More Contact Info

Toll-Free Number:

(800) 444-2080

Customer Service:

(877) 264-2454

(732) 594-4000

(617) 992-2000

(215) 652-5000

(215) 652-7487

(800) 224-5318

(800) 211-3573

(866) 349-3497

(908) 423-5000

(908) 423-3000

(800) 800-4857

(800) 567-2594

(800) 347-1282

(866) 776-8364

(800) 339-0400

(800) 727-5400

Canada Location

+1 514 428 7920

Headquarters:

(908) 740-4000

Investors:

(908) 740-1468

Legal:

(800) 672-6372

Toll Free in the US

(855) 344-4971

Toll Free in the US

Media:

(973) 275-7075

Corporate media relations

(908) 740-5633

For general media questions

(202) 508-4567

Policy media relations

Other Info

Other Info (opening hours):

Hours:

Monday – Friday: 8:30 am – 5:30 pm ET

Mailing Address:

Privacy Office

UG4B-24

351 N. Sumneytown Pike

North Wales, PA 19454

Company Address

Merck

2000 Galloping Hill Road

Kenilworth,

United States

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Complaints & Reviews — Merck

3 Aug, 2021

Optimmune

Good Afternoon! I’m writing about a problem I keep having with your Optimmune product. I have horses and my vet prescribed Optimmune for her serious eye problem. She will be on this product for the rest of her life. She is to be given this eye ointment 2 times a week in both eyes. I will be... Read more➤

Insurance

Most Reviewed

6 Apr, 2021

"Inquiring about why you haven’t send me the items I had order two months or more ago. I like to get a call back or an email explains and or my money back. It is unacceptable."