Pharma BD Deal Intelligence

Jazz Pharmaceuticals PLC / GW Pharmaceuticals

2021 · Acquisition/Merger · $7.2B · Complete

Jazz Pharmaceuticals' $7.2B acquisition of GW Pharmaceuticals landed the company its blockbuster: Epidiolex, the first FDA-approved cannabidiol drug, treating epilepsy. The deal diversified Jazz well beyond its sleep-disorder roots and paid off commercially, though it came at a steep multiple for a single-asset target.

CALLED IT — OFF BY 3
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The coverage arc

May 05, 2021 The Motley Fool Bullish

Jazz Pharmaceuticals' acquisition of GW Pharmaceuticals closes, creating an innovative, high-growth global biopharma leader with a diversified portfolio…

Sep 01, 2021 Nature Reviews Drug Discovery Neutral

Jazz acquired GW Pharmaceuticals for $7.2B for Epidiolex (cannabidiol) for epilepsy.

Feb 24, 2026 Jazz Pharmaceuticals Bullish

Epidiolex/Epidyolex achieved blockbuster status in 2025 with net product sales increasing 9% to $1.1 billion in 2025.

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Jazz acquired GW Pharmaceuticals for $7.2B for Epidiolex (cannabidiol) for epilepsy.

Key facts

Disease & market context

Treatment-Resistant Epilepsy

3.4M US cases/yr · $8.5B Global Epilepsy Market (2024)

Disease Overview

Treatment-resistant epilepsy affects approximately 30% of epilepsy patients who do not respond adequately to two or more antiseizure medications. Epidiolex (cannabidiol) was the first FDA-approved CBD-based medicine, specifically for Lennox-Gastaut syndrome, Dravet syndrome, and tuberous sclerosis complex.

Cannabinoid Therapeutics

Epidiolex reached ~$510M in 2020 sales growing 70%+ YoY. Jazz expanded label indications and pursued nabiximols for MS spasticity. The cannabinoid science platform represents a unique differentiated approach in neurology.

Deal timeline

Related deals — scored

DealYearValueOutcome
Jazz Pharmaceuticals PLC / GW Pharmaceuticals (this deal)2021$7.2B77
Jazz Pharmaceuticals PLC / Celator Pharmaceuticals2016$1.5B73
Jazz Pharmaceuticals PLC / AbCellera Biologics Inc.2026$848M50
Jazz Pharmaceuticals PLC / Actio Biosciences, Inc.2026$1.3B
Jazz Pharmaceuticals PLC / Chimerix, Inc.2025$935M
Novartis AG / Advanced Accelerator Applications S.A.2017$3.9B98
Allergan plc / Merck & Co., Inc. (CGRP receptor antagonist program)2015$250M91

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