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Showing 1–24 of 26 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: sodium bicarbonate buffered lidocaine Clear all
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Split Face Study of the Duration of Local Anesthetics

NCT05767749
View directory record Official record
Conditions
Anesthetics, Local
Interventions
lidocaine + epinephrine 1:100,000, Ropivacaine 0.5% Injectable Solution, Bupivacaine 0.5% Injectable Solution
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 29, 2026, 9:50 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Refining Paracervical Block Techniques for Pain Control in First Trimester Surgical Abortion

NCT01466491
View directory record Official record
Conditions
Pain
Interventions
Paracervical block technique with lidocaine
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 99 Years · Female only
Enrollment
332 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
2
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 7, 2019 · Synced Sep 29, 2026, 9:50 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Paracervical Versus Intracervical Lidocaine

NCT00816751
View directory record Official record
Conditions
Abortion, Induced, Pain
Interventions
Paracervical block, Intracervical, Buffered Lidocaine, vasopressin, sodium bicarbonate
Procedure · Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older · Female only
Enrollment
89 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Aug 12, 2019 · Synced Sep 29, 2026, 9:50 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Pain Perception: Lidocaine Rate/Temp/Buffer

NCT02823002
View directory record Official record
Conditions
Pain
Interventions
Slow, Room Temperature Injection, Rapid, Room Temperature Injection, Slow, Warm Temperature Injection, Rapid, Warm Temperature Injection, Buffered Injection, Non-Buffered Injection, Lidocaine, Buffer
Procedure · Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 89 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 14, 2024 · Synced Sep 29, 2026, 9:50 PM EDT
Completed Phase 4 Interventional Results available

Buffered Lidocaine in the Pediatric Dental Patient

NCT04055116
View directory record Official record
Conditions
Pediatric Dentistry
Interventions
Buffered Lidocaine
Drug
Lead sponsor
Geisinger Clinic
Other
Eligibility
4 Years to 17 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 6, 2023 · Synced Sep 29, 2026, 9:50 PM EDT
Completed Phase 2 Interventional Results available

Buffered Lidocaine for Loop Electrosurgical Excision Procedures (LEEPs)

NCT01405768
View directory record Official record
Conditions
Uterine Cervical Dysplasia
Interventions
sodium bicarbonate buffered lidocaine, Non-buffered lidocaine
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older · Female only
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 27, 2014 · Synced Sep 29, 2026, 9:50 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Buffered vs. Unbuffered Local Anesthesia in Mandibular Molars Diagnosed With Symptomatic Irreversible Pulpitis

NCT05227300
View directory record Official record
Conditions
Symptomatic Irreversible Pulpitis
Interventions
Onset Sodium Bicarbonate Inj., 8.4%, USP Neutralizing Additive Solution, 2% lidocaine with 1:100,000 epinephrine
Drug
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 80 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated May 13, 2024 · Synced Sep 29, 2026, 9:50 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Nitrous Oxide for Pain Management of First Trimester Surgical Abortion

NCT02096575
View directory record Official record
Conditions
Abortion in First Trimester
Interventions
Nitrous oxide administration
Other
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years and older · Female only
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Apr 18, 2016 · Synced Sep 29, 2026, 9:50 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Comparison of Bacteriostatic Saline to Buffered Lidocaine for Ultrasound Guided Hip Joint Injection Local Anesthesia

NCT02209272
View directory record Official record
Conditions
Hip Pain
Interventions
bacteriostatic saline, buffered lidocaine
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 75 Years
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 10, 2019 · Synced Sep 29, 2026, 9:50 PM EDT
Recruiting Phase 4 Interventional

Paracervical Block for Pain Reduction in Saline Infusion Sonograms

NCT07048769
View directory record Official record
Conditions
Pain During Saline Infusion Sonogram
Interventions
Lidocaine, Sham paracervical block
Drug · Procedure
Lead sponsor
Montefiore Medical Center
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
246 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Hartsdale, New York
Source: ClinicalTrials.gov public record
Updated Jul 8, 2026 · Synced Sep 29, 2026, 9:50 PM EDT
Completed Not applicable Interventional

Contrast of Buffered Vs. Unbuffered Lidocaine in Bone Marrow Biopsies

NCT00456872
View directory record Official record
Conditions
Pain
Interventions
lidocaine
Drug
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 3, 2017 · Synced Sep 29, 2026, 9:50 PM EDT
Completed Not applicable Interventional Results available

Effect of Buffered Numbing Solution on Patients With Toothaches

NCT01868776
View directory record Official record
Conditions
Irreversible Pulpitis (Toothache)
Interventions
buffered lidocaine, nonbuffered lidocaine
Drug
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 65 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 5, 2020 · Synced Sep 29, 2026, 9:50 PM EDT
Completed Phase 2 Interventional Results available

Lidocaine as an Endotracheal Tube (ETT) Cuff Media

NCT03343080
View directory record Official record
Conditions
Cardiac Disease
Interventions
1.8% lidocaine plus 0.76% sodium bicarbonate, Air
Drug · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 26, 2019 · Synced Sep 29, 2026, 9:50 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Paracervical Block for Pain Associated With Laminaria Insertion

NCT02454296
View directory record Official record
Conditions
Pain
Interventions
Paracervical Block with lidocaine, Sham paracervical block
Drug
Lead sponsor
University of Hawaii
Other
Eligibility
18 Years to 49 Years · Female only
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Honolulu, Hawaii
Source: ClinicalTrials.gov public record
Updated Apr 13, 2017 · Synced Sep 29, 2026, 9:50 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Paracervical Block for Pain Control With Osmotic Dilator Placement

NCT02354092
View directory record Official record
Conditions
Abortion Late, Pain
Interventions
Local anesthetic for tenaculum placement, Sham, Paracervical Block, Dilator Placement, Post-procedural assessment, Preprocedural pain control
Procedure · Behavioral · Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older · Female only
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
2
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jun 10, 2019 · Synced Sep 29, 2026, 9:50 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Comparison of Pain of Conventional to Buffered Local Anesthesia During Injection in Pediatric Dental Patients

NCT01622296
View directory record Official record
Conditions
Pain
Interventions
Sodium bicarbonate, Lidocaine
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
9 Years to 12 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 16, 2014 · Synced Sep 29, 2026, 9:50 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Combination of Buffered Anesthetic to Treat Mandibular Molars

NCT06047366
View directory record Official record
Conditions
Symptomatic Irreversible Pulpitis
Interventions
Sodium bicarbonate, Lidocaine w/ epi, Articaine w/ epi, Mepivacaine plain
Drug
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 80 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated May 12, 2025 · Synced Sep 29, 2026, 9:50 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Empathy Through Pain Control: Lidocaine Paracervical Block for IUD Placements

NCT06960317
View directory record Official record
Conditions
Contraception, Pain, Acute, Anesthesia, Local
Interventions
Buffered Lidocaine, Sham Comparator, Unbuffered lidocaine, Xylocaine jelly 2%, Surgilube
Drug · Other
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
204 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jun 12, 2025 · Synced Sep 29, 2026, 9:50 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Split Face Study of the Duration of Local Anesthetics - Fourth Arm

NCT06694714
View directory record Official record
Conditions
Anesthesia, Local
Interventions
0.5 ml lidocaine + epinephrine 1:100,000, 1.0 ml lidocaine + epinephrine 1:100,000
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 21, 2026 · Synced Sep 29, 2026, 9:50 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Local Anesthetics for Pain Reduction Prior to IV Line Placement

NCT01759459
View directory record Official record
Conditions
Pain, Local Anesthesia for Peripheral Intravenous Catheterization
Interventions
Lidocaine, Buffered Lidocaine, Bacteriostatic Normal Saline
Drug
Lead sponsor
Allina Health System
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 14, 2022 · Synced Sep 29, 2026, 9:50 PM EDT
Completed Phase 1Phase 2 Interventional

Buffered Lidocaine for Reducing Pain in Patients Undergoing Prostate Biopsy, BURN Trial

NCT06661902
View directory record Official record
Conditions
Prostate Cancer
Interventions
Buffered Lidocaine (1% Lidocaine + 8.4% Sodium Bicarbonate, in a 3:1 ratio), Lidocaine, Biopsy of Prostate, Questionnaire Administration
Drug · Procedure · Other
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older · Male only
Enrollment
350 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Feb 16, 2026 · Synced Sep 29, 2026, 9:50 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Paracervical Block for Pain Control in First Trimester Abortion

NCT01094366
View directory record Official record
Conditions
Legal Abortion With Complication, Pain
Interventions
Paracervical Block, Sham Paracervical Block
Procedure
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 60 Years · Female only
Enrollment
121 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Dec 26, 2019 · Synced Sep 29, 2026, 9:50 PM EDT
Completed Phase 4 Interventional Results available

Addition of Buprenorphine to Paracervical Block for Pain Control During Osmotic Dilator Insertion

NCT04254081
View directory record Official record
Conditions
Procedural Pain, Buprenorphine, Adjuvants, Anesthesia, Dilation and Evacuation, Analgesics
Interventions
Buprenorphine 0.15 MG, Lidocaine 1% Injectable Solution
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older · Female only
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jul 31, 2023 · Synced Sep 29, 2026, 9:50 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Buffered Lidocaine in Paracervical Blocks

NCT03107754
View directory record Official record
Conditions
Pain
Interventions
Lidocaine, Lidocaine-Sodium Bicarbonate
Drug
Lead sponsor
University of Hawaii
Other
Eligibility
14 Years and older · Female only
Enrollment
98 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Honolulu, Hawaii
Source: ClinicalTrials.gov public record
Updated Jan 4, 2021 · Synced Sep 29, 2026, 9:50 PM EDT