Anna asked in PetsDogs · 1 decade ago

What is the difference between oral and intravenous administration of antibiotics in dogs?


Well, yeah, that's sort of implicit... I was talking in regards to the dog's health.

Update 2:

My main concern being: should my dog develop any adverse side effects to cefalexin, wouldn't it be more dangeroushad it been administered full strength [15-day] directly into his bloodstream??

11 Answers

  • Roy <
    Lv 6
    1 decade ago
    Best Answer

    It's the same as in humans in that giving the drug by the intravenous route means that it can get to work straight away. However, sticking a needle into a vein is invasive and can cause infections, vein damage etc.

    When given orally, the drug first has to dissolve and then negotiate the GI tract and be absorbed into the blood stream. This takes time and the amount of drug available may depend on various factors eg absence/presence of food, whether there are any obstructions which may impede the absorption process, whether the animal is able to take the medication etc.

    Financially, intravenous injections will be more expensive and you will (probably) need a vet or nurse to give it, adding to the expense.

    In most cases, one would chose to use the oral route where possible, reserving the intravenous route for emergencies, initial dosing to get the levels up or where the drug isn't available in an oral formulation.

    In the case of severe adverse side effects eg anaphylaxis, you would expect them to normally occur on the second or subsequent dosing - if they were to occur when the injection was being given, they would be fairly quick to show and the vet would be able to give things like hydrocortisone to counteract them.

  • 1 decade ago

    There are several ways to administer medications internally. The first is orally which means that it is taken in by mouth. This is the way that owners can give medications to their dogs. The second is a sub cutaneous injection which means that it is give the dog an injection under the skin in the area between the skin and the muscle. The next way is an intramuscular injection where the medication is injected into a muscle. The last way is an intravenous injection. This is where medications are injected right into the blood stream. Different medications require different types of administration. The only way that a pet owner should use is the oral administration and only with the directions of a vet. All of the injections should be given by a licensed vet.

    Source(s): Over 40 years as an owner, breeder, trainer, handler, instructor.
  • 1 decade ago

    Intravenous antibiotics are applied directly into the bloodstream which allows the antibiotics to begin working faster. This approach is much more aggressive than oral antibiotics, which have to be ingested and then must dissolve in the stomach and then be absorbed into the bloodstream.

    ADD>If the vet recommends administering the meds intravenously, then it is obvious your dog needs. The vet will no better than you or me, discuss your concerns with him/her.

  • 1 decade ago

    If your dog is given antibiotics orally they will probably be put into his/her food and eaten. Intravenous antibiotics will require some kind of injection straight into the blood stream.

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  • 3 years ago


    Source(s): Ways to Build Muscle
  • ?
    Lv 7
    1 decade ago

    Oral administration would be put in the dog's mouth.

    Intravenous would be injected into his veins.

  • Anonymous
    1 decade ago

    oral goes into the mouth

    intravenous goes into a vein via hypodermic needle

  • 1 decade ago

    One is given by mouth, one is given by injection into the veins.

  • 1 decade ago

    one is put in the mouth and one is an injection

  • Anonymous
    1 decade ago

    usually intravenus gets in the system quicker

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