Essentially, drug interactions are extremely complex and linked to phar-macokinetics, which involve drug absorption, distribution, metabolism, and excretion. Role of Food and Nutrition There is a dynamic relationship between what we eat and the medications we take.
Remember that none of the flea/tick products or methods of control and prevention is 100% effective, 100% of the time. I believe Nexgard and Bravecto are safe and effective choices for most dogs and are a great alternative when topicals and collars are not an option.
The Paragard IUD is very effective when a woman is attempting to prevent pregnancy and is one of the most effective birth control methods on the market. They are 99.9% affective and can even prevent pregnancy after unprotected intercourse.