25/02/2026
Phases of Clinical Trials (Phase 1–4 Explained)
Before a new treatment becomes available to the public, it goes through carefully monitored clinical trial phases to ensure safety and effectiveness.
Let’s understand each phase in simple terms:
🧪 Phase 1 – Safety First
Conducted on a small group of healthy volunteers or patients
Focus: Safety, dosage, and side effects
Goal: Determine safe dose range
👩⚕️ Phase 2 – Does It Work?
Conducted on a larger group of patients
Focus: Effectiveness and continued safety evaluation
Goal: See how well the treatment works
📊 Phase 3 – Comparison & Confirmation
Conducted on large patient groups
Focus: Compare new treatment with standard treatment
Goal: Confirm effectiveness, monitor side effects, collect more safety data
✅ Phase 4 – After Approval
Conducted after the treatment is approved
Focus: Long-term safety and effectiveness
Goal: Monitor real-world use and rare side effects
Every approved medicine you use today has successfully passed through these phases.
💙 Clinical Research as a Care Option
Because safe innovation takes careful steps.
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