Expiration Date: Fix Mox 500 – EXP: 8/2027 Fix Mox 250 – EXP: 5/2027 Fix Flex 500 – EXP: 6/2027 Fix Flex 250 – EXP: 4/2026 Fix Doxy 100 - 30 – EXP: 2/2026 Fix Doxy 100 - 60 – EXP: 6/2026 Fix Flox 500 – EXP: 4/2027 Fix Pen 500 – EXP: 6/2026 Fix Sulfa 960 – EXP: 12/2028 Fix Zithro 250 – EXP: 6/2027 Fix Zole 500 – EXP: 2/2027 Fix Zole 250 – EXP: 12/2026 Fix Cin 150 – EXP: 8/2026 Reef Flux 200mg – EXP: 2/2027 Expiration Date: Fix Mox 500 – EXP: 8/2027 Fix Mox 250 – EXP: 5/2027 Fix Flex 500 – EXP: 6/2027 Fix Flex 250 – EXP: 4/2026 Fix Doxy 100 - 30 – EXP: 2/2026 Fix Doxy 100 - 60 – EXP: 6/2026 Fix Flox 500 – EXP: 4/2027 Fix Pen 500 – EXP: 6/2026 Fix Sulfa 960 – EXP: 12/2028 Fix Zithro 250 – EXP: 6/2027 Fix Zole 500 – EXP: 2/2027 Fix Zole 250 – EXP: 12/2026 Fix Cin 150 – EXP: 8/2026 Reef Flux 200mg – EXP: 2/2027
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Fish Zithro (Azithromycin) 250mg 30 Tablets Fish Antibiotics

$95.99 $109.95

In Stock

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Wondering if your fish antibiotics are still safe and potent? Welcome to the official FishAntibiotics.us expiration date tracker—the most accurate and up-to-date source for ensuring you receive the freshest fish meds online.

Whether you're purchasing trusted Fish Mox (Amoxicillin), powerful Fish Zole (Metronidazole), or broad-spectrum solutions like Fish Flex (Cephalexin) or Fish Sulfa (Sulfamethoxazole/Trimethoprim), we keep you informed. Updated regularly, this guide helps you compare your product with the latest batch from FishAntibiotics.us.

We specialize in only the most reliable, pharmaceutical-grade aquarium antibiotics, including ciprofloxacin, azithromycin, clindamycin, and fluconazole. Buy with confidence, knowing your medication hasn’t passed its prime.


FishAntibiotics.us Product Expiration Dates

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Fish Zithro Azithromycin 250mg 30 Tablets

Fish Zithro (Azithromycin) Tablets are an extremely effective treatment against bacterial infections in aquarium fish. This broad-spectrum antibiotic treats conditions like fin rot, gill disease, and columnaris. The tablets dissolve quickly in freshwater and saltwater aquariums, helping restore your aquatic companion's health efficiently.

Fish Zithro Azithromycin Tablets offer fast and effective treatment for bacterial infections of aquarium fish. Their broad action, ease of application, and minimal disruption to beneficial bacteria make them a top choice for aquarists. Suitable for both fresh and saltwater environments, Fish Zithro ensures a thriving aquatic habitat.

What Are the Benefits of Fish Zithro Azithromycin Tablets for Fish?

  • Broad Spectrum of Activity: Effective against gram-positive and gram-negative bacteria including Mycobacterium, Aeromonas, and Vibrio species.
  • Active Against Internal and External Infections: Treats ulcers, skin lesions, fin rot, septicemia, and more.
  • Long-Lasting Action: Prolonged therapeutic levels reduce the need for frequent dosing, minimizing fish stress.
  • Easy to Administer: Can be dissolved in water or mixed with fish food for versatile treatment methods.
  • Low Impact on Beneficial Bacteria: Minimal disruption to the biological filtration system, helping maintain stable tank conditions.

How to Use Fish Zithro Tablets for Fish?

  • Dissolve one 250mg tablet per 10 gallons of water in a hospital tank.
  • Treat daily for 5–7 days or as recommended by a veterinarian.
  • Perform partial water changes as necessary to maintain water quality.
  • Pro Tip: Quarantine infected fish separately to protect healthy tank mates and preserve tank stability.

What Are the Ingredients in Fish Zithro Tablets?

Active Ingredient: Azithromycin 250mg
Inactive Ingredients: Pharmaceutical-grade excipients to ensure stability and effective dissolution.

Are There Any Side Effects of Fish Zithro?

  • Possible development of antibiotic resistance with overuse.
  • Minor stress if improperly dosed.

Important Warnings for Using Fish Zithro

  • For aquarium use only — not for human consumption.
  • Monitor water parameters during treatment.
  • Store tablets in a cool, dry place away from sunlight.
  • Keep away from children and pets.

Shipping & Returns

Shipping Policy: We offer various shipping options (Ground, Express, Priority, International) based on your needs. Read our shipping policy here.

Refund Policy: If you encounter any issues with your product, please review our refund policy for returns and exchanges.

FAQs - Fish Zithro Azithromycin 250mg 30 Tablets for Bacterial Infections in Fish

What is Fish Zithro Azithromycin Tablets used for?

Used to treat bacterial infections in aquarium fish such as fin rot, columnaris, gill disease, ulcers, and septicemia.

How do I determine if my fish needs antibiotics like Fish Zithro?

Symptoms include frayed fins, open sores, discoloration, or abnormal swimming behaviors. Confirm with a veterinarian or experienced aquarist.

Can Fish Zithro be used in a community tank?

Preferably treat fish in a hospital tank to avoid affecting healthy tank mates and beneficial bacteria.

What precautions should I take while using Fish Zithro?

Ensure proper dosing and closely monitor water quality. Always quarantine infected fish when possible.

Can Fix-Zithro treat fungal infections in fish?

No, it is designed for bacterial infections only. Use antifungal treatments like Reef Flux for fungal issues.

How does Azithromycin work in Fish Zithro?

Inhibits bacterial protein synthesis, stopping bacteria growth and helping the fish's immune system clear the infection.

Can Fish Zithro be harmful if overdosed?

Yes. Overdosing can harm beneficial bacteria and stress fish. Always follow recommended dosages.

What types of bacterial infections are common in fish?

Common infections include fin rot, columnaris (cotton wool disease), ulcers, gill disease, and septicemia.

How should I dispose of unused Fish Zithro tablets?

Follow local guidelines for pharmaceutical disposal. Do not flush down the drain or discard improperly.

Related Products

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  • Express delivered 2-4 Business Days

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Fish Zithro 250mg Tablets – Azithromycin for Ornamental FishFish Zithro Azithromycin 250mg – 30 Tablets for Aquarium UseFish Zithro Antibiotics – Treats Fin Rot, Ulcers, Gill Disease

Customer Reviews

Based on 14 reviews
86%
(12)
7%
(1)
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(0)
0%
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7%
(1)
K
KyRee Jones

Great product and timing

T
Tyler Robinson
Fraudulent seller

Ordered back to back same order . Order 12243 and 12244 . Contacted seller multiple times about 1 order being filled but not the other no response . Requested a refund for order 12244 I did not receive and seller copied and pasted tracking number for order 12243 or order 12244 order to avoid refund

K
Karen Wright
Great service

quick service and great communication

A
Anthony goltiani
On time and as advertised

This drug is produced in China by Changzhou Pharmaceutical Factory for Bio-Coastal Pharma International, LLC., NDC 42582-0216

V
Vicki Mcpherson
Exactly item I ordered.

Easy and clear product information.
Didn't have to search for product. It came up on first page. Fast delivery! Thank you!