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Inhalational Anthrax (Post-Exposure)

Ciprofloxacin is indicated in pediatric patients for inhalational anthrax (post-exposure). The risk-benefit assessment indicates that administration of ciprofloxacin to pediatric patients is appropriate. For information regarding pediatric dosing in inhalational anthrax (post-exposure), see DOSAGE AND ADMINISTRATION and INHALATIONAL ANTHRAX

 ADDITIONAL INFORMATION.

Complicated Urinary Tract Infection and Pyelonephritis Ciprofloxacin is indicated for the treatment of complicated urinary tract infections and pyelonephritis due to Escherichia coli. Although effective in clinical trials, ciprofloxacin is not a drug of first choice in the pediatric population due to an increased incidence of adverse events compared to the controls, including events related to joints and/or surrounding tissues. The rates of these events in pediatric patients with complicated urinary tract infection and pyelonephritis within six weeks of follow-up were 9.3% (31/335) versus 6.0% (21/349) for control agents. The rates of these events occurring at any time up to the one year follow-up were 13.7% (46/335) and 9.5% (33/349), respectively. The rate of all adverse events regardless of drug relationship at six weeks was 41% (138/335) in the ciprofloxacin arm compared to 31% (109/349) in the control arm. (See ADVERSE REACTIONS and CLINICAL STUDIES.)

Cystic Fibrosis
Short-term safety data from a single trial in pediatric cystic fibrosis patients are available. In a randomized, double-blind clinical trial for the treatment of acute pulmonary exacerbations in cystic fibrosis patients (ages 5-17 years), 67 patients received ciprofloxacin I.V. 10 mg/kg/dose q8h for one week followed by ciprofloxacin tablets 20 mg/kg/dose q12h to complete 10-21 days treatment and 62 patients received the combination of ceftazidime I.V. 50 mg/kg/dose q8h
and tobramycin I.V. 3 mg/kg/dose q8h for a total of 10-21 days. Patients less than 5 years of age were not studied. Safety monitoring in the study included periodic range of motion examinations and gait assessments by treatment-blinded examiners. Patients were followed for an average of 23 days after completing treatment (range 0-93 days). This study was not designed to determine long term effects and the safety of repeated exposure to ciprofloxacin. Musculoskeletal adverse events in patients with cystic fibrosis were reported in 22% of the patients in the ciprofloxacin group and 21% in the comparison group. Decreased range of motion was reported in 12% of the subjects in the ciprofloxacin group and 16% in thecomparison group. Arthralgia was reported in 10% of the patients in the ciprofloxacin group and 11% in the comparison group. Other adverse events were similar in nature and frequency between treatment arms. One of sixty-seven patients developed arthritis of the knee nine days after a ten day course of treatment with ciprofloxacin. Clinical symptoms resolved, but an MRI showed knee effusion without other abnormalities eight months after treatment. However, the relationship of this event to the patient’s course of ciprofloxacin can not be definitively determined, particularly since patients with cystic fibrosis may develop arthralgias/arthritis as part of their underlying disease process.
Geriatric Use: In a retrospective analysis of 23 multiple-dose controlled clinical trials of ciprofloxacin encompassing over 3500 ciprofloxacin treated patients, 25% of patients were greater than or equal to 65 years of age and 10% were greater than or equal to 75 years of age. No overall differences in safety or effectiveness were observed between these subjects and younger subjects, and other reported clinical experience has not identified differences in responses between the elderly and younger patients, but greater sensitivity of some older individuals on any drug therapy cannot be ruled out. Ciprofloxacin is known to be substantially excreted by the kidney, and the risk of adverse reactions may be greater in patients with impaired renal function. No alteration of dosage is necessary for patients greater than 65 years of age with normal renal function. However, since some older individuals experience reduced renal function by virtue of their advanced age, care should be taken in dose selection for elderly patients, and renal function monitoring may be useful in these patients.(See CLINICAL PHARMACOLOGY and DOSAGE AND ADMINISTRATION.)

ADVERSE REACTIONS

Adverse Reactions in Adult Patients: During clinical investigations with oral and parenteral ciprofloxacin, 49,038 patients received courses of the drug. Most of the adverse events reported were described as only mild or moderate in severity, abated soon after the drug was discontinued, andorally treated patients.
The most frequently reported drug related events, from clinical trials of all formulations, all dosages, all drug-therapy durations, and for all indications of ciprofloxacin therapy were nausea (2.5%), diarrhea (1.6%), liver function tests abnormal (1.3%), vomiting (1.0%), and rash (1.0%). Additional medically important events that occurred in less than 1% of ciprofloxacin patients are listed below.
BODY AS A WHOLE: headache, abdominal pain/discomfort, foot pain, pain, pain inextremities, injection site reaction (ciprofloxacin intravenous)CARDIOVASCULAR: palpitation, atrial flutter, ventricular ectopy, syncope, hypertension, angina pectoris, myocardial infarction, cardiopulmonary arrest, cerebral thrombosis, phlebitis, tachycardia, migraine, hypotension CENTRAL NERVOUS SYSTEM: restlessness, dizziness, lightheadedness, insomnia, nightmares, hallucinations, manic reaction, irritability, tremor, ataxia, convulsive seizures, lethargy, drowsiness, weakness, malaise, anorexia, phobia, depersonalization, depression, paresthesia, abnormal gait, grand mal convulsion
GASTROINTESTINAL: painful oral mucosa, oral candidiasis, dysphagia, intestinal perforation, gastrointestinal bleeding, cholestatic jaundice, hepatitis HEMIC/LYMPHATIC: lymphadenopathy, petechia METABOLIC/NUTRITIONAL: amylase increase, lipase increase MUSCULOSKELETAL: arthralgia or back pain, joint stiffness, achiness, neck or chest pain, flare up of gout RENAL/UROGENITAL: interstitial nephritis, nephritis, renal failure, polyuria, urinary retention, urethral bleeding, vaginitis, acidosis, breast pain RESPIRATORY: dyspnea, epistaxis, laryngeal or pulmonary edema, hiccough, hemoptysis, bronchospasm, pulmonary embolism SKIN/HYPERSENSITIVITY: allergic reaction, pruritus, urticaria, photosensitivity, flushing, fever, chills, angioedema, edema of the face, neck, lips, conjunctivae or hands, cutaneous candidiasis, hyperpigmentation, erythema nodosum, sweating SPECIAL SENSES: blurred vision, disturbed vision (change in color perception, overbrightness of lights), decreased visual acuity, diplopia, eye pain, tinnitus, hearing loss, bad taste, chromatopsia required no treatment. Ciprofloxacin was discontinued because of an adverse event in 1.0% of In several instances nausea, vomiting, tremor, irritability, or palpitation were judged by investigators to be related to elevated serum levels of theophylline possibly as a result of drug interaction with ciprofloxacin.
In randomized, double-blind controlled clinical trials comparing ciprofloxacin tablets (500 mg BID) to cefuroxime axetil (250 mg - 500 mg BID) and to clarithromycin (500 mg BID) in patients with respiratory tract infections, ciprofloxacin demonstrated a CNS adverse event profile comparable to thecontrol drugs. What if I have been prescribed CIPRO for possible anthrax exposure? CIPRO has been approved to reduce the chance of developing anthrax infection following exposure to the anthrax bacteria. In general, CIPRO is not recommended for children; however, it is approved for use in patients younger than 18 years old for anthrax exposure. If you are pregnant, or plan to become pregnant while taking CIPRO, you and your doctor should discuss if the benefits of taking CIPRO for anthrax outweigh the risks.
CIPRO is generally well tolerated. Side effects that may occur during treatment to prevent anthrax might be acceptable due to the seriousness of the disease. You and your doctor should discuss the risks of not taking your medicine against the risks of experiencing side effects. CIPRO can cause dizziness, confusion, or other similar side effects in some people. Therefore, it is important to know how CIPRO affects you before driving a car or performing other activities that require you to be alert and coordinated such as operating machinery. Your doctor has prescribed CIPRO only for you. Do not give it to other people. Do not use it for a condition for which it was not prescribed. You should take your CIPRO for as long as your doctor prescribes it; stopping CIPRO too early may result in failure to prevent anthrax.

Reactions to Cipro, Levaquin, and Other Fluoroquinolone Antibiotics Since the December, 2001, publication of my article in the Annals of Pharmacotherapy,1 I’ve received hundreds of e-mails from people suffering from devastating, long-lasting side effects associated with Cipro, Levaquin, Floxin, and other fluoroquinolone antibiotics. Most of these people are young and had been healthy and active.These antibiotics have legitimate uses in treating infectious diseases, but they are overused for minor conditions such as sinusitis, prostatitis, and bladder infections. My stance is that Cipro, Levaquin, and similar antibiotics should be used only when other, safer drugs are ineffective, or for organisms that are only sensitive to fluoroquinolones.As I said on National Public Radio in October 2001, I strongly believe that all people placed on these antibiotics should be warned about infrequent yet serious reactions that may cause joint, muscle, or tendon pain or rupture, nerve pain (burning, electrical sensations, tingling), muscle weakness, thinking or memory problems, heart palpitations, rapid heart rate, gastric problems, skin rash, or many other unusual physical or psychological symptoms. These reactions can occur quickly and suddenly, and patients should alert their doctors immediately.Doctors, for their part, must recognize that these symptoms can lead to severe, long-term pain or dysfunction, and should stop the antibiotics immediately if at all possible. Because adverse reactions may increase in severity and duration with each exposure, patients with these reactions should not receive fluoroquinolones again. I’d hoped that my article would accomplish this, just as it prompted the U.S. Centers for Disease Control to alter their guidelines for treating anthrax. But it hasn’t had the same impact on the medical system.

“These adverse reactions can occur quickly and severely.
Doctors must be better informed.”

Most people do fine with these antibiotics. For those who don’t, the effects can often be minimized with proper warning and prompt response. Unfortunately, few patients were given any warnings. Again, their rights of informed consent are violated.On the hopeful side, I have spoken to the FDA about this issue. They are taking a very serious look at the problem. But although the FDA has already received thousands of reports, action is slow. And even if the FDA requires new warnings in package inserts and the PDR, most doctors will never notice them, and because of the unrelenting influence of the drug industry, most doctors will continue to overprescribe these drugs when other, safer, cheaper drugs would do. So you’d better be informed. Preventing fluoroquinolone reactions is much, much better than trying to treat them, because there is no known, specific treatment. Below is the information that I have sent to people seeking help. I don’t know if any of these suggestions is highly effective, but having experienced a severe, long-term disability myself in the mid-1990s and now having improved considerably, I encourage people to keep asking questions and trying things. You can also connect with others enduring similar experiences with fluoroquinolones at the following websites: ***

INFORMATION FOR PEOPLE WITH FLUOROQUINOLONE-RELATED REACTIONS

I have sent this information to hundreds of people who have contacted me about their reactions following the publication of my paper. I wrote the paper so that people having these types of problems might get accurately diagnosed, because most physicians have no idea how severe some of these fluoroquinolone-related reactions can be.First, I should explain I am not an expert on Cipro, Levaquin, or other fluoroquinolone antibiotics. I am a researcher (I do not see patients,order cipro), and my major area of expertise is medication reactions, which you can read about in my medical journal articles and my recent book, Over Dose: The Case Against The Drug Companies (Tarcher/Putnam, info & reviews at order cipro). I wrote the article about fluoroquinolones because of the reports I received and because no one was paying attention to this serious problem. My knowledge about fluoroquinolones in particular and antibiotics in general is limited to what is contained in the article. I have not conducted any new research on luoroquinolones since writing my article in the Annals of Pharmacotherapy in December, 2001, so you need to check the medical literature and others sources for updated information.Regrettably, there are few doctors who are informed about fluoroquinolone-related reactions. You might find information about knowledgeable doctors at some of the fluoroquinolone websites, where people have posted a lot of useful information.As far as I know, there are no specific treatments for the nerve or tendon/joint/muscle problems associated with Cipro, Floxin, and Levaquin, and other fluoroquinolones. Most of my information is hypothetical or anecdotal; some of these recommendations may help some people, but not others.Medications such as amitriptyline or other tricyclics, or Neurontin (gabapentin), may be helpful for neuropathic pain (tingling, burning or electrical sensations) or nerve pain. Muscle spasms, twitching, tremors, and seizures may be helped with long-acting benzodiazepines such as clonazepam (Klonopin) or diazepam (Valium,order cipro). SSRI antidepressants (order cipro,Zoloft, Paxil, Effexor, Prozac, etc.) are occasionally helpful for depression. Because patients’ nervous system are sometimes very sensitive, these drugs should be started at very low doses and increased, if necessary, very gradually.Magnesium (chelated,order cipro) in doses of 400-1000 mg/day may be useful for reducing neuropathic pain or muscle spasms in some people. Doses over the U.S. recommended daily amount of 320 for women and 400 for men should always be taken with a doctor’s supervision. Seniors, people with kidney disorders, and those taking medications for heart, hypertension, or other vascular or neurological disorders should have medical supervision even for RDA doses of magnesium. Interestingly, another doctor has also been recommending magnesium, as low doses of milk of magnesia (1 or 2 teaspoons twice-daily,order cipro), to be taken for several months. The theory is that because of the affinity of minerals for these antibiotics, this might help leech some of the remaining fluoroquinolone molecules from the tissues. Some patients have benefited, but not all. In discussion with this doctor, our sense is that calcium, magnesium, and perhaps other minerals may be beneficial. With magnesium, better absorption is important to get the magnesium into the tissues, so chelated magnesium or a magnesium solution might work best. As with all of these recommendations, there’s little solid science, so it’s trial and error. (For more information on magnesium, please go to the other magnesium sections of this website.)B-vitamins have been reported to reduce tingling. One person wrote to me that high doses of lecithin have helped with memory problems. GABA, an amino acid, has some similar qualities to Valium and Klonopin and may be helpful for anxiety, nervousness, or insomnia.Anti-inflammatory drugs are controversial: some people have written to me that they have helped, especially for muscle/joint/tendon pain; others have written that they have worsened their conditions. If you have benefited from anti-inflammatory drugs, you might obtain additional benefit from high doses of omega-3 oils (fish oils; EPA/DHA). There is considerable literature on this. Omega-3 oils take time to work, but the ultimate result can be better than standard anti-inflammatory drugs (NSAIDs,order cipro).

Many alternative doctors are knowledgeable about magnesium, GABA, omega-3 oils and, perhaps, about other possibilities.Corticosteroids (cortisone, order cipro,etc.) are very controversial. Doctors sometimes prescribe steroids in the hope of reducing the reactions, but many people have written that steroids actually made their cases worse. Steroids should be used with great caution unless there is a specific indication.
Fluoroquinolone-linked reactions can be nasty, and recovery varies from individual to individual, with some reactions resolving quickly and others lasting years. That’s why I do not advocate using fluoroquinolones as the first antibiotics for treating minor infections. If we are ever to change the medical-pharmaceutical mindset about this, it will be accomplished by patients. .I regret that I cannot give you a more specific, well-proven remedy for these reactions. It is tragic — and very frustrating — that the medical-pharmaceutical system frequently fails to recognize these problems and, therefore, doesn’t warn patients or doctors. So doctors not only fail to recognize the reactions, but continue to prescribe fluoroquinolones to people who’ve already shown signs of toxicity previously. It’s a terrible situation, but not unlike I’ve seen and written about with other drugs.
I hope that your condition resolves soon. Sincerely, Jay S. Cohen, M.D.