Fish Flex (Cephalexin) 250mg – 100 Capsules | Trusted Aquarium Antibiotic

Fish Flex (Cephalexin) 250mg Capsules deliver powerful, broad-spectrum antibacterial protection for freshwater and marine ornamental fish. Designed to treat both internal and external infections such as fin rot, skin ulcers, and bacterial gill disease, Fish Flex is a reliable, dissolvable capsule solution ideal for safe aquarium use.

Made with Cephalexin Monohydrate, a well-established antibiotic, this treatment promotes fast recovery and helps maintain a balanced aquatic environment. Its flexible administration method—either through water or food—makes it easy to treat your fish without disrupting your tank.

Key Benefits of Fish Flex Cephalexin 250mg

• Broad-Spectrum Antibacterial Coverage: Effectively combats gram-positive and gram-negative bacteria.

• Supports Fast Recovery: Reduces infection symptoms quickly, promoting healing of wounds and ulcers.

• Aquarium-Safe Formula: Designed for use in freshwater and saltwater tanks without harming beneficial bacteria.

• Flexible Application: Use in water treatment or mix with food for internal infection targeting.

• Pharmaceutical-Grade Quality: Manufactured for purity, consistency, and effectiveness.

Explore our Fish Flex collection to find additional strengths and related products.

Directions & Dosage

• Dosage: 1 capsule per 20 gallons of aquarium water

• Application:

  • Water Treatment: Dissolve directly into tank water

  • Food Treatment: Mix capsule contents with food for internal treatment

• Duration: Use once daily for 5–7 days

Always consult an aquatic veterinarian for species-specific recommendations.

Symptoms Treated with Fish Flex

• Fin or tail rot

• Skin ulcers

• Gill inflammation or discoloration

• Red streaks or lesions

• Lethargy and loss of appetite

Ingredients

• Active Ingredient: Cephalexin Monohydrate (250mg per capsule)

• Capsule Base: Gelatin and inert pharmaceutical excipients

Precautions & Storage

• For ornamental fish only – not for fish used for food

• May affect invertebrates; treat separately in a hospital tank

• Store in a cool, dry area between 59°F and 86°F

• Keep out of reach of children and pets

FAQs – Fish Flex Cephalexin 250mg

Q: Can Fish Flex treat internal infections?
A: Yes, when mixed with food, it can target internal bacterial infections.

Q: Is this safe for saltwater tanks?
A: Yes, Fish Flex is safe for both freshwater and saltwater aquariums.

Q: Can it be combined with other medications?
A: Only under veterinary supervision, as drug interactions may occur.

Q: Does this treat fungal infections?
A: No. Use an antifungal such as Reef Flux (Fluconazole) for fungal conditions.

Q: Will it harm beneficial bacteria?
A: Minimal impact when used as directed. Consider probiotics post-treatment.

Q: When will I see improvement?
A: Most fish begin improving within 3–5 days. Monitor progress closely.

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