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Heart FailurePhase 1NCT06167707

Pharmacokinetics and Pharmacodynamics of Subcutaneous vs Intravenous Furosemide in Healthy Volunteers

A Phase 1 study testing SCP-111 and Furosemide USP in people with Heart Failure and Fluid Overload, run by scPharmaceuticals, Inc. at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This study aims to compare the pharmacokinetics and pharmacodynamics of subcutaneous (SC) and intravenous (IV) furosemide. The test formulation in this study is furosemide injection, 80 mg/1 mL, buffered to a neutral pH for SC administration via an autoinjector. Read more about this study

Who is it for?
Ages 45 to 80 yearsHealthy volunteers can take part
Conditions the study is for
Heart Failure, Fluid Overload
What is being tested?
SCP-111 and Furosemide USP
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
21 participants
Where
1 siteUnited States
Study dates
19 Apr 2024to 14 Jun 2024
Phase
Phase 1
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 45 to 80 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • An Institutional Review Board (IRB) approved informed consent is signed and dated prior to any study-related activities.
  • Male and female subjects 45 to 80 years of age.
  • Has the ability to understand the requirements of the study and is willing to comply with all study procedures.
  • In the opinion of the Investigator, able to participate in the study.

Who cannot join

  • Pregnant or lactating women or women of childbearing age who are not willing to use an adequate form of contraception.
  • Systolic BP (SBP) < 90 mmHg at screening or baseline.
  • Heart rate > 110 beats per minute (BPM) at screening or baseline.
  • Temperature > 38°C (oral or equivalent).
  • Serum potassium < 3.0 or > 5.5 mEq/L at screening.
  • Other significant cardiac abnormalities which may interfere with study participation or study assessments.
Show all 20Show fewer
  • Current or planned treatment during the study with any IV therapies, including inotropic agents, vasopressors, levosimendan, nesiritide or analogues. scPharmaceuticals, Inc. SCP-111 PK/PD Study Protocol Number: scP-04-001 Confidential Page 14 of 56
  • Presence of implanted ventricular assist device, cardiac defibrillator or pacemaker.
  • Severely impaired renal function, defined as an estimated glomerular filtration rate (eGFR) at screening admission < 30 mL/min/1.73m2, calculated using the simplified Modification of Diet in Renal Disease (sMDRD) equation.
  • Urinary retention due to bladder emptying disorders and/or urethral narrowing.
  • Presence or need for urinary catheterization.
  • Reported history of hepatic cirrhosis.
  • Administration of intravenous radiographic contrast agent within 72 hours prior to Screening.
  • Concomitant or any use within past 30 days of drugs known to interact with furosemide (aminoglycoside antibiotics, ethacrynic acid, high doses of salicylates, cisplatin, tubocurarine, succinylcholine, chloral hydrate, phenytoin, methotrexate, indomethacin, or lithium).
  • Administration of an investigational drug or implantation of investigational device, or participation in another interventional clinical trial, within 30 days prior to Screening.
  • Any surgical or medical condition which in the opinion of the investigator may interfere with participation in the study or which may affect the outcome of the study.
  • Positive urine drug screen at Screening or Baseline.
  • Blood alcohol concentration > 2 mg/dL (0.02%) at Screening.
  • Alcohol breath test > 2 mg/dL (0.02%) on admission to the CRU.
  • History of severe allergic or hypersensitivity reactions to furosemide or any component of the SCP-111 formulation (tromethamine or benzyl alcohol)

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Elixia EPCT, LLC

    Tampa, Florida, 33618

Other trials in United States

About this study

Official title: Open-label, Single-dose, Randomized, Two-way Crossover Study to Compare the Pharmacokinetics and Pharmacodynamics of Subcutaneous Injection of SCP-111 (Furosemide) vs Intravenous Injection of Furosemide in Healthy Volunteers

This study aims to compare the pharmacokinetics and pharmacodynamics of subcutaneous (SC) and intravenous (IV) furosemide. The test formulation in this study is furosemide injection, 80 mg/1 mL, buffered to a neutral pH for SC administration via an autoinjector. A commercial formulation of furosemide injection, USP, solution 10 mg/mL administered as a 40 mg IV injection over 2 minutes followed by a second dose of 40 mg, 2 hours later, will serve as the reference drug.

The objectives of this study are:

  • To estimate the bioavailability and describe the pharmacokinetics and pharmacodynamics of furosemide administered as SC injection via autoinjector compared with equivalent dose of furosemide administered as two 40 mg IV injections, two hours apart.
  • To describe the safety and tolerability of furosemide administered as SC injection via an autoinjector.
Read the detailed description

This is an open-label, single-center, single-dose, randomized, two-way crossover study in healthy volunteers. Each Subject will complete Screening, Baseline, Treatment, and Follow-up Phases.

After a Screening Phase, Subjects meeting entry criteria will be admitted to the clinical research unit (CRU) and undergo baseline assessments. Subjects will be randomly assigned in a 1:1 ratio to 1 of 2 treatment sequences (IV furosemide followed by SC or vice versa). Subjects will remain domiciled in the CRU for each treatment period which will be about 12-hours. After final assessments are performed, Subjects may be discharged from the CRU if safety parameters are acceptable to the Investigator and return to the CRU after a 3-day washout period to receive the second treatment sequence. The Follow-up Phase will occur 24-48 hours after discharge from the CRU following treatment sequence 2, completing Subjects' study participation.

Being tested
SCP-111, Furosemide USP
Medical subject headings
Heart Failure, Edema

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • SCP-111Drug

    Furosemide injection 80 mg/mL, 80 mg SC via autoinjector x 1 dose

  • Furosemide USPDrug

    Furosemide injection, USP 10 mg/mL, 40 mg IV over 2 minutes followed by 40 mg 2 hours later

Study groups in NCT06167707
Study groupRoleWhat they receive
Treatment Sequence 1ExperimentalPeriod 1: SC Period 2: IV
Receives: Drug: SCP-111; Drug: Furosemide USP
Treatment Sequence 2ExperimentalPeriod 1: IV Period 2: SC
Receives: Drug: SCP-111; Drug: Furosemide USP

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. AUClast

    Area under the plasma concentration-time curve from time 0 (pre-dose) to time of last measurable plasma concentration.

    Measured: SC SCP-111: 0, 5, 15, 30, 45 minutes and 1, 1.25, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose. IV Furosemide: 0, 5, 15, 30, 45 minutes and 1, 1.5, 2 hours after 1st IV dose; 5, 15, 30, 45 minutes and 1, 1.5, 2, 3, 4, 6, 8, 10 hours after 2nd IV dose. IV:

  2. AUCinf

    Area under the plasma concentration-time curve from time 0 (pre-dose) extrapolated to infinity.

    Measured: SC SCP-111: 0, 5, 15, 30, 45 minutes and 1, 1.25, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose. IV Furosemide: 0, 5, 15, 30, 45 minutes and 1, 1.5, 2 hours after 1st IV dose; 5, 15, 30, 45 minutes and 1, 1.5, 2, 3, 4, 6, 8, 10 hours after 2nd IV dose.

  3. AUCext

    The percentage of the AUC that is extrapolated beyond the last measurable concentration.

    Measured: SC SCP-111: 0, 5, 15, 30, 45 minutes and 1, 1.25, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose. IV Furosemide: 0, 5, 15, 30, 45 minutes and 1, 1.5, 2 hours after 1st IV dose; 5, 15, 30, 45 minutes and 1, 1.5, 2, 3, 4, 6, 8, 10 hours after 2nd IV dose.

  4. Cmax

    Maximum observed plasma concentration of Furosemide

    Measured: SC SCP-111: 0, 5, 15, 30, 45 minutes and 1, 1.25, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose. IV Furosemide: 0, 5, 15, 30, 45 minutes and 1, 1.5, 2 hours after 1st IV dose; 5, 15, 30, 45 minutes and 1, 1.5, 2, 3, 4, 6, 8, 10 hours after 2nd IV dose.

  5. Tmax

    Time of maximum observed Furosemide plasma concentration

    Measured: SC SCP-111: 0, 5, 15, 30, 45 minutes and 1, 1.25, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose. IV Furosemide: 0, 5, 15, 30, 45 minutes and 1, 1.5, 2 hours after 1st IV dose; 5, 15, 30, 45 minutes and 1, 1.5, 2, 3, 4, 6, 8, 10 hours after 2nd IV dose.

  6. λz

    Apparent plasma terminal-phase elimination rate constant

    Measured: SC SCP-111: 0, 5, 15, 30, 45 minutes and 1, 1.25, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose. IV Furosemide: 0, 5, 15, 30, 45 minutes and 1, 1.5, 2 hours after 1st IV dose; 5, 15, 30, 45 minutes and 1, 1.5, 2, 3, 4, 6, 8, 10 hours after 2nd IV dose.

  7. t½

    Terminal-phase half-life

    Measured: SC SCP-111: 0, 5, 15, 30, 45 minutes and 1, 1.25, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose. IV Furosemide: 0, 5, 15, 30, 45 minutes and 1, 1.5, 2 hours after 1st IV dose; 5, 15, 30, 45 minutes and 1, 1.5, 2, 3, 4, 6, 8, 10 hours after 2nd IV dose.

  8. Clearance

    Systemic clearance for IV furosemide (CL) and Apparent systemic clearance for SC furosemide (CL/F)

    Measured: SC SCP-111: 0, 5, 15, 30, 45 minutes and 1, 1.25, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose. IV Furosemide: 0, 5, 15, 30, 45 minutes and 1, 1.5, 2 hours after 1st IV dose; 5, 15, 30, 45 minutes and 1, 1.5, 2, 3, 4, 6, 8, 10 hours after 2nd IV dose.

  9. Volume of Distribution, Terminal Phase

    Systemic Volume of distribution, terminal phase for IV furosemide (V) and Apparent Volume of distribution, terminal phase for SC furosemide (Vz/F)

    Measured: SC SCP-111: 0, 5, 15, 30, 45 minutes and 1, 1.25, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose. IV Furosemide: 0, 5, 15, 30, 45 minutes and 1, 1.5, 2 hours after 1st IV dose; 5, 15, 30, 45 minutes and 1, 1.5, 2, 3, 4, 6, 8, 10 hours after 2nd IV dose.

  10. Urine Output 0-6 Hours

    Total Urine Output from 0 to 6 hours

    Measured: 0-1, 1-2, 2-3, 3-4, 4-5, 5-6 hours post-dose

  11. Urine Output 0-8 Hours

    Total Urine Output from 0 to 8 hours

    Measured: 0-1, 1-2, 2-3, 3-4, 4-5, 5-6, 6-7, 7-8 hours post-dose

  12. Urine Output 0-12 Hours

    Total Urine Output from 0 to 12 hours

    Measured: 0-1, 1-2, 2-3, 3-4, 4-5, 5-6, 6-7, 7-8, 8-10, 10-12 hours post-dose

  13. Urinary Sodium 0-6 Hours

    Urinary sodium excretion from 0 to 6 hours

    Measured: 0-1, 1-2, 2-3, 3-4, 4-5, 5-6 hours post-dose

  14. Urinary Sodium 0-8 Hours

    Urinary sodium excretion from 0 to 8 hours

    Measured: 0-1, 1-2, 2-3, 3-4, 4-5, 5-6, 6-7, 7-8 hours post-dose

  15. Urinary Sodium 0-12 Hours

    Urinary sodium excretion from 0 to 12 hours

    Measured: 0-1, 1-2, 2-3, 3-4, 4-5, 5-6, 6-7, 7-8, 8-10, 10-12 hours post-dose

  16. Urinary Potassium 0-6 Hours

    Urinary potassium excretion from 0 to 6 hours

    Measured: 0-1, 1-2, 2-3, 3-4, 4-5, 5-6 hours post-dose

  17. Urinary Potassium 0-8 Hours

    Urinary potassium excretion from 0 to 8 hours

    Measured: 0-1, 1-2, 2-3, 3-4, 4-5, 5-6, 6-7, 7-8 hours post-dose

  18. Urinary Potassium 0-12 Hours

    Urinary potassium excretion from 0 to 12 hours

    Measured: 0-1, 1-2, 2-3, 3-4, 4-5, 5-6, 6-7, 7-8, 8-10, 10-12 hours post-dose

Secondary outcomes (1)
  1. Injection Site Pain

    Injection site pain was assessed using an 11-point scale where 0 was equivalent to no pain and 10 was equivalent to the worst possible pain.

    Measured: SC SCP-111: pre-dose, immediately after dose, 15, 30 minutes and 6,12 hours post-dose. IV Furosemide: pre-dose, after place IV needle, immediately after 1st IV dose; 15, 30, minutes, immediately after 2nd dose,15, 30 minutes and 4, 10 hours after 2nd dose

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted12 Dec 2023
  2. Study start19 Apr 2024
  3. Primary completion14 Jun 2024
  4. Study completion14 Jun 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Crossover
Masking
None (open label)
Enrolment
21 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06167707
Sponsor's protocol ID
scP-04-001
Status last verified
Mar 2026
First submitted
4 Dec 2023
Last updated
30 Mar 2026
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing SCP-111 and Furosemide USP in people with Heart Failure and Fluid Overload, run by scPharmaceuticals, Inc. at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 20 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 30 Mar 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 11 Mar 2026). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

AUClast (time frame: SC SCP-111: 0, 5, 15, 30, 45 minutes and 1, 1.25, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose. IV Furosemide: 0, 5, 15, 30, 45 minutes and 1, 1.5, 2 hours after 1st IV dose; 5, 15, 30, 45 minutes and 1, 1.5, 2, 3, 4, 6, 8, 10 hours after 2nd IV dose. IV:). The study lists 18 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 30 Mar 2026.

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