Since these are prescription medications, you will need a valid authorization from your veterinarian before the order can be shipped.

: Offers various weight-based boxes (e.g., White for 51–100 lbs).

Sentinel Heartworm Flavor Tablets for Dogs - Oral Tabs - Allivet

If you are looking for or Sentinel Spectrum , these are prescription-only oral medications for dogs that prevent heartworms and control other parasites like fleas, hookworms, and roundworms.

In the tech world, "Sentinel" usually refers to one of two major AI-powered security platforms used by businesses to detect and respond to cyber threats.