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Fish Penicillin 250 mg

Fish Penicillin 250 mg is an aquarium antibiotic containing Penicillin, formulated to treat bacterial infections in ornamental fish. It helps manage common illnesses like fin rot, tail rot, and gill disease caused by susceptible gram-positive bacteria.

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Price : $29 - $169
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1 Bottle
$29
($29/Bottle)
3 Bottle
$85
($28.33/Bottle)
6 Bottle
$169
($28.17/Bottle)
BULK INQUIRY Talk with Experts
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SKU : Status : In Stock Coupon Code : FREE10
Created at : 09-04-2025
Author : Aston Carter
Updated at : 09-04-2025
Medically Reviewd By : Dr. Peter Hales

Fish Penicillin 250 mg is a pharmaceutical-grade antibiotic formulated specifically for the treatment of bacterial infections in ornamental and aquarium fish. Each tablet contains Penicillin (250 mg), a trusted bactericidal agent effective against a range of gram-positive and some gram-negative bacteria. Manufactured by reputable suppliers like Thomas Labs in the USA, Fish Penicillin offers aquarists a reliable and affordable solution to maintain fish health, combating common aquatic ailments with precision and ease.

Key Features

  • Active Ingredient: Penicillin (250 mg), a broad-spectrum antibiotic.
  • Purpose: Controls bacterial infections in fish, such as fin rot, tail rot, and pop-eye, caused by susceptible pathogens.
  • Packaging: Available in bottles of 30 or 60 tablets, sealed for safety with clear expiration dates and usage instructions.
  • Quality Assurance: Produced to USP-grade standards, ensuring high purity and potency for aquatic use.

Benefits

  • Targeted Bacterial Defense: Exerts a bactericidal action, eliminating harmful bacteria like Aeromonas and Flexibacter, restoring fish vitality.
  • Simple Administration: Water-soluble tablets dissolve easily, providing consistent treatment throughout the tank.
  • Safe for Fish: Designed exclusively for ornamental fish in freshwater and saltwater aquariums, minimizing ecosystem disruption when used as directed.
  • Cost-Effective Care: Offers an economical alternative to veterinary treatments, keeping your aquarium thriving without breaking the bank.

How It Works
Fish Penicillin 250 mg works by interfering with bacterial cell wall synthesis, causing the cell to weaken and burst under internal pressure. This action targets gram-positive bacteria and select gram-negative strains common in fish, such as those responsible for fin and tail rot or skin ulcerations. By halting bacterial growth, it helps fish recover quickly and prevents the spread of infection in the tank.

Dosage and Administration

  • Recommended Dose: Add one tablet (250 mg) per 10 gallons of aquarium water daily for 5 days.
  • Instructions: Dissolve the tablet in a small amount of tank water before adding it to the aquarium. Perform a 25-50% water change between doses to maintain water quality. Continue treatment for a minimum of 5 days, up to 10 days maximum—stop if no improvement is seen within 5 days.
  • Note: Adjust dosage based on tank size and monitor fish response. Consult an aquatic specialist for severe cases or sensitive species.

Safety Information

  • Side Effects: Rare when dosed correctly, though overuse may stress fish watch for signs like lethargy or erratic swimming.
  • Precautions: For ornamental fish only not for human use or fish intended for food. Avoid in tanks with invertebrates or sensitive plants unless tested. Keep out of reach of children and pets.
  • Storage: Store in a cool, dry place below 25°C (77°F), tightly sealed, away from moisture and light.

Why Choose Fish Penicillin 250 mg?
Fish Penicillin 250 mg is a go-to for aquarists seeking a straightforward, effective way to tackle bacterial infections. Its pharmaceutical-grade quality ensures dependable results, while its easy-dissolve formula simplifies treatment. Affordable and widely trusted, it’s a must-have for maintaining a healthy aquarium, letting your fish flourish without the hassle of complex care. Stock it in your aquatic toolkit and be ready for whatever bacterial challenges come your way.

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Active Ingredient

Penicillin

Manufacturer

FISH AID

Delivery Time

7 To 14 Days

SKU:

What is Fish Penicillin 250 mg used for?

It is used to treat bacterial infections in ornamental fish, such as fin rot, tail rot, and gill disease.


Can I use Fish Penicillin for human treatment?

No. Fish Penicillin is intended strictly for aquarium use and not approved for human consumption.


How do I dose Fish Penicillin in my aquarium?

Follow the manufacturer's instructions on the packaging, usually based on gallons of water in your tank. Do not overdose.


Is it safe for all fish types?

Generally safe for most ornamental fish, but sensitive species should be monitored closely during treatment.


Can it harm my aquarium plants or filters?

Fish Penicillin may impact beneficial bacteria in your filter system. It’s best to isolate sick fish if possible and monitor water quality.


Disclaimer: The content on this page is meant for informational purposes and is not, under any circumstances, supposed to be treated as a substitute for any medical advice, diagnosis, or treatment. For any questions that you may have regarding a medical condition, it is advised to consult your physician or seek help from a qualified health provider before self-medicating. In case you have any concerns regarding the content on our website, please write to us at info@usmedilife.com
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