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ciprofloxacin hydrochloride

Cetraxal, Ciloxan, Cipro, Cipro I.V., Ciproxin (UK)

Pharmacologic class: Fluoroquinolone

Therapeutic class: Anti-infective

Pregnancy risk category C

FDA Box Warning

• Fluoroquinolones for systemic use are associated with an increased risk of tendinitis and tendon rupture in all ages. This risk is further increased in patients usually over age 60, with concomitant use of corticosteroids, and in kidney, heart, and lung transplant recipients.


Inhibits bacterial DNA synthesis by inhibiting DNA gyrase in susceptible gram-negative and gram-positive organisms


Injection: 200 mg/20 ml, 400 mg/40 ml, 200 mg/100 ml premixed in dextrose 5% in water (D5W), 400 mg/200 ml premixed in D5W, 1,200 mg/120-ml bulk package

Ophthalmic ointment: 3.5-g tube

Ophthalmic solution: 2.5-ml and 5-ml plastic dispensers

Otic solution: 0.2% (0.5 mg in 0.25 ml) in single-use container

Tablets: 250 mg, 500 mg, 750 mg

Indications and dosages

Acute sinusitis

Adults: 500 mg P.O. q 12 hours or 400 mg I.V. q 12 hours for 10 days


Adults: 500 mg P.O. q 12 hours or 400 mg I.V. q 12 hours for 28 days

Intra-abdominal infections

Adults: 500 mg P.O. q 12 hours or 400 mg I.V. q 12 hours for 7 to 14 days

Febrile neutropenic patients

Adults: 400 mg I.V. q 8 hours for 7 to 14 days


Adults: 500 mg P.O. as a single dose

Infectious diarrhea

Adults: 500 mg P.O. q 12 hours for 5 to 7 days

Inhalation anthrax (postexposure)

Adults: 500 mg P.O. q 12 hours for 60 days or 400 mg I.V. q 12 hours for 60 days

Children: 15 mg/kg P.O. q 12 hours for 60 days (not to exceed 500 mg/dose), or 10 mg/kg I.V. q 12 hours for 60 days, not to exceed 400 mg/dose

Infections of lower respiratory tract, skin and skin structures, bones, and joints

Adults: 500 to 750 mg P.O. q 12 hours or 400 mg I.V. q 8 hours for 7 to 14 days. Severe bone and joint infections may necessitate up to 6 weeks of therapy.

Nosocomial pneumonia

Adults: 400 mg I.V. q 8 hours for 10 to 14 days

Typhoid fever

Adults: 500 mg P.O. q 12 hours for 10 days

Urinary tract infections

Adults: 250 to 500 mg P.O. q 12 hours or 200 to 400 mg I.V. q 12 hours for 3 days in acute uncomplicated infection or for 7 to 14 days in acute complicated infection

Complicated urinary tract infections or pyelonephritis

Children ages 1 to 17: 6 to 10 mg/kg I.V. q 8 hours for 10 to 21 days (maximum, 400 mg/dose; not to be exceeded, even in patients weighing more than 51 kg [112 lb]). Or, 10 to 20 mg/kg P.O. q 12 hours for 10 to 21 days (maximum, 750 mg/dose; not to be exceeded, even in patients weighing more than 51 kg).

Acute otitis externa

Adults: Instill contents of one single-use otic solution container (0.5 mg) into affected ear b.i.d. (approximately 12 hours apart) for 7 days

Bacterial conjunctivitis caused by susceptible organisms

Adults: 0.5″ ribbon of ophthalmic ointment applied to conjunctival sac t.i.d. on first 2 days, then 0.5" ribbon b.i.d. for 5 days. Or one to two drops of ophthalmic solution applied to conjunctival sac q 2 hours while awake for 2 days, then one or two drops q 4 hours while awake for 5 days.

Corneal ulcers caused by susceptible organisms

Adults: Two drops of ophthalmic solution instilled into affected eye q 15 minutes for first 6 hours, then two drops into affected eye q 30 minutes for remainder of first day. On second day, two drops of ophthalmic solution hourly; on days 3 through 14, two drops q 4 hours.

Dosage adjustment

• Renal impairment or insufficiency

Off-label uses

• Chancroid

• Cystic fibrosis

• Pseudomembranous colitis caused by anti-infectives


• Hypersensitivity to drug or other fluoroquinolones

• Comcomitant administration of tizanidine


Use cautiously in:

• cirrhosis, renal impairment, underlying CNS disease

• concurrent use of theophylline (risk of serious or fatal reactions, such as cardiac arrest, seizures, status epilepticus, and respiratory failure)

• elderly patients

• pregnant or breastfeeding patients

• children younger than age 18 (except for complicated urinary tract infection, pyelonephritis, and postexposure inhalation antrax only).


• Administer oral drug with or without food but not with dairy products or calcium-fortified juices alone; however, drug may be taken with a meal that contains these products.

• Infuse I.V. dose over at least 1 hour, using pump to ensure 1-hour duration.

Know that too-rapid I.V. infusion increases risk of anaphylaxis and other adverse reactions.

Know that treatment with ophthalmic solution may be continued after 14 days if corneal re-epithelialization hasn't occurred.

Adverse reactions

CNS: agitation, headache, restlessness, confusion, delirium, peripheral neuropathy, toxic psychosis

CV: orthostatic hypotension, vasculitis

EENT: nystagmus; with ophthalmic use-blurred vision; burning, stinging, irritation, itching, tearing, and redness of eyes; eyelid itching, swelling, or crusting; sensitivity to light

GI: nausea, vomiting, diarrhea, constipation, abdominal pain or discomfort, dyspepsia, dysphagia, flatulence, pancreatitis, pseudomembranous colitis

GU: albuminuria, candiduria, renal calculi

Hematologic: methemoglobinemia, agranulocytosis, hemolytic anemia

Hepatic: jaundice, hepatic necrosis

Metabolic: hyperglycemia, hyperkalemia

Musculoskeletal: myalgia, myoclonus, tendinitis, tendon rupture

Skin: rash, exfoliative dermatitis, toxic epidermal necrolysis, erythema multiforme photosensitivity

Other: injection-site reaction, altered taste, anosmia, exacerbation of myasthenia gravis, overgrowth of nonsusceptible organisms, hypersensitivity reactions including anaphylaxis and Stevens-Johnson syndrome


Drug-drug. Antacids, bismuth subsalicylate, iron salts, sucralfate, zinc salts: decreased ciprofloxacin absorption

Cyclosporine: transient creatinine increase

Hormonal contraceptives: reduced contraceptive efficacy

Oral anticoagulants: increased anticoagulant effects

Phenytoin: increased or decreased phenytoin blood level

Probenecid: decreased renal elimination of ciprofloxacin, causing increased blood level

Theophylline: increased theophylline blood level, greater risk of toxicity

Tizanidine: significantly elevated tizanidine plasma level

Drug-diagnostic tests. Alanine aminotransferase, alkaline phosphatase, aspartate aminotransferase, bilirubin, cholesterol, glucose, lactate dehydrogenase, potassium, triglycerides: increased levels Prothrombin time: prolonged

Drug-food. Caffeine: interference with caffeine clearance

Concurrent tube feedings, milk or yogurt (when consumed alone with ciprofloxacin): impaired drug absorption

Drug-herbs. Fennel: decreased drug absorption

Patient monitoring

• In patients with renal insufficiency, assess creatinine level before giving first dose and at least once a week during prolonged therapy. Monitor drug blood level closely.

Watch for signs and symptoms of serious adverse reactions, including GI problems, jaundice, tendon problems, and hypersensitivity reactions.

Patient teaching

• Tell patient to take drug with or without food at the same time each day.

• Advise patient not to take drug with dairy products or calcium-fortified juices alone or with caffeinated beverages.

• Advise patient to drink 8 oz of water every hour while awake to ensure adequate hydration.

Instruct patient to stop taking drug and notify prescriber at first sign of burning, numbness, or tingling in hands or feet; yellow eyes or skin; unusual tiredness; persistent diarrhea; rash; or tendon pain, swelling, or inflammation.

• Advise patient to avoid excessive exposure to sun or ultraviolet light and to discontinue drug and notify prescriber if phototoxicity (burning, erythema, exudation, vesicles, blistering, edema) occurs.

• Advise patient taking hormonal contraceptives to use supplemental birth control method, such as condoms, because drug reduces contraceptive efficacy.

• Inform breastfeeding patient that drug is excreted in breast milk and can affect infant's bone growth. Advise her to consult prescriber before using drug.

• Teach patient how to use eye ointment or solution and tell patient not to touch eye dropper tip to any surface, to avoid contamination.

• Instruct patient how to use ear solution and to lie with affected ear upward for at least 1 minute after instilling solution.

• Caution patient with bacterial conjunctivitis not to wear contact lenses.

• As appropriate, review all other significant and life-threatening adverse reactions and interactions, especially those related to the drugs, tests, foods, and herbs mentioned above.

McGraw-Hill Nurse's Drug Handbook, 7th Ed. Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved


(sip-roe-flox-a-sin) ,


(trade name),

Cipro XR

(trade name)


Therapeutic: anti infectives
Pharmacologic: fluoroquinolones
Pregnancy Category: C


Oral: Intravenous: Treatment of the following bacterial infections:
  • Urinary tract and gynecologic infections, including cystitis, and prostatitis,
  • Respiratory tract infections including acute sinusitis, acute exacerbations of chronic bronchitis, and pneumonia,
  • Skin and skin structure infections,
  • Bone and joint infections,
  • Infectious diarrhea,
  • Complicated intra-abdominal infections (with metronidazole),
  • Typhoid fever.
Post-exposure prophylaxis of inhalational anthrax.Cutaneous anthrax.Febrile neutropenia.Acute pulmonary exacerbations in cystic fibrosis.


Inhibits bacterial DNA synthesis by inhibiting DNA gyrase enzyme.

Therapeutic effects

Death of susceptible bacteria.
Active against gram-positive pathogens, including:
  • Staphylococcus aureus,
  • Staphylococcus epidermidis,
  • Staphylococcus saprophyticus,
  • Streptococcus pyogenes,
  • Streptococcus pneumoniae,
  • Enterococcus faecalis,
  • Bacillus anthracis (anthrax).
Gram-negative spectrum notable for activity against:
  • Escherichia coli,
  • Klebsiella pneumoniae,
  • Enterobacter cloacae,
  • Salmonella typhi,
  • Shigella spp,
  • Proteus mirabilis,
  • Proteus vulgaris,
  • Providencia stuartii,
  • Providencia rettgeri,
  • Morganella morganii,
  • Pseudomonas aeruginosa,
  • Serratia marcescens,
  • Haemophilus influenzae,
  • ,
  • Moraxella catarrhalis,
  • Campylobacter jejuni.


Absorption: 70% absorbed after oral administration; IV administration results in complete bioavailability.
Distribution: Widely distributed. High tissue and urinary levels are achieved. Crosses the placenta; enters breast milk.
Protein Binding: 20–40%.
Metabolism and Excretion: —15% metabolized by the liver, 40–50% excreted unchanged by the kidneys.
Half-life: 4 hr.

Time/action profile (blood levels)

POrapid1–2 hr12 hr
PO-ERrapid1–4 hr24 hr
IVrapidend of infusion12 hr


Contraindicated in: Hypersensitivity (cross-sensitivity within class may exist); History of myasthenia gravis (may worsen symptoms including muscle weakness and breathing problems); Use with tizanidine; Obstetric: Do not use unless potential benefit outweighs potential fetal risk; Pediatric: Use only if no alternatives in children 1–17 years due to possible arthropathy.
Use Cautiously in: Known or suspected CNS disorder; Renal impairment (dose ↓ if CCr ≤50 mL/min); Concurrent use of corticosteroids (↑ risk of tendinitis/tendon rupture); Kidney, heart, or lung transplant patients (↑ risk of tendinitis/tendon rupture); Patients with history of or at risk for QTc prolongation, may prolong QTc interval; Lactation: Safety not established except for treatment of anthrax; Geriatric: ↑ risk of adverse reactions.

Adverse Reactions/Side Effects

Central nervous system

  • elevated intracranial pressure (including pseudotumor cerebri) (life-threatening)
  • seizures (life-threatening)
  • agitation
  • confusion
  • depression
  • dizziness
  • drowsiness
  • hallucinations
  • headache
  • insomnia
  • nightmares
  • paranoia
  • tremor


  • hepatotoxicity (life-threatening)
  • pseudomembranous colitis (life-threatening)
  • abdominal pain
  • diarrhea (most frequent)
  • nausea (most frequent)
  • ↑ liver enzymes


  • vaginitis


  • photosensitivity
  • rash


  • hyperglycemia
  • hypoglycemia


  • eosinophilia


  • phlebitis at IV site


  • tendinitis
  • tendon rupture


  • peripheral neuropathy


    hypersensitivity reactions including :
  • anaphylaxis (life-threatening)


Drug-Drug interaction

Concurrent use with theophylline may result in ↑ theophylline concentrations and therefore serious and potentially fatal reactions due to theophylline toxicity; if concurrent use cannot be avoided serum theophylline levels should be monitored.Administration with antacids, iron salts, bismuth subsalicylate, sucralfate, and zinc salts ↓ absorption.May alter the effects of warfarin.May ↓ levels and effectiveness of phenytoin.Serum levels may be ↓ by antineoplastics .Cimetidine may interfere with elimination.Beneficial effects may be antagonized by nitrofurantoin.Probenecid ↓ renal elimination.May ↑ risk of nephrotoxicity from cyclosporine.Concurrent use with foscarnet may ↑ risk of seizures.Concurrent therapy with corticosteroids may ↑ risk of tendon rupture.May ↓ metabolism of tizanidine, use contraindicated.Fennel ↓ bioavailability.Absorption is impaired by concurrent enteral feeding (because of metal cations).Absorption is ↓ by food and/or dairy products (take 1 hr before or 2 hr after).


Most infections

Oral (Adults) 500–750 mg q 12 hr.
Intravenous (Adults) 400 mg q 12 hr.

Renal Impairment

Oral (Adults) CCr 30–50 mL/min—250–500 mg q 12 hr; CCr 5–29 mL/min—250–500 mg q 18 hr; Hemodialysis or peritoneal dialysis—250–500 mg q 24 hr.

Renal Impairment

Intravenous (Adults) CCr 5–29 mL/min—200–400 mg q 18–24 hr.

Urinary tract infections

Oral (Adults) 250–500 mg q 12 hr; or 1000 mg q 24 hr for 10–14 days as extended-release tablets.Uncomplicated urinary tract infections—100 mg q 12 hr for 3 days or 500 mg q 24 hr for 3 days as extended-release tablets.
Oral (Children 1–17 yr) Complicated urinary tract infections—10–15 mg/kg every 12 hr (not to exceed 750 mg/dose)for 10–21 days.
Intravenous (Adults) 200 mg q 12 hr.
Intravenous (Children 1–17 yr) Complicated urinary tract infections—6–10 mg/kg every 8 hr (not to exceed 400 mg/dose)for 10–21 days.

Inhalational Anthrax

Oral Intravenous (Adults) 400 mg q 12 hr IV, change to 500 mg PO twice daily when clinically appropriate for a total of 60 days; one or two other anti-infectives may be added initially, depending on clinical situation.
Oral Intravenous (Children) 10 mg/kg q 12 hr IV (maximum: 400 mg/dose), change to 15 mg/kg PO q 12 hr (maximum: 500 mg/dose) when clinically appropriate for a total of 60 days; one or two other anti-infectives may be added initially, depending on clinical situation.

Cutaneous anthrax

Oral (Adults) 500 mg twice daily for 60 days; some patients may require intravenous therapy initially depending on clinical situation (for IV dose see inhalational anthrax above).
Oral (Children) 10–15 mg/kg q 12 hr for 60 days (maximum: 1 g/day); some patients may require intravenous therapy initially depending on clinical situation (for IV dose see inhalational anthrax above).

Cystic Fibrosis

Oral (Children 5–17 yrs) 20 mg/kg q 12 hr.
Intravenous (Children 5–17 yrs) 15 mg/kg q 8 hr for 1 week followed by oral therapy.

Availability (generic available)

Tablets: 100 mg, 250 mg, 500 mg, 750 mg
Extended-release tablets: 500 mg, 1000 mg
Oral suspension strawberry flavor: 250 mg/5 mL, 500 mg/5 mL
Solution for injection: 10 mg/mL
Premixed infusion: 200 mg/100 mL D5W, 400 mg/200 mL D5W

Nursing implications

Nursing assessment

  • Assess for infection (vital signs; appearance of wound, sputum, urine, and stool; WBC; urinalysis; frequency and urgency of urination; cloudy or foul-smelling urine) at beginning of and throughout therapy.
  • Obtain specimens for culture and sensitivity before initiating therapy. First dose may be given before receiving results.
  • Observe for signs and symptoms of anaphylaxis (rash, pruritus, laryngeal edema, wheezing). Discontinue drug and notify health care professional immediately if these problems occur. Keep epinephrine, an antihistamine, and resuscitation equipment close by in case of an anaphylactic reaction.
  • Monitor bowel function. Diarrhea, abdominal cramping, fever, and bloody stools should be reported to health care professional promptly as a sign of pseudomembranous colitis. May begin up to several weeks following cessation of therapy.
  • Lab Test Considerations: .
    • May cause ↑ serum AST, ALT, LDH, bilirubin, and alkaline phosphatase.
    • May also cause ↑ or ↓ serum glucose.

Potential Nursing Diagnoses

Risk for infection (Patient/Family Teaching)


  • Oral: .
    • Administer on an empty stomach 1 hr before or 2 hr after meals, with a full glass of water. Products or foods containing calcium, magnesium, aluminum, iron, or zinc should not be ingested for 4 hr before and 2 hr after administration.
    • If gastric irritation occurs, ciprofloxacin may be administered with meals. Food slows and may slightly decrease absorption.
    • Regular tablets can be crushed for patients unable to swallow. Extended-release (XR) tablets should be swallowed whole; do not split, crush, or chew.
    • Do not administer 5% or 10% oral solution through an enteral feeding tube or with enteral feedings; may decrease absorption.
  • Intravenous Administration
  • pH: 3.3–4.6.
  • Intermittent Infusion: Diluent: Dilute with 0.9% NaCl or D5W. Stable for 14 days at refrigerated or room temperature. Concentration: 1–2 mg/mL.
  • Rate: Administer over 60 min into a large vein to minimize venous irritation.
  • Y-Site Compatibility: alemtuzumab, amifostine, amiodarone, anakinra, anidulafungin, argatroban, aztreonam, bivalirudin, bleomycin, calcium gluconate, carboplatin, carmustine, caspofungin, ceftaroline, ceftazidime, cisatracurium, cisplatin, cyclophosphamide, cytarabine, dactinomycin, daptomycin, dexmedetomidine, dexrazoxane, digoxin, diltiazem, diphenhydramine, dobutamine, docetaxel, dolasetron, dopamine, doripenem, doxacurium, doxorubicin, doxorubicin liposome, epirubicin, eptifibatide, ertapenem, etoposide, etoposide phosphate, fenoldopam, fludarabine, gemcitabine, gentamicin, granisetron, hetastarch, hydromorphone, idarubicin, ifosfamide, irinotecan, leucovorin calcium, lidocaine, linezolid, lorazepam, mechlorethamine, meperidine, methotrexate, metoclopramide, metronidazole, midazolam, midodrine, milrinone, mitoxantrone, mycophentolate, nesiritide, octreotide, ondansetron, oxaliplatin, oxytocin, paclitaxel, palonosetron, pamidronate, pancuronium, potassium acetate, potassium chloride, promethazine, quinupristin-dalfopristin, ranitidine, remifentanil, rocuronium, sodium acetate, tacrolimus, telavancin, teniposide, thiotepa, tigecycline, tirofiban, tobramycin, trastuzumab, vancomycin, vasopressin, vecuronium, verapamil, vinblastine, vincristine, vinorelbine, voriconazole, zoledronic acid
  • Y-Site Incompatibility: Manufacturer recommends temporarily discontinuing other solutions when administering ciprofloxacin.acyclovir, aminocaproic acid, aminophylline, amphotericin B lipid complex, amphotericin B liposome, ampicillin/sulbactam, cefepime, dexamethasone, fluorouracil, foscarnet, furosemide, heparin, hydrocortisone, magnesium sulfate, methylprednisolone, pantoprazole, pemetrexed, phenytoin, piperacillin/tazobactam, potassium phosphates, propofol, rituxumab, sodium phosphates, warfarin

Patient/Family Teaching

  • Instruct patient to take medication as directed at evenly spaced times and to finish drug completely, even if feeling better. Take missed doses as soon as possible, unless almost time for next dose. Do not double doses. Advise patient that sharing of this medication may be dangerous.
  • Advise patients to notify health care professional immediately if they are taking theophylline.
  • Encourage patient to maintain a fluid intake of at least 1500–2000 mL/day to prevent crystalluria.
  • Advise patient that antacids or medications containing calcium, magnesium, aluminum, iron, or zinc will decrease absorption and should not be taken within 4 hr before and 2 hr after taking this medication.
  • May cause dizziness and drowsiness. Caution patient to avoid driving or other activities requiring alertness until response to medication is known.
  • Caution patient to use sunscreen and protective clothing to prevent phototoxicity reactions during and for 5 days after therapy. Notify health care professional if a sunburn-like reaction or skin eruption occurs.
  • Instruct patients being treated for gonorrhea that partners also must be treated.
  • Instruct patient to notify health care professional of all Rx or OTC medications, vitamins, or herbal products being taken and to consult health care professional before taking any other Rx, OTC, or herbal products.
  • Advise patient to report signs of superinfection (furry overgrowth on the tongue, vaginal itching or discharge, loose or foul-smelling stools).
  • Instruct patient to notify health care professional if fever and diarrhea develop, especially if stool contains blood, pus, or mucus. Advise patient not to treat diarrhea without consulting health care professional.
  • Instruct patient to notify health care professional immediately if signs and symptoms of hepatotoxicity (anorexia, jaundice, dark urine, pruritus, or tender abdomen), rash, signs of hypersensitivity, or tendon (shoulder, hand, Achilles, and other) pain, swelling, or inflammation occur. If tendon symptoms occur, avoid exercise and use of the affected area. Increased risk in >65 yrs old, kidney, heart and lung transplant recipients, and patients taking corticosteroids concurrently. Therapy should be discontinued.

Evaluation/Desired Outcomes

  • Resolution of the signs and symptoms of bacterial infection. Time for complete resolution depends on organism and site of infection.
  • Post-exposure treatment of inhalational anthrax or cutaneous anthrax.
Drug Guide, © 2015 Farlex and Partners


A trademark for the drug ciprofloxacin.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
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"In the Cipro case, they felt bound by Tamoxifen," says Crowell & Moring Partner Daniel Edelman.
Amoxicillin-clavulanate * Augmentin Carbamazepine * Tegretol Chlorpromazine * Thorazine Ciprofloxacin * Cipro Citalopram * Celexa Donepezil * Aricept Galantamine * Reminyl Haloperidol * Haldol Levofloxacin * Levaquin Memantine * Namenda Olanzapine * Zyprexa Risperidone * Risperdal Rivastigmine * Exelon Thioridazine * Mellaril Thiothixene * Navane Valproate * Depakote
But there has been a shift since controversy developed over an antibiotic called Baytril that is closely related to Cipro, a drug used to treat anthrax and foodborne illnesses caused by campylobacter and salmonella in humans.
The human version of Baytril, Cipro, is used to treat anthrax.
It's also inexpensive, and it knocks out fewer beneficial bacteria than Cipro.
Imagine the positioning opportunity: The United States, the world's largest consumer market, is grappling with an anthrax crisis and your company has the patent for Cipro, widely considered the most effective antibiotic to Light the disease.
The drug Cipro, noted for its ability to treat all forms of anthrax, is a fluoroquinolone.
Antibiotics such as erythromycin Tegretol and Biaxin Antibiotics such as erythromycin, Hismanal Zithromax, and Dynabac Antibiotics such as tetracycline, A multivitamin, antacids, Cipro, and Levaquin milk or other dairy products, or calcium-fortified orange juice Antidepressants such as Paxil, Tegretol, St.
postal system last October, most people had probably never heard of Ciprofloxacin, the anthrax-killing drug more commonly known as Cipro. Even fewer were likely to have heard of its cousin, Baytril.
Within a week of NBC anchor and terror target Tom Brokaw's on-air declaration "In Cipro we trust," Health and Human Services Secretary Tommy Thompson, the glad-handing former Wisconsin governor best known for cracking down on his state's welfare mothers, began sounding like the minister in charge of Canada's national health service.