Fish Zithro Azithromycin 250mg Fish Antibiotic – 12 & 30 Tablets

Fish Zithro Azithromycin 250mg is a powerful, broad-spectrum fish antibiotic formulated to fight serious bacterial infections in freshwater and saltwater aquarium fish. Each tablet contains 250mg of azithromycin, a long-acting macrolide antibiotic with activity against many susceptible gram-positive and gram-negative bacteria.

Fish Zithro is commonly selected for bacterial gill disease, columnaris, fin rot, tail rot, mouth rot, infected wounds, skin ulcers, popeye and other internal or external bacterial infections affecting ornamental fish.

Azithromycin enters susceptible bacterial cells and blocks their ability to manufacture essential proteins. Without those proteins, the bacteria cannot continue growing and multiplying, allowing the infection to be brought under control.

What Does Fish Zithro Treat?

Fish Zithro is designed for bacterial diseases caused by organisms susceptible to azithromycin. Its broad antibacterial activity makes it especially useful for infections involving the gills, skin, mouth, fins and internal tissues.

• Bacterial gill disease
• Columnaris and cotton-mouth disease
• Fin rot and tail rot
• Mouth rot and bacterial mouth infections
• Popeye associated with bacterial infection
• Open sores and bacterial skin ulcers
• Infected wounds, cuts and damaged fins
• Red lesions and inflamed skin
• Internal bacterial infections
• Systemic bacterial infections
• Secondary bacterial infections following injury or stress

Common Signs of a Bacterial Fish Infection

Bacterial infections can spread quickly, damage healthy tissue and become life-threatening when treatment is delayed. Fish Zithro may be appropriate when fish display symptoms consistent with a susceptible bacterial infection, including:

• Rapid breathing or gasping near the surface
• Pale, inflamed or deteriorating gills
• White or gray patches on the mouth, skin or gills
• Frayed, receding or discolored fins
• White or damaged tissue around the mouth
• Open sores, ulcers or red lesions
• Cloudy, swollen or protruding eyes
• Red streaks or inflammation beneath the skin
• Loss of appetite and reduced activity
• Isolation, weakness or bottom sitting
• Abnormal swimming or loss of balance

Powerful Azithromycin Antibiotic for Aquarium Fish

Azithromycin is an advanced macrolide antibiotic with broad activity against susceptible bacteria. It penetrates bacterial cells and attaches to the 50S ribosomal subunit, blocking the production of essential bacterial proteins.

Without these proteins, bacteria cannot grow, reproduce or continue spreading through the fish’s tissues. This mechanism gives Fish Zithro strong activity against bacterial infections involving the gills, mouth, skin, fins and internal organs.

Azithromycin also remains active in tissues for an extended period, making Fish Zithro a powerful option for persistent bacterial conditions caused by susceptible organisms.

Why Fish Zithro Is a Powerful Fish Antibiotic

• Contains 250mg of azithromycin per tablet
• Provides broad-spectrum antibacterial activity
• Targets susceptible gram-positive and gram-negative bacteria
• Powerful option for bacterial gill infections
• Treats columnaris and bacterial mouth disease
• Helps control fin rot and tail rot
• Useful for ulcers, sores and infected wounds
• Targets external and internal bacterial infections
• Suitable for ornamental freshwater and saltwater fish
• Available in convenient 12-tablet and 30-tablet packages

Available Fish Zithro Sizes

Fish Zithro 250mg – 12 Tablets

Fish Zithro 250mg with 12 tablets provides a compact supply of azithromycin for targeted aquarium treatment requirements. Every tablet contains a consistent 250mg strength.

Fish Zithro 250mg – 30 Tablets

Fish Zithro 250mg with 30 tablets provides a larger supply for additional treatment requirements, larger aquarium systems or fish keepers maintaining multiple freshwater or saltwater aquariums.

Fish Zithro for Bacterial Gill Disease

Bacterial gill disease attacks the delicate tissue responsible for extracting oxygen from the water. Affected fish may breathe rapidly, remain near the surface, rub against aquarium objects or develop pale, swollen and inflamed gills.

Fish Zithro targets susceptible bacteria responsible for gill infections and prevents them from continuing to grow and reproduce. Strong aeration and excellent water quality are essential when treating fish with damaged gills.

Fish Zithro for Columnaris

Columnaris is an aggressive bacterial disease that may affect the mouth, skin, fins and gills. It can produce white or gray patches, cotton-like mouth damage, saddle-shaped lesions, deteriorating fins and respiratory distress.

Fish Zithro provides broad antibacterial action against susceptible bacteria involved in columnaris. Early treatment is important because severe infections can spread rapidly and cause major tissue damage.

Fish Zithro for Fin Rot and Tail Rot

Fin rot and tail rot cause the fins to become frayed, discolored, inflamed and progressively shorter. Advanced infections may continue toward the fish’s body and permanently damage healthy tissue.

When the condition is caused by bacteria susceptible to azithromycin, Fish Zithro blocks bacterial growth and helps stop the infection responsible for the continuing destruction of the fins and tail.

Fish Zithro for Mouth Rot

Bacterial mouth infections can appear as white, gray, swollen or eroded tissue around the lips and oral cavity. Severe mouth rot may interfere with feeding and spread to surrounding tissue.

Fish Zithro targets susceptible bacteria involved in mouth rot and helps control the infection before extensive tissue deterioration occurs.

Fish Zithro for Popeye

Popeye causes one or both eyes to become swollen or protrude from the socket. The condition may result from injury, poor water quality or an internal bacterial infection.

When popeye is bacterial, Fish Zithro may help fight susceptible organisms responsible for inflammation and infection. Water quality should be corrected at the same time to support recovery.

Fish Zithro for Ulcers and Infected Wounds

Open wounds and ulcers allow harmful bacteria to invade the skin and deeper soft tissues. These injuries may result from aggression, handling, sharp aquarium decorations, parasites or poor environmental conditions.

Fish Zithro provides antibacterial activity against susceptible bacteria involved in infected wounds, red sores, ulcers, lesions and secondary skin infections.

Freshwater and Saltwater Fish Antibiotic

Fish Zithro may be incorporated into bacterial treatment programs for ornamental fish maintained in freshwater and saltwater aquariums. This includes tropical fish, bettas, goldfish, koi, cichlids and marine ornamental species.

Whenever practical, isolate infected fish in a dedicated hospital or quarantine aquarium. A separate treatment tank allows closer observation, controlled medication use and better protection for healthy fish in the primary aquarium.

Important Treatment Information

Confirm that the condition is bacterial before using Fish Zithro. Azithromycin treats susceptible bacterial infections; it does not eliminate parasites, viruses or true fungal diseases.

Follow the directions supplied with the product. Remove activated carbon, chemical filtration and UV sterilization when directed because these systems may reduce the available medication. Maintain strong aeration and monitor ammonia, nitrite, pH and the overall condition of the fish throughout treatment.

Complete the recommended antibiotic course even when visible symptoms begin improving. Ending treatment too early may allow surviving bacteria to multiply, cause the infection to return and contribute to antibiotic resistance.

Product Details

• Product name: Fish Zithro
• Active ingredient: Azithromycin
• Medication class: Macrolide antibiotic
• Product type: Broad-spectrum fish antibiotic
• Strength: 250mg per tablet
• Available quantities: 12 and 30 tablets
• Dosage form: Tablets
• Target: Susceptible bacterial infections
• Aquarium type: Freshwater and saltwater
• Intended use: Ornamental aquarium fish

Storage

Store Fish Zithro in its original, tightly closed container in a cool, dry location. Protect the tablets from moisture, excessive heat and direct sunlight. Keep out of reach of children and animals.

Frequently Asked Questions

Is Fish Zithro an antibiotic?

Yes. Fish Zithro contains azithromycin, a broad-spectrum macrolide antibiotic used to fight susceptible bacterial infections in ornamental aquarium fish.

What infections does Fish Zithro treat?

Fish Zithro is commonly used for bacterial gill disease, columnaris, fin rot, tail rot, mouth rot, ulcers, infected wounds, bacterial popeye and other infections caused by bacteria susceptible to azithromycin.

What is the active ingredient in Fish Zithro?

Each Fish Zithro tablet contains 250mg of azithromycin.

Can Fish Zithro treat bacterial gill disease?

Fish Zithro may treat gill disease caused by bacteria susceptible to azithromycin. Strong aeration and excellent water quality should be maintained throughout treatment.

Can Fish Zithro treat columnaris?

Fish Zithro may be used for columnaris caused by susceptible bacteria. Prompt treatment is important because severe columnaris can quickly damage the skin, mouth and gills.

Can Fish Zithro treat fin rot and tail rot?

Fish Zithro may treat fin and tail rot caused by susceptible bacteria. Poor water quality, injury and chronic stress should also be corrected.

Can Fish Zithro treat popeye?

Fish Zithro may help when popeye is associated with a susceptible bacterial infection. Popeye caused solely by injury, gas supersaturation or poor water quality requires correction of the underlying problem.

Can Fish Zithro be used for freshwater and saltwater fish?

Fish Zithro may be used in appropriate treatment programs for ornamental freshwater and saltwater fish according to the supplied directions.

Does Fish Zithro treat parasites or fungal infections?

No. Azithromycin is an antibacterial medication. It does not eliminate parasites, viruses or true fungal infections.

What sizes are available?

Fish Zithro is available in 250mg tablets with either 12 or 30 tablets per package.

For ornamental fish use only. Not for human use or for fish intended for human consumption.