ARP poisoning can be prevented by following methods:

Packet Filtering:

Packet filters are capable for filtering out and blocking packets with conflicting source address information.

Avoid trust relationship:

Organization should develop protocol that rely on trust relationship as little as possible.

Use ARP spoofing detection software:

There are programs that inspects and certifies data before it is transmitted and blocks data that is spoofed.

Use cryptographic network protocols:

By using secure communications protocols like TLS, SSH, HTTP secure prevents ARP spoofing attack by encrypting data prior to transmission and authenticating data when it is received.