{"product_id":"aquarium-penicillin-250mg-500mg-100-tablets","title":"Aquarium Penicillin 250mg \u0026 500mg – 100 Fish Antibiotic Tablets","description":"\u003ch2\u003eAquarium Penicillin 250mg \u0026amp; 500mg – Powerful Fish Antibiotic\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eAquarium Penicillin\u003c\/strong\u003e is a powerful penicillin-class antibiotic intended for ornamental aquarium fish. It is available in \u003cstrong\u003e250mg\u003c\/strong\u003e and higher-strength \u003cstrong\u003e500mg Forte\u003c\/strong\u003e options, with \u003cstrong\u003e100 tablets in every bottle\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eAlso commonly searched as \u003cstrong\u003eFish Penicillin, Fish Pen, Fish Pen Forte, Aqua Pen\u003c\/strong\u003e and \u003cstrong\u003ePenicillin V Potassium for fish\u003c\/strong\u003e, this product provides antibacterial activity against susceptible organisms associated with external and systemic fish infections.\u003c\/p\u003e\n\n\u003ch3\u003eAvailable Strengths\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAquarium Penicillin 250mg:\u003c\/strong\u003e 100 tablets\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAquarium Penicillin 500mg Forte:\u003c\/strong\u003e 100 tablets\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eBoth 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.\u003c\/p\u003e\n\n\u003ch3\u003ePowerful Penicillin-Class Antibacterial Formula\u003c\/h3\u003e\n\n\u003cp\u003ePenicillin 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.\u003c\/p\u003e\n\n\u003cp\u003ePenicillin 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.\u003c\/p\u003e\n\n\u003ch3\u003eBacterial Conditions Associated With Penicillin Use\u003c\/h3\u003e\n\n\u003cp\u003eAn aquatic veterinarian may select Penicillin V for susceptible bacterial conditions associated with:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFin rot and progressive fin deterioration\u003c\/li\u003e\n  \u003cli\u003eTail rot and infected fin tissue\u003c\/li\u003e\n  \u003cli\u003eBacterial mouth infections and mouth lesions\u003c\/li\u003e\n  \u003cli\u003eUlcers, sores and bacterial skin lesions\u003c\/li\u003e\n  \u003cli\u003eOpen wounds with secondary bacterial infection\u003c\/li\u003e\n  \u003cli\u003eRedness, swelling and localized inflammation\u003c\/li\u003e\n  \u003cli\u003eBacterial gill disease\u003c\/li\u003e\n  \u003cli\u003ePopeye associated with bacterial infection\u003c\/li\u003e\n  \u003cli\u003eCloudy eyes caused by susceptible bacteria\u003c\/li\u003e\n  \u003cli\u003eInternal or systemic infections caused by susceptible organisms\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Aquarium Penicillin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlso searched as:\u003c\/strong\u003e Fish Pen, Fish Pen Forte and Aqua Pen\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActive ingredient:\u003c\/strong\u003e Penicillin V Potassium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable strengths:\u003c\/strong\u003e 250mg and 500mg per tablet\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage size:\u003c\/strong\u003e 100 tablets per bottle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedication class:\u003c\/strong\u003e Penicillin beta-lactam antibiotic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct format:\u003c\/strong\u003e Tablets\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntended for:\u003c\/strong\u003e Ornamental aquarium fish\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProfessional Aquarium Treatment Practices\u003c\/h3\u003e\n\n\u003cp\u003eAccurately 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.\u003c\/p\u003e\n\n\u003cp\u003eWhenever 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.\u003c\/p\u003e\n\n\u003cp\u003eTest 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.\u003c\/p\u003e\n\n\u003cp\u003eActivated 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.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eUse Aquarium Penicillin exactly as directed on the original product label or by a licensed aquatic veterinarian.\u003c\/strong\u003e The correct strength, amount, administration method and treatment duration depend on the diagnosis, fish species, aquarium volume and water conditions.\u003c\/p\u003e\n\n\u003ch3\u003eImportant Safety Information\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFor ornamental aquarium fish only.\u003c\/li\u003e\n  \u003cli\u003eNot for human consumption or human medical use.\u003c\/li\u003e\n  \u003cli\u003eNot for use in fish intended for human consumption.\u003c\/li\u003e\n  \u003cli\u003eDo not use in animals with a known penicillin or beta-lactam sensitivity unless professionally directed.\u003c\/li\u003e\n  \u003cli\u003eReserve antibiotic use for susceptible bacterial infections.\u003c\/li\u003e\n  \u003cli\u003eDo not combine with other medications unless directed by a veterinarian.\u003c\/li\u003e\n  \u003cli\u003eKeep out of reach of children and other animals.\u003c\/li\u003e\n  \u003cli\u003eStore according to the instructions printed on the original label.\u003c\/li\u003e\n  \u003cli\u003eReview all ingredients, warnings and directions before use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003ePackage contents:\u003c\/strong\u003e One bottle containing 100 Aquarium Penicillin tablets in the selected 250mg or 500mg strength.\u003c\/p\u003e","brand":"FIXMOX","offers":[{"title":"250-mg (100 Tablets)","offer_id":57343481741577,"sku":null,"price":59.99,"currency_code":"USD","in_stock":true},{"title":"500-mg (100 Tablets)","offer_id":57343481774345,"sku":null,"price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0883\/0874\/4457\/files\/Pen250100.png?v=1789744709","url":"https:\/\/fixmox.com\/products\/aquarium-penicillin-250mg-500mg-100-tablets","provider":"MOX","version":"1.0","type":"link"}