Minocycline (Systemic) Uses Class: Brands*:
Transcription
Minocycline (Systemic) Uses Class: Brands*:
46067 AHFS Essentials ASHPI BATCH RIGHT Minocycline (Systemic) Minocycline (Systemic) Antibacterial; semisynthetic tetracycline antibiotic. Class: Tetracyclines 8:12.24 (AHFS primary); AM250 (VA primary) Brands*: Dynacin; Minocin; Myrac *also available generically 21 sider that anti-infectives may not eliminate C. trachomatis in all cases of chronic trachoma. Treatment of lymphogranuloma venereum (genital, inguinal, or anorectal infections) caused by C. trachomatis. Doxycycline is the preferred tetracycline for these infections. Treatment of psittacosis (ornithosis) caused by C. psittaci. Doxycycline and tetracycline are drugs of choice. For initial treatment of severely ill patients, use IV doxycycline. top of rh base of rh cap height base of text Clostridium Infections Alternative for treatment of infections caused by Clostridium. Tetracyclines are alternatives to metronidazole or penicillin G for adjunctive treatment of C. tetani infections. Uses Respiratory Tract Infections Treatment of respiratory tract infections caused by Mycoplasma pneumoniae. Treatment of respiratory tract infections caused by Haemophilus influenzae, Streptococcus pneumoniae, or Klebsiella. Should only be used for treatment of infections caused by these bacteria when in vitro susceptibility tests indicate the organism is susceptible. Acinetobacter Infections Alternative to imipenem or meropenem for treatment of infections caused by Acinetobacter. Acne Adjunctive treatment of moderate to severe inflammatory acne. Not indicated for Enterobacteriaceae Infections Treatment of infections caused by susceptible Escherichia coli, Enterobacter aerogenes, Klebsiella, or Shigella. Should only be used for treatment of infections caused by these common gram-negative bacteria when other appropriate anti-infectives are contraindicated or ineffective and when in vitro susceptibility tests indicate the organism is susceptible. Fusobacterium Infections Alternative to penicillin G for treatment of infections caused by Fusobacterium fusiforme (Vincent’s infection). Gonorrhea and Associated Infections Alternative for treatment of uncomplicated gonorrhea (including urethritis) caused by susceptible Neisseria gonorrhoeae. Tetracyclines are considered inadequate therapy and are not recommended by CDC for treatment of gonorrhea. treatment of noninflammatory acne. Actinomycosis Treatment of actinomycosis caused by Actinomyces israelii; oral tetracyclines used as follow-up after initial parenteral penicillin G. Amebiasis Adjunct to amebicides for treatment of acute intestinal amebiasis. Tetracyclines generally not recommended for treatment of amebiasis caused by Entamoeba. Anthrax Alternative to doxycycline for postexposure prophylaxis to reduce the incidence or progression of disease following a suspected or confirmed exposure to aerosolized Bacillus anthracis spores (inhalational anthrax). Initial drug of choice for such prophylaxis is ciprofloxacin or doxycycline; doxycycline is the preferred tetracycline because of ease of administration and proven efficacy in monkey studies. Alternative to doxycycline for treatment of inhalational anthrax when a parenteral regimen is not available (e.g., supply or logistic problems because large numbers of individuals require treatment in a mass casualty setting). A multiple-drug parenteral regimen (ciprofloxacin or doxycycline and 1 or 2 other anti-infectives predicted to be effective) is preferred for treatment of inhalational anthrax that occurs as the result of exposure to anthrax spores in the context of biologic warfare or bioterrorism. Bartonella Infections Treatment of infections caused by Bartonella bacilliformis. Brucellosis Treatment of brucellosis; tetracyclines considered drugs of choice. Used in conjunction with other anti-infectives (e.g., streptomycin or gentamicin and/or rifampin), especially for severe infections or when there are complications (e.g., endocarditis, meningitis, osteomyelitis). Campylobacter Infections Treatment of infections caused by Campylobacter. Tetracyclines are alternatives, not drugs of choice. Chancroid Treatment of chancroid caused by Haemophilus ducreyi. Not included in CDC recommendations for treatment of chancroid. Chlamydial Infections Treatment of uncomplicated urethral, endocervical, or rectal infections caused by Chlamydia trachomatis. Doxycycline is the preferred tetracycline for treatment of these infections, including presumptive treatment of chlamydial infections in patients with gonorrhea. Treatment of trachoma and inclusion conjunctivitis caused by C. trachomatis. Con- Granuloma Inguinale (Donovanosis) Treatment of granuloma inguinale (donovanosis) caused by Calymmatobacterium granulomatis. Doxycycline is the tetracycline recommended as drug of choice by CDC. Listeria Infections Alternative for treatment of listeriosis caused by Listeria monocytogenes. Not usually considered a drug of choice or alternative for these infections. Malaria Other tetracyclines (doxycycline) used for prevention of malaria, but efficacy of minocycline not fully determined. CDC recommends that individuals receiving longterm minocycline therapy (e.g., for acne) who also require doxycycline malaria prophylaxis should discontinue minocycline 1– 2 days prior to travel and initiate doxycycline for such prophylaxis; minocycline can be reinitiated after doxycycline malaria prophylaxis is finished. Mycobacterial Infections Alternative for use in multiple-drug regimens for treatment of multibacillary leprosy†. WHO recommends minocycline as an alternative for multibacillary leprosy regimens in patients who will not accept or cannot tolerate clofazimine and when rifampin cannot be used because of adverse effects, intercurrent disease (e.g., chronic hepatitis), or infection with rifampin-resistant Mycobacterium leprae. Component of a single-dose rifampin-based multiple-drug regimen (ROM) for treatment of single-lesion paucibacillary leprosy† (i.e., a single skin lesion with definite loss of sensation but without nerve trunk involvement). A ROM regimen of a single dose of rifampin, single dose of ofloxacin, and single dose of minocycline is recommended by WHO as an acceptable and cost-effective alternative regimen in antileprosy programs that have detected a large number of patients (e.g., more than 1000 annually) with single-lesion paucibacillary leprosy. Treatment of cutaneous infections caused by M. marinum; a drug of choice. Neisseria meningitidis Infections Elimination of nasopharyngeal carriage of Neisseria meningitidis. CDC and AAP recommend use of rifampin, ceftriaxone, or ciprofloxacin for such carriers and no longer recommend use of minocycline. Should not be used for treatment of infections caused by N. meningitidis. Nocardiosis Alternative to co-trimoxazole for treatment of nocardiosis† caused by Nocardia. Nongonococcal Urethritis Treatment of nongonococcal urethritis (NGU) caused by Ureaplasma urealyticum, C. trachomatis, or Mycoplasma. Doxycycline usually is the tetracycline of choice for NGU. short stand 46067 AHFS Essentials 22 ASHPI BATCH LEFT top of rh base of rh Minocycline (Systemic) Consider that some cases of recurrent urethritis following treatment may be caused by tetracycline-resistant U. urealyticum. Plague Treatment of plague caused by Yersinia pestis. Regimen of choice is streptomycin or gentamicin (with or without doxycycline). Relapsing Fever Treatment of relapsing fever caused by Borrelia recurrentis. Tetracyclines are drugs of choice. Pediatric Patients General Pediatric Dosage Oral or IV: Children ⬎8 years of age: 4 mg/kg initially followed by 2 mg/ kg every 12 hours. Mycobacterial Infections ⬎Leprosy† Oral: Children 5– 14 years of age: for treatment of single-lesion paucibacillary leprosy† in certain patient groups, WHO recommends a single-dose ROM regimen that includes a single 300-mg dose of rifampin, a single 200-mg dose of ofloxacin, and a single 50-mg dose of minocycline. Children ⬍5 years of age: WHO recommends that an appropriately adjusted dose of each drug in the single-dose ROM regimen be used. Rheumatoid Arthritis Treatment of rheumatoid arthritis†. One of several disease-modifying antirheumatic drugs (DMARDs) that can be used when DMARD therapy is appropriate. Rickettsial Infections Treatment of rickettsial infections including Rocky Mountain spotted fever, typhus fever and the typhus group, Q fever, rickettsialpox, and tick fevers caused by Rickettsiae. Tetracyclines are drugs of choice for treatment of most rickettsial infections; doxycycline usually is the preferred tetracycline. cap height base of text Adults General Adult Dosage Oral or IV: 200 mg initially followed by 100 mg every 12 hours. Alternatively, if more frequent doses are preferred, 100– 200 mg initially followed by 50 mg 4 times daily. Acne Oral: 50 mg 1– 3 times daily. Syphilis Alternative to penicillin G for treatment of primary, secondary, latent, or tertiary syphilis (not neurosyphilis) in nonpregnant adults and adolescents hypersensitive to penicillins. Doxycycline and tetracycline are the preferred tetracyclines in patients hypersensitive to penicillins. Use tetracyclines only if compliance and follow-up can be ensured since efficacy not well documented. Tularemia Treatment of tularemia caused by Francisella tularensis. Tetracyclines considered alternatives to streptomycin (or gentamicin); risk of relapse and primary treatment failure may be higher than with aminoglycosides. Vibrio Infections Treatment of cholera caused by Vibrio cholerae. Doxycycline and tetracycline are drugs of choice; used as an adjunct to fluid and electrolyte replacement in moderate to severe disease. Yaws Alternative to penicillin G for treatment of yaws caused by Treponema pertenue. Dosage and Administration Administration Administer orally or by slow IV infusion. IV route recommended only when oral therapy is not indicated or feasible; oral should replace IV as soon as possible. Risk of thrombophlebitis should be considered when minocycline is given IV. Oral Administration Tablets and pellet-filled capsules should be administered at least 1 hour before or 2 hours after meals. Capsules may be administered with or without food. Administer capsules, pellet-filled capsules, and tablets with adequate amounts of fluid to reduce the risk of esophageal irritation and ulceration. The pellet-filled capsules should be swallowed whole. IV Infusion For solution and drug compatibility information, see Compatibility under Stability. Reconstitution Reconstitute vial containing 100 mg with 5 mL of sterile water for injection to provide a solution containing 20 mg/mL. Dilution Each 100 mg of reconstituted minocycline solution must be further diluted prior to administration with 500 mL to 1 L of compatible IV solution (see Compatibility under Stability) to provide solutions containing 100– 200 mcg/mL. These diluted IV solutions should be administered immediately after preparation. Rate of Administration Usually infused IV over 6 hours. Dosage Available as minocycline hydrochloride; dosage expressed in terms of minocycline. Chlamydial Infections ⬎Uncomplicated Urethral, Endocervical, or Rectal Infections Oral: 100 mg every 12 hours given for ⱖ7 days. Gonorrhea and Associated Infections ⬎Uncomplicated Gonorrhea (except Urethritis or Anorectal in Men) Oral: 200 mg initially followed by 100 mg every 12 hours given for ⱖ 4 days; follow-up cultures should be done within 2– 3 days after completion of therapy. No longer recommended for gonorrhea by CDC or other experts. ⬎Gonococcal Urethritis in Men Oral: 100 mg every 12 hours given for 5 days. No longer recommended for gonorrhea by CDC or other experts. Mycobacterial Infections ⬎Leprosy† Oral: For treatment of multibacillary leprosy† in those who cannot receive rifampin because of adverse effects, intercurrent disease (e.g., chronic hepatitis), or infection with rifampin-resistant M. leprae, WHO recommends supervised administration of a regimen of clofazimine (50 mg daily), ofloxacin (400 mg daily), and minocycline (100 mg daily) given for 6 months, followed by a regimen of clofazimine (50 mg daily) and minocycline (100 mg daily) given for at least an additional 18 months. For treatment of multibacillary leprosy in adults who will not accept or cannot tolerate clofazimine, WHO recommends supervised administration of a once-monthly ROM regimen that includes rifampin (600 mg once monthly), ofloxacin (400 mg once monthly), and minocycline (100 mg once monthly) given for 24 months. For treatment of single-lesion paucibacillary leprosy† in certain patient groups, WHO recommends a single-dose ROM regimen that includes a single 600-mg dose of rifampin, a single 400-mg dose of ofloxacin, and a single 100-mg dose of minocycline. ⬎Mycobacterium marinum Infections Oral: Manufacturers state optimum dosage has not been established, but 100 mg every 12 hours for 6– 8 weeks has been effective. 100 mg twice daily for ⱖ3 months recommended by ATS for treatment of cutaneous infections. A minimum of 4– 6 weeks of treatment usually is necessary to determine whether the infection is responding. Neisseria meningitidis Infections ⬎N. meningitidis Carriers Oral: 100 mg every 12 hours given for 5 days. Nocardiosis† Oral: 200 mg initially followed by 100 mg every 12 hours given for 12– 18 months. Nongonoccocal Urethritis Oral: 100 mg every 12 hours given for ⱖ 7 days. Rheumatoid Arthritis† Oral: 100 mg twice daily. A benefit may be evident within 1– 3 months. Syphilis Oral: 200 mg initially followed by 100 mg every 12 hours given for 10– 15 days. Close follow-up and laboratory tests are recommended. short stand 46067 AHFS Essentials ASHPI BATCH RIGHT Minocycline (Systemic) Vibrio Infections ⬎Cholera Oral: 200 mg initially followed by 100 mg every 12 hours given for 2– 3 days. Prescribing Limits Pediatric Patients Oral or IV: Do not exceed usual adult dosage. Adults IV: Maximum 400 mg daily. Special Populations Renal Impairment Adjust dosage by decreasing doses or increasing dosing interval. Dosage should not exceed 200 mg daily in patients with impaired renal function. Cautions Contraindications • Known hypersensitivity to minocycline, any tetracycline, or any component in the preparation. Warnings/Precautions Warnings Dental and Bone Effects Use during tooth development (e.g., pregnancy, children ⬍8 years of age) may cause permanent yellow-gray to brown discoloration of teeth and enamel hypoplasia. Effects are most common following long-term use, but may occur following repeated short-term use. Tetracyclines form a stable calcium complex in any bone-forming tissue. Reversible decrease in fibula growth rate has occurred in prematures receiving tetracycline. Use not recommended in children ⬍8 years of age unless other appropriate drugs are ineffective or are contraindicated or unless the benefits in certain indications (e.g., anthrax) outweigh the risks. (See Pediatric Use under Cautions.) Fetal/Neonatal Morbidity Animal studies indicate possible fetal toxicity (e.g., retardation of skeletal development) and embryotoxicity. If used during pregnancy or if patient becomes pregnant while receiving minocycline, patient should be apprised of the potential hazard to the fetus. (See Pregnancy under Cautions.) Nervous System Effects Possiblility of adverse CNS effects (light-headedness, dizziness, vertigo) that may impair ability to drive vehicles or operate hazardous machinery. Vestibular reactions occur more frequently with minocycline than with other tetracyclines. Symptoms may disappear during therapy and usually rapidly disappear when the drug is discontinued. Benign intracranial hypertension (pseudotumor cerebri) in adults reported with tetracyclines; usually manifested as headache and blurred vision. Bulging fontanels reported in infants. Effects usually resolve when drug discontinued, but possibility for permanent sequelae exists. Renal Effects Tetracyclines have antianabolic effects and may increase BUN. In patients with impaired renal function, high serum minocycline concentrations may result in azotemia, hyperphosphatemia, and acidosis. Excessive drug accumulation and possible liver toxicity may occur if usual dosage is used in patients with renal impairment. (See Renal Impairment under Dosage and Administration.) Laboratory Monitoring Periodically assess organ system function, including renal, hepatic and hematopoietic, during long-term therapy. Sensitivity Reactions Photosensitivity Reactions Photosensitivity, manifested by an exaggerated sunburn reaction, reported with tetracyclines. Photosensitivity reactions may develop within a few minutes to several hours after sun exposure and usually persist 1– 2 days after discontinuance of the drug. Most reactions result from accumulation of tetracyclines in skin and are phototoxic in nature; photoallergic reactions may also occur. Discontinue drug at first evidence of skin erythema. Hypersensitivity Reactions Urticaria, angioneurotic edema, polyarthralgia, anaphylaxis, anaphylactoid purpura, pericarditis, exacerbation of systemic lupus erythematosus and, rarely, pulmonary infiltrates with eosinophilia have been reported. A transient lupus-like syndrome and serum sickness-like reaction also have been reported. 23 top of rh base of rh cap height base of text General Precautions Hepatotoxicity Hepatotoxicity has been reported. Use with caution in patients with hepatic dysfunction and in those receiving other hepatotoxic drug. Superinfection Possible emergence and overgrowth of nonsusceptible bacteria or fungi. Discontinue drug and institute appropriate therapy if superinfection occurs. Selection and Use of Anti-infectives To reduce development of drug-resistant bacteria and maintain effectiveness of minocycline and other antibacterials, use only for treatment or prevention of infections proven or strongly suspected to be caused by susceptible bacteria. When selecting or modifying anti-infective therapy, use results of culture and in vitro susceptibility testing. In the absence of such data, consider local epidemiology and susceptibility patterns when selecting anti-infectives for empiric therapy. Because many strains of Acinetobacter, Bacteroides, Enterobacter, E. coli, Klebsiella, Shigella, S. pyogenes (group A -hemolytic streptococci), S. pneumoniae, enterococci, and ␣-hemolytic streptococci are resistant to tetracyclines (including minocycline), in vitro susceptibility tests should be performed if the drug is used for treatment of infections caused by these bacteria. Incision and drainage or other surgical procedures should be performed in conjunction with minocycline therapy when indicated. Specific Populations Pregnancy Category D. (See Fetal/Neonatal Morbidity under Cautions.) Should not be used in pregnant women unless, in the judgment of the clinician, it is essential for the welfare of the patient and benefits outweigh the risks. CDC and others state tetracyclines can be used when necessary for treatment of inhalational anthrax in pregnant women. Since adverse effects on developing teeth and bones are dose-related, CDC suggests the tetracyclines might be used for a short period (7– 14 days) before 6 months of gestation; some clinicians recommend periodic liver function testing if used in pregnant women. Lactation Distributed into milk; discontinue nursing or the drug. AAP states maternal use of tetracyclines usually is compatible with breast-feeding since absorption of the drugs by nursing infants is negligible. Pediatric Use Should not be used in children ⬍8 years of age unless benefits outweigh the risks. (See Dental and Bone Effects under Cautions.) Geriatric Use Insufficient experience in those ⱖ65 years of age to determine whether they respond differently than younger adults. Select dosage with caution because of age-related decreases in hepatic, renal, and/or cardiac function and concomitant disease and drug therapy; generally initiate therapy using the low end of the dosing range. Hepatic Impairment Use with caution. Renal Impairment High serum minocycline concentrations may result in azotemia, hyperphosphatemia, and acidosis. Excessive drug accumulation and possible liver toxicity may occur if usual dosage is used in patients with renal impairment. Dosage adjustment necessary in patients with impaired renal function. Serum minocycline concentrations should be monitored if therapy is prolonged. Because usual dosage of doxycycline can be used in patients with impaired renal function, it may be preferred when a tetracycline is indicated in a patient with impaired renal function. Common Adverse Effects GI effects (anorexia, nausea, vomiting, diarrhea); CNS effects (dizziness, vertigo); hypersensitivity reactions; dose-related BUN increases. Interactions Specific Drugs Drug Interaction Comments Antacids (aluminum-, calcium-, or magnesiumcontaining) Decreased minocycline absorption Administer antacids containing aluminum, calcium, or magnesium 1– 2 hours before or after minocycline short stand 46067 AHFS Essentials 24 ASHPI BATCH LEFT top of rh base of rh Minocycline (Systemic) Possible increased anticoagu- Monitor PT carefully; adjust lant effect; tetracyclines anticoagulant dosage as may impair utilization of needed prothrombin or decrease vitamin K production by intestinal bacteria Anticoagulants, oral Hormonal contraceptives Possible decreased effective- Use alternative nonhormonal ness of oral contraceptives contraceptives Iron-containing preparations Possible decreased absorption of minocycline Administer minocycline 2 hours before or 3 hours after an oral iron preparation Possible additive adverse nervous system effects; both minocycline and isotretinoin have been associated with pseudotumor cerebri Avoid use of isotretinoin shortly before, during, or after minocycline therapy Methoxyflurane Possible fatal nephrotoxicity Concomitant use not recommended Penicillins Possible antagonism Concomitant use not recommended Isotretinoin cap height base of text Parenteral Powder for Injection 20– 25C. Following reconstitution with sterile water for injection, solutions containing 20 mg/mL are stable for 24 hours at room temperature. Compatibility For information on systemic interactions resulting from concomitant use, see Interactions. Parenteral Do not mix with IV solutions containing calcium since precipitation can occur. Solution Compatibility Compatible Dextrose 5% in water Sodium chloride 0.9% Ringer’s injection Ringer’s injection, lactated Drug Compatibility ⬎Admixture Compatibility Incompatible Rifampin Pharmacokinetics ⬎Y-Site Compatibility Compatible Absorption Bioavailability 90– 100% absorbed from GI tract in fasting adults; peak serum concentrations attained within 1– 4 hours. Food GI absorption may be reduced up to 20% by food and/or milk; effect not considered clinically important. Divalent and trivalent cations, including aluminum, calcium, iron, magnesium, and zinc may decrease oral absorption as a result of chelation with the drug. Distribution Extent Widely distributed into body tissues and fluids. Only small amounts diffuse into CSF. Aztreonam Cyclophosphamide Docetaxel Etoposide phosphate Filgrastim Fludarabine phosphate Gemcitabine HCl Granisetron HCl Heparin sodium Hydrocortisone sodium succinate Linezolid Magnesium sulfate Melphalan HCl Perphenazine Potassium chloride Remifentanil HCl Sargramostim Teniposide Vinorelbine tartrate Vitamin B complex with C Incompatible Allopurinol sodium Amifostine Hydromorphone HCl Meperidine HCl Morphine sulfate Piperacillin sodium– tazobactam sodium Propofol Thiotepa Plasma Protein Binding 55– 88%. Actions and Spectrum Elimination Metabolism May be partially metabolized to ⱖ6 metabolites. Elimination Route 4– 19% of an oral or IV dose excreted in urine and 20– 34% excreted into feces as active drug. • • • • Half-life Adults with normal renal function: 11– 26 hours. • Special Populations Patients with impaired hepatic function: half-life 11– 16 hours. Patients with impaired renal function: half-life 12– 30 hours. Half-life up to 69 hours has been reported. • Stability Storage • Oral Capsules Capsules: 15– 30C. Protect from light, moisture, and excessive heat. Pellet-filled capsules: 20– 25C. Protect from light, moisture, and excessive heat. Tablets 20– 25C. Protect from light, moisture, and excessive heat. • Usually bacteriostatic, but may be bactericidal in high concentrations or against highly susceptible organisms. Inhibits protein synthesis in susceptible organisms by reversibly binding to 30S and 50S ribosomal subunits. The complete mechanisms by which tetracyclines reduce acne lesions have not been fully elucidated. The effects appear to result in part from the antibacterial activity of the drugs, but other mechanisms also are involved. Spectrum of activity includes many gram-positive and -negative bacteria and various other organisms (e.g., Rickettsia, Chlamydia, Mycoplasma, spirochetes). Inactive against fungi and viruses. Gram-positive aerobes and anaerobes: Active against Actinomyces israelii, Bacillus anthracis, Clostridium perfringens, C. tetani, Nocardia, Propionibacterium acnes, and some streptococci. Many strains of S. pyogenes and Enterococci are resistant. Gram-negative aerobes and anaerobes: Active against Bartonella bacilliformis, Brucella, Calymmatobacterium granulomatis, Francisella tularensis, Haemophilus ducreyi, H. influenzae, Neisseria gonorrhoeae, Vibrio cholerae, Y. enterocolitica, and Y. pestis. Many strains of Acinetobacter, E. aerogenes, E. coli, Klebsiella, and Shigella and nearly all strains of Proteus and Pseudomonas are resistant. Other organisms: Active against Rickettsia, Coxiella burnetii, Chlamydia psittaci, C. trachomatis, Helicobacter pylori, Mycoplasma hominis, M. pneumoniae, Ureoplasma urealyticum, Borrelia burgdorferi, B. recurrentis, Leptospira, Treponema pallidum, T. pertenue, and Mycobacterium fortuitum. Active against asexual erythrocytic forms of Plasmodium falciparum, but is not gametocidal and not active against exoerythrocytic forms of P. falciparum. Complete cross-resistance usually occurs between minocycline and other tetracyclines (demeclocycline, doxycycline, oxytetracycline, tetracycline). short stand 46067 AHFS Essentials ASHPI BATCH Minocycline (Systemic) RIGHT 25 top of rh base of rh cap height base of text Advice to Patients • • • • • • • • • • • Advise patients that antibacterials (including minocycline) should only be used to treat bacterial infections and not used to treat viral infections (e.g., the common cold). Importance of completing full course of therapy, even if feeling better after a few days. Advise patients that skipping doses or not completing the full course of therapy may decrease effectiveness and increase the likelihood that bacteria will develop resistance and will not be treatable with minocycline or other antibacterials in the future. Importance of drinking sufficient quantities of fluids when taking capsules or tablets to reduce the risk of esophageal irritation and ulceration. Advise patients that absorption of some minocycline preparations may be reduced when taken with foods, especially those containing calcium, and that pellet-filled capsules or tablets should be taken at least 1 hour before or 2 hours after meals and/or milk. Advise patients that adverse CNS effects (light-headedness, dizziness, vertigo) may occur and caution should be used when driving vehicles or operating hazardous machinery. Advise patients to avoid excessive sunlight or artificial UV light and to discontinue the drug at the first sign of skin erythema; consider use of sunscreen or sunblock. Advise patients that minocycline may decrease effectiveness of oral contraceptives and that alternative nonhormonal contraceptive measures should be used. Importance of women informing clinicians if they are or plan to become pregnant or plan to breast-feed. (See Fetal/Neonatal Morbidity under Cautions.) Importance of informing clinicians of existing or contemplated therapy, including prescription and OTC drugs. Importance of informing patients of other important precautionary information. (See Cautions.) Preparations Minocycline Hydrochloride Oral Capsules 50 mg (of minocycline)* 75 mg (of minocycline) 100 mg (of minocycline)* Capsules, pelletfilled Tablets, film coated 50 mg (of minocycline) 100 mg (of minocycline) 50 mg (of minocycline)* 75 mg (of minocycline) 100 mg (of minocycline)* Dynacin, Medicis Minocycline Hydrochloride Capsules, Global, Rambaxy, Teva, Watson Dynacin, Medicis Minocycline Hydrochloride Capsules, Global, Rambaxy, Teva, Watson Dynacin, Medicis Minocycline Hydrochloride Capsules, Global, Rambaxy, Teva, Watson Minocin, Wyeth Minocin, Wyeth Dynacin (with povidone), Medicis Minocycline Hydrochloride Tablets, Global, Rambaxy Myrac, Glades Dynacin (with povidone), Medicis Minocycline Hydrochloride Tablets, Global, Rambaxy Myrac, Glades Dynacin (with povidone), Medicis Minocycline Hydrochloride Tablets, Global, Rambaxy Myrac, Glades Parenteral For injection, for IV infusion only 100 mg (of minocycline) Minocin Intravenous, Wyeth *available generically †Use is not currently included in the labeling approved by the US Food and Drug Administration Selected Revisions August 2005, Copyright, May 2004, American Society of Health-System Pharmacists, Inc. short stand