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Tadalafil for the Treatment of Raynaud's

This study has been completed.
Eli Lilly and Company
Information provided by (Responsible Party):
Anne Laumann, Northwestern University Identifier:
First received: May 31, 2008
Last updated: February 14, 2013
Last verified: February 2013

The investigators propose that tadalafil will increase digital blood flow and improve the symptoms and signs of secondary Raynaud's phenomenon.

Condition Intervention
Drug: Tadalafil

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
Official Title: Tadalafil for the Treatment of Secondary Raynaud's Phenomenon

Resource links provided by NLM:

Further study details as provided by Northwestern University:

Primary Outcome Measures:
  • Raynaud's condition score(RCS) [ Time Frame: 2 weeks ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Digital blood pressure [ Time Frame: every 2 weeks ] [ Designated as safety issue: No ]

Enrollment: 10
Study Start Date: September 2008
Study Completion Date: April 2010
Primary Completion Date: February 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
Subjects will receive tadalafil 20mg every other day for the first month, and then placebo for the second month.
Drug: Tadalafil
Subjects will be randomized to receive either tadalafil for the first month followed by placebo or placebo for the first month and followed by tadalafil
Other Name: Cialis
Experimental: 2
Subjects will receive placebo for the first month, and tadalafil 20mg orally every other day for the second month.
Drug: Tadalafil
Subjects will be randomized to receive either tadalafil for the first month followed by placebo or placebo for the first month and followed by tadalafil
Other Name: Cialis

Detailed Description:

The primary goal of our study is to decrease the frequency, duration and severity of vasospastic attacks in patients with secondary Raynaud's. The secondary goal is to document increased blood flow and lessened capillary dysfunction in these patients. Both of these goals are to be achieved using a course of treatment with Tadalafil.We anticipate a decrease in the frequency, duration and severity of Raynaud's attacks. Improved digital blood flow and digital blood pressures, and a decrease in digital capillary dysfunction.


Ages Eligible for Study:   18 Years to 65 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • active Raynaud's Phenomenon
  • stable disease and medication requirements over the previous 2 months
  • subjects willing and able to participate in study assessments
  • ability to understand and sign informed consent
  • ages 18 to 65, both sexes
  • a diagnosis of diffuse or limited cutaneous sclerosis, MCTD using the American College Rheumatology criteria

Exclusion Criteria:

  • uncontrolled HTN, DM, unstable disease, angina or using oral nitrates
  • smoking, active alcoholism, drug abuse within 5 years
  • abnormal renal function
  • ulnar arterial occlusive disease as shown by a positive Allen Test
  • Pregnant or breast feeding or considering preg. in next 4 months
  • past or present major psych. illness
  • allergy or sensitivity to tadalafil
  • subject unable to understand protocol or give informed consent
  • part. in another study trial within 30 days
  • taking sildenafil
  Contacts and Locations
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Please refer to this study by its identifier: NCT00822354

United States, Illinois
Northwestern University Feinberg School of Medicine, Department of Dermatology
Chicago, Illinois, United States, 60611
Sponsors and Collaborators
Northwestern University
Eli Lilly and Company
Principal Investigator: Anne Laumann, MBChB, MRCP Northwestern University
  More Information

No publications provided

Responsible Party: Anne Laumann, Professor of Dermatology, Northwestern University Identifier: NCT00822354     History of Changes
Other Study ID Numbers: STU1199
Study First Received: May 31, 2008
Last Updated: February 14, 2013
Health Authority: United States: Institutional Review Board

Keywords provided by Northwestern University:
Secondary Raynaud's Phenomenon

Additional relevant MeSH terms:
Cardiovascular Agents
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Pharmacologic Actions
Phosphodiesterase 5 Inhibitors
Phosphodiesterase Inhibitors
Therapeutic Uses
Urological Agents
Vasodilator Agents processed this record on November 20, 2014