Can I use a syringe to split flea & tick spot-on for multiple dogs?

Definitely get PYY the smaller size. It's never recommended to try to cut a larger dose of the medication in half because you could either under dose your dog, or accidentally overdose them. I hope this helps!

The short answer is...it is not recommended in most situations. Combining different medications may increase the risk of negative side effects, adverse reactions or can lead to an overdose situation which could put your pet's life at risk. Due to the variety of [different products](https://www.petcoach.co/article/should-you-use-a-prescription-flea-and-tick-preventive) available on the veterinary market today, pet owners are encouraged to discuss the [best preventative option](https://www.petcoach.co/article/whats-the-difference-between-oral-and-topical-flea-and-tick-preve) for their individual pet with their veterinarian. If a pet has[ fleas](https://www.petcoach.co/article/fleas-life-cycle-anatomy-disease-transmission), most pet owners want to find the fastest treatment option available. In these cases, Capstar ([nitenpyram](https://www.petcoach.co/pet-medication/nitenpyram)) is an oral flea medication available over the counter for dogs and cats that starts treating fleas in 30 minutes and kills 90 percent of adult fleas on a pet within four hours. While Capstar dosing can continue as frequently as every day, topical flea and tick preventatives can be used in conjunction with this oral medication to provide longer lasting treatment and prevention. Oral [flea and tick preventives](https://www.petco.com/shop/en/petcostore/category/dog/dog-and-puppy-flea-and-tick) available for dogs with a prescription from your veterinarian are Credelio, Nexgard, Simparica, and Bravecto. Products that are available with a prescription from your veterinarian for flea treatment include Comfortis or Trifexis. These products also begin to kill fleas quickly and provide ongoing prevention, and do not usually require the concurrent use of a topical medication. If a topical [flea preventative fails](https://www.petcoach.co/article/6-reasons-your-flea-prevention-isnt-working), most oral products can be safely used concurrently. ### Capstar is a trademark of Elanco or its affiliates.

I don't recommend breaking these pills in half. Due to the manufacturing process, we can't guarantee that the drug is evenly distributed in the pill. So by giving half, you could be giving all or none of the active ingredients. It would be best to have the appropriate prescription for Rose.

I would not recommend it. It would be difficult to ensure that the appropriate amount of medication is coming from the collar so that the dogs are protected. You should buy two collars in the appropriate sizes.

Ideally, you should return the product and exchange it for the appropriate size based on your dog's current weight. Manufacturer's packaging protects the product from 2 important things: light and air. Drugs and insecticides can be destroyed and rendered ineffective if mishandled. Keep in the syringe, expel all bubbles, and store in a cool, dark place. Refrigeration is ideal, but under the sink or other ‘chemical repository’ is ok. Airtight tupperware is best as some of these insecticides are volatile. [Revolution](https://www.petcoach.co/pet-medication/selamectin) is very volatile and must be stored chilled once packaging is breached. Do not freeze. [Frontline Plus](https://www.petcoach.co/pet-medication/frontline) (Fipronil & (s)-methoprene), use the following guidelines: The dose is 0.0305ml/pound. Multiply 0.0305 times your pet’s weight for dose (package instructions) Dogs 11-22 pounds - 0.67ml 0.6ml for 20lbs 0.75 for 25lbs Dogs 23-44 pounds - 1.34ml 0.9ml for 30lbs 1.5 for 50 lbs Dogs 45-88 pounds - 2.68ml 1.8ml for 60lbs 2.68 for 88lbs Dogs 89-132 pounds - 4.0ml 2.7ml for 90lbs 4.0 for 133lbs

No, this would not be recommended. Given the weight difference, you would likely need multiple doses which could easily lead to overdose. Use a product specifically for dogs. Talk with your veterinarian about the safest, most effective options.

With medications in tablet form, you can certainly cut them in half and still be sure that you are giving half of the medication. Unfortunately with chewable medications (like Nexgard, Heartgard, etc.), splitting a dose in half does not ensure that half of the medication will be given. The active ingredients are mixed throughout the chews, but not necessarily in a uniform way. To answer your question, no, you shouldn't give Frosty half of a Nexgard. Instead, see if you can exchange the product for the correct size. It's likely that your vet will be able to prescribe a single dose while you sort out the exchange process. I hope that everything goes well!