Cephalexin 300 mg Tablets for cat
Kephelexin Vet Cephalexin 300 mg Tablets contain cephalexin, a first-generation cephalosporin antibiotic widely used in veterinary medicine to treat bacterial infections in cats. Cephalexin works by killing susceptible bacteria and is commonly prescribed for skin infections, urinary tract infections (UTIs), respiratory infections, and wound-related abscesses.
This formulation is designed for oral use and should only be administered under veterinary supervision.
How Cephalexin Works
Cephalexin is bactericidal, meaning it kills bacteria rather than simply stopping their growth.
It works by:
- Binding to penicillin-binding proteins (PBPs)
- Disrupting bacterial cell wall synthesis
- Weakening bacterial structural integrity
- Causing bacterial rupture and elimination
It is effective against many Gram-positive bacteria and some Gram-negative organisms commonly responsible for feline infections.
Veterinary Indications
Kephelexin Vet Cephalexin 300 mg Tablets are commonly prescribed for:
Skin & Soft Tissue Infections
- Bite wounds
- Abscesses
- Pyoderma
- Infected cuts or lacerations
Urinary Tract Infections (UTIs)
- Bacterial cystitis
- Urethral infections
Respiratory Infections
- Bacterial bronchitis
- Upper respiratory bacterial involvement
Post-Surgical Infection Prevention
- After spay/neuter
- Wound contamination cases
Bone & Joint Infections (Advanced Cases)
- Osteomyelitis (under strict veterinary supervision)
Whenever possible, bacterial culture and sensitivity testing is recommended.
Recommended Dosage
⚠ Dosage must be determined by a veterinarian based on weight and infection severity.
General Guideline
22–30 mg/kg every 8–12 hours (commonly twice daily)
Reference Dosage Table (Illustrative Only)
| Cat Weight | Approximate Dose | Tablet Fraction (300 mg) | Frequency |
| 2–3 kg | 44–90 mg | ⅙–⅓ tablet | Every 12 hrs |
| 4 kg | 88–120 mg | ¼–½ tablet | Every 12 hrs |
| 5 kg | 110–150 mg | ½ tablet | Every 12 hrs |
| 6–7 kg | 132–210 mg | ½–¾ tablet | Every 12 hrs |
| 8+ kg | 176–240+ mg | ¾–1 tablet | Every 12 hrs |
Typical duration: 7–14 days. Bone infections may require longer therapy under monitoring.
Never stop treatment early unless instructed by your vet.
Administration Instructions
- Can be given with or without food
- Giving with food may reduce vomiting
- Ensure the full tablet dose is swallowed
- Maintain consistent dosing schedule
- Complete the full antibiotic course
If a dose is missed, give it as soon as remembered unless near the next scheduled dose.
Safety & Precautions
Use Only Under Veterinary Supervision
Cephalexin should not be used without confirmed bacterial diagnosis.
Do NOT Use If
- Cat has known allergy to cephalosporins
- History of severe beta-lactam antibiotic reaction
Use With Caution In
- Cats with kidney disease
- Cats with liver impairment
- Elderly cats
- Pregnant or lactating queens (vet approval required)
Since cephalexin is primarily eliminated through the kidneys, renal monitoring may be advised for long-term use.
Possible Side Effects
Cephalexin is generally well tolerated.
Common (Usually Mild)
- Vomiting
- Diarrhea
- Reduced appetite
- Mild lethargy
Rare but Serious
- Facial swelling
- Hives
- Difficulty breathing
- Severe diarrhea
- Seizures (rare, overdose cases)
Seek veterinary attention immediately for severe reactions.
Drug Interactions
Inform your veterinarian if your cat is taking:
- Other antibiotics
- Aminoglycosides
- Anti-inflammatory drugs
- Antacids
- Immunosuppressants
Benefits of Kephelexin Vet Cephalexin 300 mg Tablets
- Broad antibacterial coverage
- Effective for skin and wound infections
- Reliable UTI treatment
- Rapid onset of action (improvement often seen within 48–72 hours)
- Cost-effective antibiotic option
- Long history of veterinary use
Responsible Antibiotic Use
- Follow prescribed dosage precisely
- Complete full course of treatment
- Do not share medication between pets
- Avoid leftover antibiotic reuse
Improper use contributes to antibiotic resistance.
Storage Instructions
- Store in a cool, dry place
- Keep away from moisture and direct sunlight
- Keep out of reach of children and pets
Frequently Asked Questions
Can Cephalexin treat viral infections?
No. It is only effective against bacterial infections.
What if my cat vomits after dosing?
Contact your veterinarian before re-dosing.
How soon will improvement be visible?
Most cats show improvement within 2–3 days, but the full course must be completed.







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