๐Ÿ’Š Amoxicillin Dosage for Dogs Chart: A Weight-Based Guide

The use of antibiotics in dogs is a crucial topic, and one of the commonly prescribed antibiotics is Amoxicillin. While it is often prescribed by veterinarians for various infections, knowing the exact dosage based on your dog’s weight is crucial.

What is Amoxicillin?

Amoxicillin is an antibiotic used to treat infections caused by bacteria. It falls under the aminopenicillin category and is effective against respiratory infections, urinary tract infections, infections of the skin, and gastrointestinal systems, as well as Lyme borreliosis.

Brands Available: Amoxilยฎ, Amoxi-Tabsยฎ, Amoxi-Dropยฎ, Trimoxยฎ

Key Points to Consider

Species: Besides dogs, Amoxicillin can also be used in cats, ferrets, hedgehogs, birds, and reptiles.

Pregnancy and Lactation: Its safety during pregnancy and lactation in pets hasn’t been firmly established.

Side Effects: Common side effects include allergic reactions, loss of appetite, drooling, vomiting, nausea, and diarrhea.

Approval: Amoxicillin is FDA approved.

Amoxicillin Dosage Chart for Dogs by Weight

Dog’s Weight (lbs) Dosage (mg) Frequency
5 25 – 50 mg Every 8-12 hours
10 50 – 100 mg Every 8-12 hours
20 100 – 200 mg Every 8-12 hours
30 150 – 300 mg Every 8-12 hours
40 200 – 400 mg Every 8-12 hours
50 250 – 500 mg Every 8-12 hours
60 300 – 600 mg Every 8-12 hours
70 350 – 700 mg Every 8-12 hours
80 400 – 800 mg Every 8-12 hours
90 450 – 900 mg Every 8-12 hours
100 500 – 1000 mg Every 8-12 hours

Note: Always consult with a veterinarian before administering any medication to your pet.

Best Practices

Administer with Food: Giving Amoxicillin with food can help in reducing the potential for gastrointestinal issues.

Stick to the Schedule: If you miss a dose, give it as soon as you remember, but if it’s close to the next scheduled dose, skip the missed dose and continue with the regular schedule.

Monitor for Allergic Reactions: Look out for hives, swelling of the lips or tongue, or difficulty breathing. If noticed, contact your vet immediately.

Storage: Tablets and oral suspensions should be stored in a cool, dry place, away from direct sunlight.


Administering the right dosage of Amoxicillin to your dog is essential for ensuring effective treatment and minimizing side effects. While the above chart provides a general guideline, it’s always best to consult with your veterinarian for precise dosing and to address any concerns or questions you might have. After all, our furry friends rely on us to make the best decisions for their health!


1. Why is Amoxicillin prescribed to dogs?

Amoxicillin is a broad-spectrum antibiotic, primarily prescribed to combat bacterial infections in dogs. It’s effective against a variety of bacteria that might cause respiratory, skin, urinary tract, and gastrointestinal infections.

2. Can I give my dog human Amoxicillin?

While the active ingredient is essentially the same in both human and veterinary formulations, there may be differences in dosage and inactive ingredients. Always consult a vet before giving any medication to ensure it’s safe and effective for your pet.

3. How soon can I expect results?

In many cases, you may start to see an improvement in your dog’s symptoms within 48-72 hours. However, it’s crucial to complete the entire course of medication to prevent the resurgence of the bacterial infection or the development of antibiotic-resistant strains.

4. What should I do if my dog misses a dose?

If you miss giving your dog a dose, administer it as soon as possible. If it’s close to the next scheduled dose, skip the missed one. Never double up on doses, as this can lead to potential overdose.

5. Are there any interactions with other drugs?

Amoxicillin can interact with other medications, such as probenecid, allopurinol, and other antibiotics. Inform your vet about any other medicines or supplements your dog might be taking.

6. How should I store Amoxicillin?

For tablets, store them in a cool, dry place away from sunlight. The oral suspension should be refrigerated after reconstitution and used within a stipulated time frame, usually 10-14 days.

7. My dog developed a rash after taking Amoxicillin. What should I do?

Discontinue the medication and reach out to your veterinarian immediately. A rash can be indicative of an allergic reaction, and it’s vital to address it promptly.

8. Can I stop the medication once my dog feels better?

Even if your dog shows signs of improvement, it’s essential to continue the full course of Amoxicillin unless advised otherwise by a vet. Premature discontinuation can lead to partial treatment and cause the infection to return or the bacteria to become resistant.

9. What happens in case of an overdose?

If you suspect your dog has ingested an excessive amount of Amoxicillin, watch for signs of overdose, which might include muscle spasms, severe vomiting, or unusual behavior. Seek emergency veterinary care immediately.

10. How does Amoxicillin compare to other antibiotics like Clavamox?

Amoxicillin is a primary antibiotic, whereas Clavamox combines Amoxicillin with clavulanic acid, which helps combat antibiotic-resistant strains of bacteria. Your vet will decide which one is more suitable based on the type and severity of the infection.

11. How does Amoxicillin work against bacterial infections in dogs?

Amoxicillin functions by inhibiting the bacterial cell wall synthesis. This action disrupts the structural integrity of bacterial cells, causing them to burst and subsequently die, effectively combating the infection.

12. Are there any specific breeds more susceptible to side effects?

Generally, Amoxicillin’s effects are based on individual reactions rather than breed-specific susceptibilities. However, always provide your vet with a detailed health history of your dog, including its breed, so they can monitor any potential breed-related reactions.

13. Should I be concerned about antibiotic resistance?

Overuse or incorrect use of antibiotics, like not completing the full course, can contribute to antibiotic resistance. This is where certain bacteria evolve and render antibiotics ineffective. Always adhere to the dosage and duration prescribed by your vet.

14. Can I give Amoxicillin with food?

Yes, Amoxicillin can be given with food. In fact, administering it with food can help reduce the risk of stomach upset, a common minor side effect.

15. How is Amoxicillin’s dosage determined?

The dosage is typically determined by your dog’s weight, the severity and type of infection, and any pre-existing health conditions. Always rely on a vet’s prescription rather than self-diagnosing and administering.

16. How should any remaining oral suspension be disposed of?

Unused or expired oral suspensions should not be poured down drains or flushed. Instead, consult your veterinarian or local pharmacy about proper disposal methods to ensure environmental safety.

17. Are there natural alternatives to Amoxicillin?

While some natural remedies claim to combat infections, they might not be as effective as antibiotics like Amoxicillin. Before trying any alternative, discuss with your veterinarian to ensure it’s safe and appropriate for your dog’s specific condition.

18. What if my dog is on other medications?

Always provide a comprehensive list of other medications, including over-the-counter drugs and supplements, to your vet. They will evaluate potential drug interactions and adjust prescriptions accordingly.

19. Can pregnant or nursing dogs take Amoxicillin?

Amoxicillin’s safety for pregnant or lactating dogs hasn’t been conclusively established. Always consult your vet in such scenarios. They will weigh potential risks against benefits before making a recommendation.

20. Does Amoxicillin treat viral or fungal infections?

No, Amoxicillin is specifically an antibiotic, meaning it targets bacterial infections. It is not effective against viral or fungal pathogens. If you suspect your dog has a viral or fungal infection, seek guidance from your veterinarian.


Leave a Reply

Your email address will not be published. Required fields are marked *

Back to Top