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Learn about the benefits of fish oil for dogs. Order online from Petco and save with Autoship or Curbside Pickup.
Updated on June 19th, 2026
Learn how to improve your dog's life with nutritional probiotics. Help your dog regardless of age or size & manage inflammation, gastrointestinal health & arthritis.
Updated on June 19th, 2026

Discover how to choose the best supplements for your pet’s health, from essential vitamins to joint support and digestion aids. Learn age-specific and seasonal supplement tips for cats and dogs.
Updated on June 19th, 2026
Learn about effective steps to prevent parasites in dogs hat can cause dog heartworm, Lyme disease and more.
Updated on October 23rd, 2025
Is your dog having trouble with hot spots or dermatitis? Learn how to identify, treat & prevent adverse skin conditions to keep your pup happy.
Updated on June 19th, 2026
Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Yes, doxycycline is used to treat tick borne diseases. It seems as though the doxycycline is coated in a probiotic. I can't say I've seen this form in the US but it should be fine. Have a good day!
Updated on September 24th, 2025
I am so sorry that Tucker has tested heartworm positive. I adopted a dog that was heartworm positive, so I certainly understand how difficult it is to make a decision on treatment. I am attaching a link below to the American Heartworm Society (AHS) which has a lot of good information for you. https://www.heartwormsociety.org/ The AHS does not recommend the "slow kill" method as it's treatment of choice, but does recommend the following for an alternative treatment if needed. They recommend Doxycycline and either ivermectin or topical Moxidextin. ("Topical moxidectin is now FDA-approved for use in heartworm-positive dogs.") They do not list ivermectin or topical Moxidextin as being better than the other, so they should have the same efficacy. Injectible Moxidectin (Proheart) is not listed by the AHS as recommended and the company that manufactures Proheart lists that it "should be used with caution in heartworm positive dogs". I am attaching the exact recommendation from the AHS below. " In cases where arsenical therapy is not possible or is contraindicated, the use of a monthly heartworm preventive along with doxycycline at 10 mg/kg BID for a 4-week period might be considered. An antigen test should be performed every 6 months and the dog not considered cleared until two consecutive NAD (no antigen detected) heartworm antigen tests, 6 months apart, have been obtained. If the dog is still antigen positive after one year, repeat the doxycycline therapy. Exercise should be rigidly restricted for the duration of the treatment process." So, I would recommend reviewing the AHS website, then discussing it further with your vet. Good luck! I hope that was helpful. Thanks for using PetCoach.
Updated on September 24th, 2025
We don't sell prescription drugs here since we are only a consulting forum. However, if you want to do comparison prices for drugs then the best resource is https://www.goodrx.com OR calling the pharmacy of your choosing directly. I wish you all the best and hope that you can find an affordable price for your pets medication. Take care!
Updated on September 24th, 2025
You can find this product at any of the online veterinary pharmacies. In order to find the best value I would recommend going on goodrx.com. On this website you will be able to type in the medication and dose and it will provide you with coupon codes and the location of where you need to obtain the product. Regardless of what site you use you will still need to obtain a prescription from your veterinarian. I always caution my clients when they are planning to purchase these types of products from pharmacies of unknown origin as we cannot be certain how the drugs are being stored and what source they are obtaining the drugs from. Do your due diligence before deciding on which place to use. I have had relatively good experiences with Valley Vet Supply.
Updated on September 24th, 2025
Hello, thank you for using Pet Coach. I am so sorry for you loss. I know it is difficult to lose part of your family under any circumstances. I am not quite sure why you are wondering about doxycycline though. As you know, it is an antibiotic and is not indicated in treating lymphoma. Prednisone is the only treatment if chemotherapy cannot be instituted. Prednisone is not a curative medication, it only works to slow the growth of the cancer. Doxycycline does not do anything to treat cancer. If you can provide more information as to why you are referring to the doxycycline we can maybe help you better. Again, I am sorry for your loss. Best wishes.
Updated on September 24th, 2025