The best ways to get in touch with Allegra. All the best ways to contact Allegra customer service: Phone, chat, email, Facebook, Twitter and more.
Customer service options, knowledge base, FAQ, self service and contact forms on the Allegra website: Visit.
Customer service on Allegra Twitter account: click here.
Customer service on the official facebook page of Allegra: click here.
The postal mail address of Allegra customer service / head office is: Sanofi US
55 Corporate Drive
Bridgewater, NJ 08807.
Allegra customer service contact number: 866-844-2798.
Phone support hours: Not published.
Sanofi US: 800-981-2491
Contact Allegra customer service by email: [email protected] .