The prevention of heartworm is a particularly important part of your pet’s treatment routine, but selecting the right product can be time consuming.

Heartworms preventatives are often combined with a broad spectrum parasitic, but for greater convenience you might want to use a medication that also kills fleas.

Sentinel and Trifexis are both monthly chewable tablets that prevent heartworm and help to control roundworms, hookworms and whipworms in dogs. Sentinel Flavor Tabs can help to prevent flea infestations by preventing eggs from developing into adults. Trifexis kills adult fleas before they can lay eggs. It starts to work within 30 minutes of administration and reaches 100% effectiveness within 4 hours.

Sentinel Flavor Tabs are safe for use with dogs and puppies as young as 4 weeks old, with a body weight of at least 2lbs (0.9kg).Trifexis is safe for use in dogs and puppies at least 8 weeks of age, weighing 5 lbs (2.3kg)minimum.

Top tip: Once pets develop heartworm it can be very hard to treat, so prevention is always better than cure. Compare the major brands of heartworm preventatives.