Aquarium Penicillin 250mg & 500mg – 100 Fish Antibiotic Tablets

Aquarium Penicillin 250mg & 500mg – Powerful Fish Antibiotic

Aquarium Penicillin is a powerful penicillin-class antibiotic intended for ornamental aquarium fish. It is available in 250mg and higher-strength 500mg Forte options, with 100 tablets in every bottle.

Also commonly searched as Fish Penicillin, Fish Pen, Fish Pen Forte, Aqua Pen and Penicillin V Potassium for fish, this product provides antibacterial activity against susceptible organisms associated with external and systemic fish infections.

Available Strengths

• Aquarium Penicillin 250mg: 100 tablets
• Aquarium Penicillin 500mg Forte: 100 tablets

Both options contain Penicillin V Potassium as the active ingredient. Select the strength specified by the verified product directions or recommended by a licensed aquatic veterinarian.

Powerful Penicillin-Class Antibacterial Formula

Penicillin V works by disrupting the formation of susceptible bacterial cell walls. Without a functional protective wall, actively growing bacteria become structurally unstable. Penicillin is particularly relevant to susceptible gram-positive organisms and selected other bacteria.

Penicillin does not treat fungal infections, parasites, viruses or bacterial strains that are naturally resistant to its activity. Correct diagnosis and professional guidance are essential before treatment.

Bacterial Conditions Associated With Penicillin Use

An aquatic veterinarian may select Penicillin V for susceptible bacterial conditions associated with:

• Fin rot and progressive fin deterioration
• Tail rot and infected fin tissue
• Bacterial mouth infections and mouth lesions
• Ulcers, sores and bacterial skin lesions
• Open wounds with secondary bacterial infection
• Redness, swelling and localized inflammation
• Bacterial gill disease
• Popeye associated with bacterial infection
• Cloudy eyes caused by susceptible bacteria
• Internal or systemic infections caused by susceptible organisms

Product Specifications

• Product: Aquarium Penicillin
• Also searched as: Fish Pen, Fish Pen Forte and Aqua Pen
• Active ingredient: Penicillin V Potassium
• Available strengths: 250mg and 500mg per tablet
• Package size: 100 tablets per bottle
• Medication class: Penicillin beta-lactam antibiotic
• Product format: Tablets
• Intended for: Ornamental aquarium fish

Professional Aquarium Treatment Practices

Accurately identify the likely cause of disease before beginning treatment. Bacterial infections, fungal diseases, parasites and poor water quality can produce similar symptoms while requiring completely different treatment strategies.

Whenever possible, transfer affected fish to a clean, properly aerated hospital or quarantine tank. Isolation allows closer observation, accurate water-volume calculation and reduced antibiotic exposure for healthy aquarium inhabitants.

Test ammonia, nitrite, nitrate, pH, temperature and dissolved oxygen before and throughout treatment. Poor water conditions can damage the protective mucus layer, intensify bacterial disease and interfere with recovery.

Activated carbon, UV sterilization, ozone and certain chemical filtration systems may remove or reduce aquarium medications. Adjust filtration only when required by the verified product directions or recommended by an aquatic veterinarian. Monitor ammonia and nitrite because antibiotics may affect biological filtration.

Use Aquarium Penicillin exactly as directed on the original product label or by a licensed aquatic veterinarian. The correct strength, amount, administration method and treatment duration depend on the diagnosis, fish species, aquarium volume and water conditions.

Important Safety Information

• For ornamental aquarium fish only.
• Not for human consumption or human medical use.
• Not for use in fish intended for human consumption.
• Do not use in animals with a known penicillin or beta-lactam sensitivity unless professionally directed.
• Reserve antibiotic use for susceptible bacterial infections.
• Do not combine with other medications unless directed by a veterinarian.
• Keep out of reach of children and other animals.
• Store according to the instructions printed on the original label.
• Review all ingredients, warnings and directions before use.

Package contents: One bottle containing 100 Aquarium Penicillin tablets in the selected 250mg or 500mg strength.