Sanofi (SAN.PA) Stock Analysis & Winston Score

Sanofi is a large French pharmaceutical company that makes prescription medicines, vaccines, and consumer health products. Its biggest business is selling drugs that treat serious diseases like eczema, asthma, and rare blood disorders — with Dupixent, its top-selling drug, being one of the fastest-growing medicines in the world. Sanofi also makes vaccines through its Vaccines division and sells over-the-counter products like Allegra and Doliprane to everyday consumers. Sanofi earns most of its money by selling branded prescription drugs to hospitals, pharmacies, and healthcare systems, with additional revenue from vaccine contracts and consumer health sales. The company operates globally, with strong presence in Europe, the United States, and emerging markets, generating roughly €40 billion in annual revenue. Its main competitive advantage is its deep pipeline of biologics and specialty medicines, but its biggest risk is heavy dependence on Dupixent — a single drug that now drives a large share of total sales and profit growth.