Collie breeder reports safe parasite protection products for dogs with MDR1.

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Local Jacksonville, FL Collie breeder and blogger Emily Sowulewski, reports safe products to use on dogs with the MDR1 gene mutation in a recent blog post.

JACKSONVILLE, FL / April 18, 2019 – Collie breeder and blogger, Emily Sowulewski, reported safe parasite protection products for dogs with the MDR1 gene mutation in a recent blog article published on Collie Chatter.

Frustrated with the lack of information available online concerning which products are safe to use on dogs with the MDR1 gene, Emily Sowulewski decided to research products herself and share the information with her readers.

Emily states, “My personal quest to find the safest parasite protection for Collies known to carry the MDR1 (Multi Drug Resistance) gene led me on a merry chase. MDR1 is a drug sensitivity that affects the majority – approximately 70%-75% of Rough and Smooth Collies in the USA and potentially worldwide. There are 13 other at-risk breeds including Border Collies, Australian Shepherds, German Shepherds, Shetland Sheepdogs, and Old English Sheepdogs, plus herding breed mixes.”

Emily continues, “The lack of accessible information on the topic of safe parasite protection left me so frustrated that I decided to write my own article. So here’s the culmination of my research: information gathered from laboratory case studies, veterinarians, and Collie owners, breeders, and exhibitors. Basically, I did the boring work to bring you the helpful information.”

In her article, Emily explains all the available heartworm medications on the market are a variation of what is clinically known as the ML (macrocyclic lactone) compound. She goes on to mention that not all ML’s are created equal and some are safer than others.

Emily points out most of the products she identified as safe are chemical compounds. Any product containing chemical compounds has more potential to cause a reaction than organic ones. In Emily’s experience, chemical-based products appear to be much more effective than water-based ones.

Emily concludes that pet owners living in colder climates are able to give pets a break from chemicals when parasites are dormant during cold seasons. More information about MDR1 and safe parasite protection for dogs with the MDR1 gene mutation can be found on Emily’s article at

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