Wyeth is now a wholly owned subsidiary of Pfizer

According to the ClinicalTrials.gov registry, Wyeth is now a wholly owned subsidiary of Pfizer is linked to 31 US clinical trials across every stage of research activity. Of those, 0 studies are currently recruiting — about 0% of the sponsor's indexed portfolio — and 31 are already marked complete, representing roughly 100% of the total. Recruiting share is one of the more practical signals here: it reflects how much of a sponsor's research is presently open to new participants, while the completed share indicates the depth of finished work that has already contributed registry results. Both counts come directly from the public ClinicalTrials.gov dataset and are refreshed on the registry side; this page mirrors the latest data pull without altering it.

The phase mix for Wyeth is now a wholly owned subsidiary of Pfizer reports 13 late-stage studies (Phase 3 and Phase 4 combined) and 16 earlier-phase studies (Phase 1 and Phase 2). A portfolio weighted toward Phase 3 usually reflects an organization advancing candidates toward regulatory review, where the research centers on comparative efficacy and broader safety across larger populations. A heavier Phase 1 and Phase 2 tilt generally indicates exploratory work — safety, dosing, and early signal detection — and is common among research-forward sponsors that seed many early programs. Phase 4 entries, when present, track interventions already in real-world use and typically focus on long-term safety, effectiveness across subgroups, or formulation comparisons.

The top therapeutic focus area indexed for Wyeth is now a wholly owned subsidiary of Pfizer is Healthy with 5 linked trials, and 9 other condition areas appear in the top list above. That distribution is a quick read of where the organization concentrates its research attention; it does not imply product availability, market share, or any clinical endorsement. All numbers on this page come from ClinicalTrials.gov maintained by the National Library of Medicine, and counts can shift as new studies are registered or existing ones update their status. This information is provided for reference and educational purposes only, not as medical, investment, or regulatory advice — verify current details directly with ClinicalTrials.gov before relying on any figure here.

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainTrial Editorial

Wyeth is now a wholly owned subsidiary of Pfizer

Trial Pipeline

Multiple Dose Study Evaluating the Safety and Tolerability of NSA-789

Determine The Percentage Of Depressed Outpatients Who Do Not Effectively Metabolize Extended-release Venlafaxine HCl

Study Evaluating Desvenlafaxine Succinate Sustained-Release (DVS SR) In The Treatment Of Child And Adolescent Outpatients With Major Depressive Disorder

Study Evaluating The Safety And Tolerability Of ILV-094 In Subjects With Psoriasis

Study Evaluating The Safety, Tolerability And Immunogenicity Of A 13-Valent Pneumococcal Conjugate Vaccine (13vPnC)

Single Ascending Dose Study of the Safety, Tolerability, and Pharmacokinetics of GAP-134 Administered Intravenously

HCV-796 and Midazolam Drug Interaction Study in Healthy Subjects

Study Evaluating 13-valent Pneumococcal Conjugate Vaccine In Healthy Infants

Study of the Safety, Tolerability, Pharmacokinetics and Pharmcodynamics of ILV-094 in Healthy Subjects

Study To Evaluate The Pharmacokinetic Interaction Between PLA-695 And Methotrexate In Adults With Rheumatoid Arthritis

Study to Evaluate the Effects of Age & Gender on PK, Safety & Tolerability of HCV-796 Administered to Healthy Subjects

A Study Evaluating the Safety and Clinical Activity of HCV-796 in Treatment-Naive and Non-Responder Subjects

Study Comparing the Safety and Efficacy of Tigecycline With Ampicillin-Sulbactam or Amoxicillin-Clavulanate to Treat Skin Infections

Study Comparing the Affect of Bifeprunox Vs Olanzapine on Weight During the Treatment of Outpatients With Schizophrenia.

Study of the Safety and Efficacy of Desvenlafaxine Succinate for Vasomotor Symptoms in Postmenopausal Women

Study Evaluating the Gastrointestinal Safety of PLA-695 Compared to Placebo and Naproxen

Study Comparing Two Manufacturing Processes for Levonorgestrel 90 mg/Ethinyl Estradiol 20 mg (LNG/EE) in Healthy, Cycling Women

Study Evaluating Pantoprazole in Children With Gastroesophageal Reflux Disease (GERD)

Study Evaluating B-Domain Deleted Recombinant Factor VIII (BDDrFVIII, ReFacto AF) in Patients With Hemophilia A Undergoing Elective Major Surgery

Study Evaluating Pantoprazole Sodium Enteric-Coated Spheroid Suspension In Infants With Presumed GERD

Study Evaluating Bazedoxifene/Conjugated Estrogen Combinations in Vasomotor Symptoms Associated With Menopause

Study Evaluating Bifeprunox in Bipolar Depression

Study Evaluating Etanercept in Moderate to Severe Asthma

Study Evaluating Temsirolimus in Advanced Stage Squamous Cell Carcinoma of the Head & Neck

Study Evaluating SRA-333 in Mild to Moderate Alzheimer's Disease (AD)

Study Evaluating CMD-193 in Advanced Malignant Solid Tumors

Study Evaluating the Safety & Efficacy of DVS-223 SR for Relief of Vasomotor Symptoms Associated With Menopause

Study Evaluating Tigecycline Versus Imipenem/Cilastatin in Hospital-Acquired Pneumonia

Study Evaluating Pantoprazole in Peptic Ulcer Hemorrhage

An Open Parallel Study to Determine the Optimum Dosing Schedule for AS-101 in AIDS/ARC Patients

Study Evaluating MAC-321 in Non-small Cell Lung Cancer Refractory to Platinum-based Therapy

Phase Distribution

Therapeutic Areas

What the Pipeline for Wyeth is now a wholly owned subsidiary of Pfizer Shows

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