Comparing Amantadine, Pramipexole, and Quetiapine for Treatment-Resistant Depression

Comparative Efficacy of Antidepressant Augmentation With Amantadine vs Pramipexole vs Quetiapine in Treatment-resistant Unipolar Depression: A Randomized Controlled Trial.

Phase 4 Interventional All India Institute of Medical Sciences, Bhubaneswar · NCT04936126

This study is testing whether adding Amantadine, Pramipexole, or Quetiapine to the usual antidepressant Sertraline can help people with treatment-resistant depression feel better.

Quick facts

PhasePhase 4
Study typeInterventional
Enrollment150 (estimated)
Ages18 Years to 60 Years
SexAll
SponsorAll India Institute of Medical Sciences, Bhubaneswar Academic / other
Locations1 site (Bhubaneswar, Orissa)
Trial IDNCT04936126 on ClinicalTrials.gov

What this trial studies

This clinical trial aims to evaluate the efficacy and safety of three different medications—Amantadine, Pramipexole, and Quetiapine—as augmentations to SSRIs in patients with treatment-resistant depression (TRD). The study will involve 150 patients who are currently on Sertraline and will assess changes in depression severity using the Hamilton Depression Scale over an 8-week period. Additionally, the trial will measure serum levels of Brain-derived neurotrophic factor (BDNF) and Nerve growth factor (NGF) to explore their correlation with treatment outcomes. The study is designed as a prospective, randomized, single-blind, controlled trial conducted over three years.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18-60 with unipolar treatment-resistant depression currently on Sertraline.

Not a fit: Patients with bipolar disorder, those on antidepressants other than Sertraline, or individuals with significant co-morbid conditions may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide new effective treatment options for patients suffering from treatment-resistant depression.

How similar studies have performed: While there have been studies on antidepressant augmentation, this specific comparison of Amantadine, Pramipexole, and Quetiapine in TRD is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Patients with unipolar depression clinically diagnosed as TRD, who are currently on Sertraline treatment (dose range = 100-200 mg/day)
2. Patients aged 18-60 years of either sex

Exclusion Criteria:

1. Patients with Bipolar affective disorder
2. Patient with TRD on antidepressants other than Sertraline
3. History of psychoactive substance abuse or dependence
4. Co-morbid psychiatric, major medical, or neurological disorders
5. History of organicity or significant head injury
6. Pregnant and lactating women

Where this trial is running

Bhubaneswar, Orissa

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Treatment Resistant DepressionAugmentationAmantadinePramipexoleBDNFNGF
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.