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Fish Penicillin 250mg – Effective Aquarium Antibiotic 100 Tablets
Regular price $59.99
In Stock
- New regulations are coming, and our fish medications will be unavailable soon. Stock up now—limited supply!
Check The Latest Expiration Dates
Check The Latest Expiration Dates
Updated 05/21/2025
Looking for the freshest and most reliable fish antibiotics online? Whether you're stocking up on Fish Mox, Fish Flex, Fish Zole, or Fish Sulfa, knowing the expiration dates is essential for ensuring the effectiveness of your aquarium medication. We've created this regularly updated expiration list so you can shop confidently. Don't risk outdated meds—compare your current product with the latest fish antibiotics expiration dates from trusted sources like Thomas Labs Pets.
From broad-spectrum fish antibiotics like amoxicillin, ciprofloxacin, and doxycycline, to advanced treatments like fluconazole and metronidazole, we’ve got you covered. Make sure your fish meds are safe, current, and fully potent with the latest updates below.
Fish Antibiotics Expiration Dates
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Fish Mox - Amoxicillin 500 mg 100 Capsules – Expires: 08/2027
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Fish Mox - Amoxicillin 250 mg 100 Capsules – Expires: 05/2027
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Fish Zole - Metronidazole 250 mg 60 Tablets – Expires: 12/2026
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Fish Zole - Metronidazole 500 mg 60 Tablets – Expires: 02/2027
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Fish Flex - Cephalexin 250 mg 100 Capsules – Expires: 04/2026
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Fish Flex - Cephalexin 500 mg 100 Capsules – Expires: 06/2027
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Fish Doxy - Doxycycline 100 mg 30 Capsules – Expires: 02/2026
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Fish Doxy - Doxycycline 100 mg 60 Capsules – Expires: 06/2026
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Fish Pen - Penicillin 500 mg 30 Tablets – Expires: 06/2026
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Fish Pen - Penicillin 500 mg 60 Tablets – Expires: 06/2026
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Fish Flox - Ciprofloxacin 500 mg 30 Capsules – Expires: 04/2027
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Fish Flox - Ciprofloxacin 500 mg 60 Capsules – Expires: 04/2027
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Fish Sulfa - Sulfamethoxazole & Trimethoprim 960 mg 30 Tablets – Expires: 12/2028
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Fish Sulfa - Sulfamethoxazole & Trimethoprim 960 mg 60 Tablets – Expires: 12/2028
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Fish Zithro - Azithromycin 250 mg 30 Tablets – Expires: 06/2027
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Fish Cin - Clindamycin 150 mg 100 Capsules – Expires: 08/2026
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Reef Flux - Fluconazole 200 mg 10 Capsules – Expires: 02/2027
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FREE SHIPPING ON ALL ORDER OVER 49$
Guaranteed Fresh Stock with Latest Expiration Dates +2027
Guaranteed Fresh Stock with Latest Expiration Dates +2027
Fast, Same-Day Shipping Available Before 1 PM CST.
Fast, Same-Day Shipping Available Before 1 PM CST.
Fish Penicillin 250mg 100 Tablets
Thomas Labs Quality – Effective Aquarium Antibiotic
Fish Penicillin 250mg is a pharmaceutical-grade antibiotic formulated for ornamental fish. It helps control bacterial diseases such as fin rot, ulcers, and gill disease quickly and efficiently.
Highlights
- Professional-grade aquarium antibiotic
- Used for gram-positive bacterial infections
- Promotes fast healing and improved fish health
- Safe when used as directed for ornamental fish
How to Use
Dose one 250mg tablet per 40 gallons of water. Repeat every 24 hours for 5–10 days. Perform partial water changes between treatments for optimal results.
Storage Information
Store tightly closed in a dry, cool environment (59°–86°F). For aquarium use only.
Usually ships within 1 business day to USA & CANADA
Shipping Options:
FREE SHIPPING ON ALL ORDERS- USPS First Class Package : $6.95, 3-5 days (USPS First Class Package)
- FedEx 2Day®: $29.95, 1-Business Days (FedEx)
More Shipping Info:
- Orders placed Monday-Friday before 2pm Central Time usually ship the same day.
- We ship to the USA And Canada only.
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