Nicotine

InterventionApproved 19843 papers5 findingsPubChem 89594ChEBI 17688MeSH D009538

In one mouse study, nicotine increases vasoactive intestinal peptide-, parvalbumin- and somatostatin-positive interneurons in the auditory cortex after three months, but has no effect on ALPHA2 nicotinic receptor-expressing cells in that region.

  • Animals1

Outcomes

5

ALPHA2 nicotinic receptor-expressing cells

no changein mice1Very low certainty

1 study
  1. Nicotine has no effect on ALPHA2 nicotinic receptor-expressing cells in mice.

    Animalsauditory cortex

    Chronic nicotine reverses age-related decline of interneuron markers in mouse auditory cortex · Frontiers in aging neuroscience · 9 Sep 2026

ALPHA2 nicotinic receptor-expressing cells →

Somatostatin-positive interneurons

upin mice1Very low certainty

1 study
  1. Nicotine increases somatostatin-positive interneurons in mice.

    Animalsauditory cortexthree months

    Chronic nicotine reverses age-related decline of interneuron markers in mouse auditory cortex · Frontiers in aging neuroscience · 9 Sep 2026

Somatostatin-positive interneurons →

Vasoactive intestinal peptide-positive interneurons

upin mice1Very low certainty

1 study
  1. Nicotine increases vasoactive intestinal peptide-positive interneurons in mice.

    Animalsauditory cortexthree months

    Chronic nicotine reverses age-related decline of interneuron markers in mouse auditory cortex · Frontiers in aging neuroscience · 9 Sep 2026

Vasoactive intestinal peptide-positive interneurons →

Parvalbumin-positive interneurons

upin mice1Very low certainty

1 study
  1. Nicotine increases parvalbumin-positive interneurons in mice.

    Animalsauditory cortexthree months

    Chronic nicotine reverses age-related decline of interneuron markers in mouse auditory cortex · Frontiers in aging neuroscience · 9 Sep 2026

Parvalbumin-positive interneurons →

Arterial stiffness

upin humans1

1 study
  1. Nicotine increases arterial stiffness in humans.

    Review

    Snus, nicotine pouches and cardiovascular disease: Evidence, mechanisms, and the challenge of novel nicotine products · Journal of internal medicine · 7 Sep 2026

Trials

198

Approved

All 10

Repurposing

All 28

In trials

  • Cigarette Smoking

    Phase 4 · Results posted · 20 trials

  • Tobacco Use Cessation

    Phase 4 · Results posted · 13 trials

  • Vaping

    Phase 4 · Results posted · 10 trials

  • Tobacco Smoking

    Phase 4 · Results posted · 7 trials

  • Lung Neoplasms

    Phase 4 · Results posted · 4 trials

  • Tobacco Use

    Phase 4 · Completed · 3 trials

All 21
  • Acquired Immunodeficiency Syndrome

    Phase 4 · Results posted · 2 trials

  • Head and Neck Neoplasms

    Phase 4 · Results posted · 2 trials

  • Nausea

    Phase 4 · Results posted · 2 trials

  • Uterine Cervical Neoplasms

    Phase 4 · Results posted · 2 trials

  • Pulmonary heart disease

    Phase 4 · Results posted · 1 trial

  • Stomach neoplasm

    Phase 4 · Results posted · 1 trial

  • Marijuana Abuse

    Phase 3 · Results posted · 3 trials

  • Harm Reduction

    Phase 3 · Completed · 2 trials

  • Non-Small-Cell Lung Carcinoma

    Phase 3 · Completed · 2 trials

  • Small cell lung carcinoma

    Phase 3 · Completed · 1 trial

  • Addictive Behavior

    Phase 2 · Completed · 4 trials

  • Alcohol Drinking

    Phase 2 · Results posted · 2 trials

  • Breast Neoplasms

    Phase 2 · Terminated · 2 trials

  • Vomiting

    Phase 2 · Terminated · 1 trial

  • Cognition Disorders

    Early phase 1 · Completed · 2 trials

Stopped

  • NCT02147132 · Terminated · Smoking

    Difficulty recruiting eligible participants; study medication was expiring.

  • NCT00046813 · Terminated · Tobacco use disorder

    Interim data analysis showed no effect between treatment groups

  • NCT06088862 · Terminated · Harm Reduction

    BIDI product received a market denial letter from the FDA

  • NCT00751101 · Terminated · Breast Neoplasms

    Low Accrual

  • NCT00553709 · Terminated · Vomiting

    Unexpected difficult recruitment. Study drug expired

Trial sponsors

Funding

National Cancer InstituteUS$6.7mNational Institute on Drug AbuseUS$3.2mNational Heart, Lung, and Blood InstituteUS$234k16 grants since 2019

Latest

Nov 2025: 12Dec 2025: 2Jan 2026: 1Feb 2026: 0Mar 2026: 0Apr 2026: 0May 2026: 0Jun 2026: 1Jul 2026: 1Aug 2026: 8Sep 2026: 18Oct 2026: 447
JAMAHuman trial

Financial incentives raise quit rates in underserved adults

Six-month sustained abstinence reached 8.8% with incentives plus free medication, versus 4.3% with usual care and 5.1% with usual care plus free…Six-month sustained abstinence reached 8.8% with incentives plus free medication, versus 4.3% with usual care and 5.1% with usual care plus free medication.