Pfizer, Inc. is a research-based, global biopharmaceutical company. The company's diversified global healthcare portfolio includes human and animal biologic and small molecule medicines and vaccines, as well as nutritional products. It also collaborates with other biopharmaceutical companies, healthcare providers, governments and local communities to support and expand access to reliable, affordable healthcare around the world. It operates through five operating segments: Primary Care, Specialty Care and Oncology, Established Products & Emerging Markets, Animal Health, and Consumer Healthcare. The Primary Care segment includes products in therapeutic and disease areas: Alzheimer's disease, cardiovascular, erectile dysfunction, genitourinary, major depressive disorder, pain, respiratory and smoking cessation. The Specialty Care and Oncology segment comprises the Specialty Care business unit and the Oncology business unit. The Specialty Care business unit includes products in the following therapeutic and disease areas: anti-infectives, endocrine disorders, hemophilia, inflammation, multiple sclerosis, ophthalmology, pulmonary arterial hypertension, specialty neuroscience and vaccines. The Oncology business unit includes pharmaceutical products addressing oncology and oncology-related illnesses. The Established Products & Emerging Markets segment comprises the Established Products business unit and the Emerging Markets business unit. The Established Products unit includes pharmaceutical products that have lost patent protection or marketing exclusivity in certain countries and/or regions. The Emerging Markets unit includes human prescription pharmaceutical products sold in emerging markets, including Asia, Latin America, Middle East, Africa, Central and Eastern Europe and Turkey. The Animal Health & Consumer Healthcare segment comprises the Animal Health business unit and the Consumer Healthcare business unit. The Animal Health unit includes products and services to prevent and treat disease in livestock and companion animals, including vaccines, parasiticides and anti-infectives. The Consumer Healthcare segment includes non-prescription products in the following therapeutic categories: dietary supplements, pain management, respiratory and personal care. The company was founded by Charles Pfizer and Charles Erhart in 1849 and is headquartered in New York, NY.