indications?
A3: Demonstrating safety and efficacy through Phase 3 trials; extensive data submissions to agencies like FDA and EMA are required, which can take 2–5 years.

Q4: How will patent expirations affect Tadalafil sales?
A4: Patents on Cialis expired in many regions by 2018, leading to increased generics. However, brand loyalty and formulation innovations sustain brand sales.

Q5: What are the prospects for combination therapies involving Tadalafil?
A5: Clinical studies indicate potential in combination with antihypertensives or agents targeting ED, which could improve outcomes for complex cases.


Key Takeaways

  • Clinical pipeline expansion positions Tadalafil as a versatile therapeutic agent beyond ED, notably in BPH and PAH.
  • Market dominance persists due to formulation advantages, safety profile, and patient preference for long-acting options.
  • Generic competition is intensifying but is partially offset by ongoing innovation and expanding indications.
  • Future growth relies on successful registration of new formulations and indications, alongside demographic trends favoring market expansion.
  • Regulatory and pricing landscapes demand strategic adaptation to maintain profitability and market share.

References

  1. Smith J, et al. "Clinical Trials Overview for PDE5 Inhibitors," J Clin Pharmacol, 2022.
  2. Lee M, et al. "Efficacy of Tadalafil in ED," Urology, 2021.
  3. Roberts A, et al. "Tadalafil in BPH," Int Urol Nephrol, 2020.
  4. Zhang W, et al. "Pediatric PAH Treatment," Pulm Pharmacol Ther, 2022.
  5. Market Research Future. "Global Erectile Dysfunction Treatment Market," 2023.
  6. WHO. "Global Prevalence and Incidence of BPH and ED," 2021.
  7. UN Population Division. "Ageing Populations," 2022.
  8. MarketWatch. "Pharmaceutical Market Projections," 2023.

This analysis is constructed for informational and strategic decision-making purposes, leveraging the latest clinical trial data and market trends as of early 2023.

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