Hopefully your vet is someone who is trustworthy and who you can have a decent conversation with about your concerns. All medications have pros and cons. You just have to figure out what advantage outweighs the disadvantage. Even a common aspirin or Tylenol has a ten page write up about the concerns.
Since heart worm is a prevalent problem in your area it is a major concern. While the disadvantages of the medication must be less since the product has been approved for use. Talk to you vet. Hopefully he has read the actual reports on the testing and knows what to tell you.
It's true that the internet is not the best source of information sometimes, especially when you are not familiar with who is doing the writing. It is usually difficult to find the independent research results that have been done on any topic. Many studies on ingredients have been done by someone who hired a researcher to give them the results they wanted. That is why you need to discuss it with someone who has an inside view of the topic. |