What is Rilexine (Cephalexin) Dosage For Dogs? | Safety Precautions

Rilexine® (Cephalexin) chewable tablets for dogs is a prescription broad-spectrum antibiotic medication belonging to cephalosporin drugs commonly used to treat canine pyoderma.

Other infections can also be treated with medicine, such as bacterial infections, skin infections, and urinary tract infections.

Other forms of Cephalexin can also be used for dogs; however, Rilexine Tablets are specially formulated for canine use and considered a safe and effective form of Cephalexin for your pet. 

Rilexine chewable tablets for dogs by Virbac tablets are usually supplied in different variants of strength, including 75 mg, 150 mg, 300 mg, and 600 mg. 

Choosing the right form of antibiotic and administering it in the correct dosage is essential. Overdosing can be toxic for your puppy and can cause health complications.

This blog post will guide you about the safe administration of Rilexine® (Cephalexin) to dogs, its uses, safe dosage, and possible side effects.

We have also included a  Cephalexin dose calculator for dogs so that you can easily find the accurate dosage for your pet. 

Rilexine for dogs
Medicine NameRilexine®
Active IngredientCephalexin
FDA ApprovedYes
Prescription RequireYes
Safe for all dogsNo
Available formsOral Chewable Tablets:75 mg, 150 mg, 300 mg, and 600 mg.
Storage RequirementsRoom temperature + Tightly sealed 
Other Cephalexin BrandsKeflex®, Vetolexin®, Biocef®, Keftab®, Ceporex®, Cephacare®, Cefaseptin®, Cephorum®, Cefabactin®, Petalexin® ,Therios® 

Rilexine Dosage For Dogs

Rilexine Dosage For Dogs

The ideal and safe Rilexine dosage for dogs is 22mg/kg (10 mg/lb) bid for a maximum of 28 days. For the treatment of certain canine infections, the dosage and duration of the treatment can be increased or decreased with the veterinarian’s advice only. 

In some conditions, the dosage of  Cephalexin can be increased to (22 to 40 mg/kg) three times a day.

Remember that Rilexine® (Virbac) chewable tablets are prescription medicine and can only be used with the veterinarian’s advice. 

Dosage Calculator

Veterinarians often prescribe Cephalexin at a dose of (22 to 40 mg/kg) two to three times a day.

Rilexine Dosage Chart For Dogs by Weight

Dog kg Weightlbs WeightRilexine 150 mg Tablets For DogsRilexine 300mg Tablets For DogsRilexine 600mg Tablets For Dogs
3 kg7 lbs1/2 1/4*
5 kg11 lbs1/2 1/3*
10 kg22 lbs1+1/2 1/2*
15 kg33 lbs2 1 1/2
20 kg44 lbs31+1/2 1/2
25 kg55 lbs*21
30 kg66 lbs*21
35 kg77 lbs*2+1/2 1+1/4
40 kg88 lbs*3 Tablets1+1/2
45 kg99 lbs**1+1/2
50 kg110 lbs**2

Cephalexin Dosage Chart For Dogs

Dog #kg Weight#lbs WeightCephalexin Dosage For Dogs (22 to 40 mg/kg)
3 kg7 lbs66mg-120mg
5 kg11 lbs110mg-200mg
10 kg22 lbs220mg-400mg
15 kg33 lbs330mg-600mg
20 kg44 lbs440mg-800mg
25 kg55 lbs550mg-1000mg
30 kg66 lbs660mg-1200mg
40 kg88 lbs880mg-1600mg
50 kg110 lbs1100mg-2000mg

We recommend going with the lower dose of Cephalexin for your pet. Only increase the amount from the minimum limit after consulting your veterinarian. 

Uses of Rilexine in Dogs

Rilexine Chewable Tablets can be used to Treat: 

Rilexine Side Effects in dogs

Administrating a safe dose of cephalexin is safe for canines; however, as with any other medicine, cephalexin, too, has some side effects.

Commonly reported cephalexin side effects in dogs are:

  • Vomiting
  • Diarrhea
  • Constipation
  • Abdominal pain 
  • Allergic Reactions (Fever, rashes, skin itchiness)
  • Lack of appetite
  • Facial swelling

If you notice any of the above-mentioned side effects, stop giving the next dose and make sure to contact your vet immediately for a checkup. 

Rilexine Overdose in Dogs

Overdosing your pet on any medicine can be toxic and can cause severe health issues. Rilexine Overdose in Dogs can develop poisonous reactions and can even be fatal.

Relaxing overdosing symptoms in dogs are:

  • Irregular breathing
  • Extreme restlessness
  • Pale Gums
  • Seizures
  • Excessive salivation
  • Frequent urinating

Which dogs should not take Rilexine® (Cephalexin)?

Canines allergic or hypersensitive to Cephalexin, penicillin or other cephalosporin medicine should not take Rilexine® (Cephalexin).

Pregnant and nursing dogs, puppies aged less than two months and pets suffering from health issues such as seizures, heart issues or liver and kidney issues should not take Cephalexin without vet advice. 

Safety Precautions:

  • Use the medicine with the vet’s advice and administer a safe dosage. 
  • Keep all drugs away from the reach of children and pets. 
  • The medicine can be administered with or without food. 
  • Make sure to complete the full treatment. Stopping the antibiotic while completing the dose can increase the risk of antibiotic resistance. 
  • Do not overdose. Keep a gap of at least 10 hours when using twice a day and at least 20 hours if using once a day. 
  • Pregnant, nursing or pet owners allergic or hypersensitive to the antibiotic should avoid giving the medicine. Prefer another member to administer the drug. 
  • Increase or decrease the amount with the veterinarian’s advice only. 

Which drugs can interact with Cephalexin?

Cephalexin may interact with certain medicines, including: 

  • Cephalosporin drugs (overdosing risk),
  • Cholestyramine
  • Chloramphenicol
  • Amphotericin B
  • Aminoglycosides
  • Warfarin. 
  • Estrogens
  • Metformin
  • Furosemide
  • Metoclopramide
  • Omeprazole 
  • Pantoprazole
  • Probenecid

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How much time does Cephalexin take to work on dogs?

Usually, Cephalexin starts its effects once absorbed in dogs’ bloodstreams. You may observe your dog’s condition improvements within 24-48 hours.

In some canines, you may see improvements within a week. Full recovery from the health issue will be observed after completing the full dosage course prescribed by your veterinarian.  

For more study: Reference


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