Cipro (Ciprofloxacin)

Cipro (ciprofloxacin) is an antibiotic in a class of medications called fluoroquinolones. It is used to treat a range of bacterial infections by stopping bacteria from growing.

What Is Cipro?

Cipro is commonly prescribed for infections such as urinary tract infections (UTIs), respiratory tract infections (such as bronchitis or pneumonia), skin infections, bone and joint infections, gastrointestinal infections (such as infectious diarrhea), and certain sexually transmitted infections.

Cipro works by blocking bacterial DNA gyrase and topoisomerase IV, enzymes that bacteria need for DNA replication, transcription, repair, and recombination. This causes the bacteria to die.

It is important to take Cipro exactly as prescribed by a healthcare provider and to finish the full course of treatment, even if your symptoms improve before the medication is finished. Misuse or overuse of antibiotics can lead to antibiotic resistance, which can make infections harder to treat in the future.

Clinical Pharmacology

Ciprofloxacin is well absorbed from the gastrointestinal tract after oral use, with a bioavailability of about 70-80%. Peak plasma concentrations are usually reached 1-2 hours after an oral dose.

This medication has a large volume of distribution, which means it spreads widely into tissues and body fluids. It penetrates well into tissues such as the lungs, kidneys, liver, gallbladder, and reproductive organs. It also crosses the blood-brain barrier and the placenta, and it passes into breast milk. It is metabolized in the liver into several metabolites, which have less antibacterial activity than the parent drug.

The main route of elimination is through the kidneys, with about 40-50% of an oral dose excreted unchanged in the urine. The elimination half-life of ciprofloxacin is about 4-6 hours in patients with normal kidney function. It is also excreted in bile and feces.

Ciprofloxacin has broad activity against both Gram-negative and Gram-positive bacteria. It is especially active against Gram-negative pathogens such as Escherichia coli, Pseudomonas aeruginosa, Neisseria gonorrhoeae, and Haemophilus influenzae. It has limited activity against anaerobic bacteria.

Ciprofloxacin shows concentration-dependent killing, which means its bacteria-killing effect increases at higher drug concentrations. The minimum inhibitory concentration (MIC) for ciprofloxacin varies depending on the bacterial species.

Cipro Forms and Ingredients

Cipro (ciprofloxacin) comes in several forms, including tablets, extended-release tablets, oral suspension, and intravenous solutions. The ingredients vary slightly depending on the formulation. Below are the typical ingredients in each form of Cipro.

Cipro Tablets

The active ingredient is ciprofloxacin hydrochloride.

Inactive ingredients are microcrystalline cellulose, corn starch, silicon dioxide, crospovidone, magnesium stearate, hypromellose, titanium dioxide, polyethylene glycol, and water.

Cipro XR (Extended-Release) Tablets

The active ingredient is ciprofloxacin hydrochloride.

Inactive ingredients are microcrystalline cellulose, sodium alginate, sodium bicarbonate, magnesium stearate, colloidal silicon dioxide, hypromellose, titanium dioxide, polyethylene glycol, and propylene glycol.

Cipro Oral Suspension

The active ingredient is ciprofloxacin hydrochloride.

Inactive ingredients are microcrystalline cellulose, carboxymethylcellulose sodium, citric acid, hydroxypropyl methylcellulose, polysorbate 20, simethicone emulsion, sodium benzoate, sorbic acid, sucrose, water, and artificial bubble gum flavouring.

Cipro Intravenous Solution

The active ingredient is ciprofloxacin lactate.

Inactive ingredients are lactic acid, sodium chloride, and water for injection.

The active ingredient (ciprofloxacin hydrochloride or ciprofloxacin lactate) provides the therapeutic effect, while the inactive ingredients act as fillers, binders, stabilizers, preservatives, and flavouring agents.

What Are the Dosages of Cipro?

The dosage of Cipro (ciprofloxacin) varies depending on the type and severity of the infection, the patient's age, kidney function, and other individual factors. Here is the dosage information for Cipro presented in a table:

Finish the full course of treatment even if your symptoms improve. Avoid too much sunlight or UV exposure. Tell your healthcare provider if you notice tendon pain, swelling, or inflammation. Watch for signs of serious side effects, including allergic reactions, central nervous system effects, and Clostridium difficile-associated diarrhea.

Consult a healthcare provider for specific dosage recommendations based on your individual health needs and condition.

Important Safety Information

Cipro (ciprofloxacin) is an effective antibiotic used to treat various bacterial infections, but it comes with important safety considerations.

• Ciprofloxacin is associated with an increased risk of tendinitis and tendon rupture, which can happen during or after treatment. The risk is higher in patients over 60 years of age, those taking corticosteroids, and those with kidney, heart, or lung transplants.
• It can cause permanent peripheral neuropathy (nerve damage). Symptoms include pain, burning, tingling, numbness, or weakness. Stop taking it right away if these symptoms occur.
• It can cause central nervous system (CNS) effects, including seizures, increased intracranial pressure, tremors, restlessness, anxiety, confusion, hallucinations, and depression. Use with caution in patients with a history of seizures or other CNS disorders.
• It may worsen muscle weakness in people with myasthenia gravis. Avoid use in these patients.
• Serious and sometimes fatal allergic reactions can happen after the first dose. Stop taking it right away if a rash, hives, or other signs of an allergic reaction occur.
• It can cause moderate to severe sunburn-like reactions. Avoid too much sunlight and UV exposure, and use sunscreen and protective clothing.
• It can prolong the QT interval on an ECG, which may increase the risk of serious heart rhythm problems (for example, torsades de pointes). Use with caution in patients with risk factors such as certain heart conditions or taking other drugs that prolong the QT interval.
• Clostridium difficile-associated diarrhea can occur during or after treatment. Symptoms include severe diarrhea, abdominal pain, and fever. Stop treatment if significant diarrhea occurs and manage it appropriately.
• Cases of severe liver injury have been reported. Stop taking it if symptoms of liver disease occur, such as jaundice, dark urine, or severe fatigue.
• It can affect blood sugar levels, including hyperglycemia and hypoglycemia. People with diabetes should monitor their blood glucose levels closely.
• It can cause muscle weakness in people with or without myasthenia gravis. Monitor for signs of muscle weakness.
• It is contraindicated in patients with a history of hypersensitivity to ciprofloxacin, other quinolones, or any component of the formulation.

Special Precautions

Pregnancy: Use only if the potential benefit justifies the potential risk to the fetus.

Breastfeeding: Ciprofloxacin passes into human milk. Consider stopping breastfeeding or stopping the drug, depending on how important the drug is to the mother.

Pediatric Use: Safety and effectiveness in patients under 18 years old are limited to certain infections (for example, complicated urinary tract infections and post-exposure inhalational anthrax).

Prescription

You need a prescription to buy Cipro (ciprofloxacin). In Canada, ciprofloxacin is prescription-only because it can cause serious side effects, requires proper diagnosis and medical supervision, and should be used appropriately to help limit antibiotic resistance.

If you think you may need Cipro, speak with a healthcare provider who can assess your symptoms and decide whether this antibiotic is appropriate for your condition. If needed, the healthcare provider can then provide a prescription in Canada.

Contraindications to Cipro

Ciprofloxacin (Cipro) has several contraindications where its use is not recommended.

Patients with a history of hypersensitivity or allergic reactions to ciprofloxacin, other fluoroquinolones, or any components of the formulation.

Co-administration with tizanidine (Zanaflex) is contraindicated because of the risk of significant hypotension and sedation.

Patients with myasthenia gravis should avoid ciprofloxacin because of the risk of worsening muscle weakness.

Patients with a history of tendon disorders related to quinolone use should avoid ciprofloxacin.

Use with caution in patients with known or suspected CNS disorders (for example, epilepsy or severe cerebral arteriosclerosis) because of the risk of seizures and other CNS effects.

Use with caution in patients with known QT prolongation, uncorrected electrolyte disorders (for example, hypokalemia or hypomagnesemia), or those taking other medications that prolong the QT interval.

Side Effects

Ciprofloxacin (Cipro) can cause a range of side effects, some of which can be serious.

Common Side Effects

1. Gastrointestinal issues: nausea, diarrhea, vomiting, abdominal pain.
2. Central nervous system effects: dizziness, headache, drowsiness.
3. Skin reactions: rash, itching.

Serious Side Effects

1. Increased risk of tendinitis and tendon rupture, especially in the Achilles tendon. This can happen during treatment or even months after treatment has stopped.
2. Peripheral neuropathy: severe nerve pain, tingling, numbness, or weakness, which can be permanent.
3. Central nervous system effects: seizures, tremors, restlessness, confusion, hallucinations, depression, anxiety.
4. Serious skin reactions: Stevens-Johnson syndrome, toxic epidermal necrolysis.
5. Hypersensitivity reactions: severe allergic reactions, including anaphylaxis, which can be life-threatening. Symptoms include rash, itching, swelling, severe dizziness, and difficulty breathing.
6. Severe, persistent diarrhea that can lead to serious colon conditions.
7. Severe liver damage, which may appear as jaundice, dark urine, severe fatigue, and abdominal pain.
8. QT interval prolongation, which can lead to serious heart rhythm disturbances (for example, torsades de pointes).
9. Musculoskeletal issues: joint pain, muscle pain.
10. Psychiatric effects: psychosis, suicidal thoughts or actions.

Always report any new or worsening symptoms to a healthcare provider promptly.

Interactions of Cipro With Other Medicines

Ciprofloxacin (Cipro) can interact with various other medications, which may change how it works or increase the risk of serious side effects.

1. Tizanidine (Zanaflex): Co-administration is contraindicated because of the risk of significant hypotension and sedation.
2. Theophylline: Ciprofloxacin can increase the plasma concentration of theophylline, which may lead to theophylline toxicity (for example, seizures or arrhythmias). Monitor theophylline levels closely.
3. Warfarin (Coumadin): Ciprofloxacin may increase the anticoagulant effects of warfarin, raising the risk of bleeding. Monitor INR/PT levels frequently.
4. Antacids, sucralfate, and mineral supplements: These can interfere with the absorption of ciprofloxacin. Take ciprofloxacin at least 2 hours before or 6 hours after these products.
5. Antiarrhythmics and other QT-prolonging drugs: Ciprofloxacin can prolong the QT interval, increasing the risk of serious heart rhythm disturbances. Use with caution in patients taking other QT-prolonging drugs (for example, amiodarone or sotalol).
6. Nonsteroidal anti-inflammatory drugs (NSAIDs): Using these together may increase the risk of CNS stimulation and seizures.
7. Cyclosporine: Co-administration can lead to increased serum levels of cyclosporine and a higher risk of nephrotoxicity. Monitor kidney function closely.
8. Phenytoin (Dilantin): Ciprofloxacin can alter phenytoin levels, leading to either an increase or decrease in its effect. Monitor phenytoin levels closely.
9. Methotrexate: Ciprofloxacin can inhibit the renal tubular transport of methotrexate, potentially increasing the risk of methotrexate toxicity.
10. Glyburide: Co-administration can increase the risk of hypoglycemia. Monitor blood glucose levels closely.

Ciprofloxacin can cause both hyperglycemia and hypoglycemia, so people with diabetes should monitor their blood glucose levels closely. Concurrent use can also increase the risk of tendinitis and tendon rupture. Ciprofloxacin can raise caffeine levels and prolong its effects, which may increase the risk of CNS stimulation (for example, nervousness or insomnia).

Overdose of Cipro

An overdose of Cipro (ciprofloxacin) can be serious and requires immediate medical attention.

Management of ciprofloxacin overdose involves supportive care and symptom-based treatment. Seek emergency medical help or contact a poison control centre right away. In the case of a recent overdose, gastric lavage (stomach pumping) may be considered to remove unabsorbed drug from the stomach. Activated charcoal may be given to reduce drug absorption if the overdose is identified within an hour of ingestion. Ensure adequate hydration to help prevent crystalluria and protect kidney function. Give appropriate treatment for nausea, vomiting, seizures, and other symptoms. Monitor heart function and treat any cardiac arrhythmias. Monitor kidney function and manage any signs of renal impairment.

To help prevent an overdose, take ciprofloxacin exactly as prescribed by your healthcare provider. Do not take more than the recommended dose. Do not self-medicate or change the dosage without speaking with a healthcare professional.

Storage

Proper storage of Cipro (ciprofloxacin) is essential to help maintain its effectiveness and safety.

Store at room temperature, between 20°C and 25°C (68°F and 77°F). Brief storage at temperatures between 15°C and 30°C (59°F and 86°F) is acceptable.

Keep the medication in its original container to protect it from light. Store in a dry place, away from moisture and humidity.

Keep out of reach of children and pets to prevent accidental ingestion.

Benefits of Using Cipro