{"id":1151,"date":"2026-07-03T10:00:00","date_gmt":"2026-07-03T10:00:00","guid":{"rendered":"https:\/\/medycyna-gorska.pl\/?p=1151"},"modified":"2026-09-06T11:42:09","modified_gmt":"2026-09-06T11:42:09","slug":"expedition-antibiotics-first-line","status":"publish","type":"post","link":"https:\/\/medycyna-gorska.pl\/en\/expedition-antibiotics-first-line\/","title":{"rendered":"Expedition Antibiotics \u2014 4 First-Line Drugs"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>Antibiotics in the expedition medical kit<\/strong> are not a full shelf but 4 drugs with different spectra \u2014 chosen to cover 90% of infections encountered on expeditions in the Himalayas, Andes, or Africa. It&#8217;s not about &#8220;just-in-case treatment&#8221; but a rescue tool when the nearest doctor is 3 days&#8217; march away with no phone signal. In this article: 4 first-line antibiotics, their dosing, indications, interactions, and when NOT to use them.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At base camp most of my conversations about antibiotics were with the Sherpas, about dental infections they would carry for weeks before anyone found out. You had to ask directly whether they were taking anything, because they played their own complaints down. A medical kit works when somebody manages it; blister packs sitting in a rucksack settle nothing.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Four first-line antibiotics<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Azithromycin 500 mg<\/strong> \u2014 traveler&#8217;s diarrhea, respiratory tract infections, skin<\/li>\n<li><strong>Amoxicillin-clavulanate (Augmentin) 875\/125 mg<\/strong> \u2014 skin infections, sinuses, dental abscesses, wound infections<\/li>\n<li><strong>Ciprofloxacin 500 mg<\/strong> \u2014 urinary tract infections, some diarrheas (when azithromycin fails)<\/li>\n<li><strong>Metronidazole 500 mg<\/strong> \u2014 giardiasis, amoebae, anaerobes (abscesses, mixed infections)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Azithromycin \u2014 the expedition workhorse<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Traveler&#8217;s diarrhea<\/strong> (ETEC, Campylobacter, Shigella) \u2014 first choice, especially South Asia<\/li>\n<li><strong>Acute bacterial sinusitis<\/strong><\/li>\n<li><strong>Superficial skin infections<\/strong> (cellulitis, impetigo)<\/li>\n<li><strong>Bacterial bronchitis<\/strong>, mild community-acquired pneumonia<\/li>\n<li><strong>Lyme disease<\/strong> (when doxycycline unavailable or contraindicated)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Dosing<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Diarrhea<\/strong>: 500 mg once daily \u00d7 3 days (or single 1000 mg dose if urgent)<\/li>\n<li><strong>Respiratory<\/strong>: 500 mg once daily \u00d7 3\u20135 days<\/li>\n<li><strong>Skin<\/strong>: 500 mg once daily \u00d7 3 days<\/li>\n<li><strong>Contraindications<\/strong>: macrolide allergy, QT prolongation, myasthenia gravis<\/li>\n<li><strong>Interactions<\/strong>: warfarin (\u2191INR), digoxin (\u2191concentration), statins (rhabdomyolysis risk with simvastatin)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Amoxicillin-clavulanate \u2014 broad umbrella<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Wound infections<\/strong> (after falls or bites \u2014 dog, monkey, human)<\/li>\n<li><strong>Dental abscesses<\/strong> and periodontal infections<\/li>\n<li><strong>Sinusitis<\/strong> resistant to azithromycin<\/li>\n<li><strong>Community-acquired pneumonia<\/strong><\/li>\n<li><strong>Deep skin infections<\/strong> (cellulitis with fever, infected post-frostbite blisters)<\/li>\n<li><strong>Post-bite prophylaxis<\/strong> (drug of choice globally)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Dosing<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Standard<\/strong>: 875\/125 mg twice daily \u00d7 5\u201310 days<\/li>\n<li><strong>Severe infections<\/strong>: 1000\/125 mg three times daily<\/li>\n<li><strong>Post-bite prophylaxis<\/strong>: 875\/125 mg twice daily \u00d7 5\u20137 days<\/li>\n<li><strong>Contraindications<\/strong>: penicillin allergy, history of Augmentin-related jaundice<\/li>\n<li><strong>Side effects<\/strong>: diarrhea (10\u201320% \u2014 clavulanate), candidiasis, rash<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Ciprofloxacin \u2014 urinary tract specialist<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Urinary tract infections (UTI)<\/strong> \u2014 first choice on expeditions<\/li>\n<li><strong>Traveler&#8217;s diarrhea<\/strong> \u2014 alternative to azithromycin (Africa, Latin America)<\/li>\n<li><strong>Bacterial prostatitis<\/strong><\/li>\n<li><strong>External otitis<\/strong> (if solely oral route)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Dosing<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Uncomplicated UTI<\/strong>: 250 mg twice daily \u00d7 3 days<\/li>\n<li><strong>Complicated UTI or men<\/strong>: 500 mg twice daily \u00d7 7 days<\/li>\n<li><strong>Diarrhea<\/strong>: 500 mg twice daily \u00d7 3 days<\/li>\n<li><strong>Contraindications<\/strong>: pregnancy, children &lt;18 yrs (growth cartilage), myasthenia gravis, Achilles tendinopathy history<\/li>\n<li><strong>Photoneurotoxicity<\/strong>: avoid sun during treatment + 48 h after<\/li>\n<li><strong>Interactions<\/strong>: warfarin, digitalis glycosides, theophylline (significant)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Note: in South Asia <em>Campylobacter<\/em> resistance to fluoroquinolones is rising \u2014 we prefer azithromycin there. Ciprofloxacin still works well in Africa and Latin America for diarrhea.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Metronidazole \u2014 for parasites and anaerobes<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Giardiasis<\/strong> \u2014 prolonged diarrhea (&gt;7 days), bloating, &#8220;sulfur&#8221; belching, fatty stools<\/li>\n<li><strong>Amoebiasis<\/strong> (<em>Entamoeba histolytica<\/em>) \u2014 bloody diarrhea, abdominal pain, fever<\/li>\n<li><strong>Anaerobic bacteria<\/strong> \u2014 deep abscesses, bite wound infections<\/li>\n<li><strong>Trichomoniasis<\/strong>, bacterial vaginosis<\/li>\n<li><strong>Clostridioides difficile<\/strong> \u2014 post-antibiotic diarrhea (severe cases)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Dosing<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Giardiasis<\/strong>: 500 mg three times daily \u00d7 5\u20137 days<\/li>\n<li><strong>Amoebiasis<\/strong>: 750 mg three times daily \u00d7 7\u201310 days<\/li>\n<li><strong>Anaerobes + mixed infections<\/strong>: 500 mg three times daily \u00d7 7 days (combined with Augmentin or ciprofloxacin)<\/li>\n<li><strong>Contraindications<\/strong>: first trimester of pregnancy, allergy<\/li>\n<li><strong>Disulfiram reaction with alcohol<\/strong>: nausea, tachycardia, hypotension \u2014 avoid alcohol during and 48 h after<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">When NOT to give antibiotics<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Common cold<\/strong> \u2014 viral, antibiotic won&#8217;t help and disrupts flora<\/li>\n<li><strong>Mild diarrhea without fever\/blood<\/strong> \u2014 hydration suffices<\/li>\n<li><strong>Dry cough without fever\/dyspnea<\/strong> \u2014 usually viral bronchitis<\/li>\n<li><strong>Fever without localization<\/strong> \u2014 observe 24\u201348 h first, then possibly antibiotic<\/li>\n<li><strong>Minor abrasions and superficial wounds<\/strong> \u2014 hygiene + dressing suffices in healthy person<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Principle: <em>if uncertain whether bacterial, and you have access to care within 24 h \u2014 observe rather than give antibiotic<\/em>. Antibiotic overuse on expedition means no efficacy when really needed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended kit for a 2\u20133 week expedition<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Azithromycin 500 mg<\/strong> \u2014 6 tablets (2 diarrhea courses OR 1 respiratory course)<\/li>\n<li><strong>Augmentin 875\/125 mg<\/strong> \u2014 20 tablets (1 full 10-day course)<\/li>\n<li><strong>Ciprofloxacin 500 mg<\/strong> \u2014 14 tablets (reserve UTI + diarrhea)<\/li>\n<li><strong>Metronidazole 500 mg<\/strong> \u2014 21 tablets (7-day giardia\/amoeba course)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">All are <strong>prescription-only<\/strong>. An expedition medicine physician writes these without issue, justifying high-altitude trip. Don&#8217;t buy in destination country \u2014 counterfeit risk (especially Nepal, India, African nations) is real.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Frequently asked questions<\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list \">\n<div id=\"faq-q-abt-en-1\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">Why not doxycycline?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Doxycycline is an excellent drug but has key expedition limitations: photosensitivity (critical at high-altitude UV), contraindicated in pregnancy and children, interactions with calcium\/magnesium\/iron supplements. In the 4-drug kit above I don&#8217;t include it, but if planning malaria-endemic region with doxycycline as prophylaxis, it&#8217;s an additional drug.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-q-abt-en-2\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">What if I&#8217;m allergic to penicillins?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Skip Augmentin and substitute azithromycin (increased tablet count) + clindamycin (skin and dental infections) or third-generation cephalosporin (cefuroxime 500 mg twice daily) if allergy is not immediate (anaphylaxis). Note: ~5% of penicillin-allergic individuals also react to cephalosporins. For anaphylaxis history \u2014 choose azithromycin + clindamycin.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-q-abt-en-3\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">Can I give my antibiotic to a sick teammate?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Only if you are an expedition physician on the team with clinical decision-making authority. As non-medical personnel, you don&#8217;t have qualifications and don&#8217;t know the teammate&#8217;s history (allergies, pregnancy, chronic diseases, other medications). Universal rule: expedition antibiotics are for YOU. If teammate falls ill, contact expedition doctor via radio\/phone\/satellite, OR initiate evacuation.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-q-abt-en-4\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">How to store antibiotics on expedition?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Most antibiotics are stable -20\u00b0C to 40\u00b0C for brief periods. 2\u20133 week courses survive typical expedition conditions. Special notes: azithromycin and ciprofloxacin \u2014 prefer room temperatures, avoid freezing. Metronidazole \u2014 stable. Augmentin \u2014 most moisture- and heat-sensitive, keep in dry packaging inside backpack (not pocket against body). Always check expiration \u2014 don&#8217;t use expired drugs, especially tetracyclines (nephrotoxic past expiration).<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-q-abt-en-5\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">How long is the antibiotic course \u2014 shorten if improved?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Depends on drug. Azithromycin \u2014 complete 3 days regardless of improvement (long half-life \u2014 acts days after last dose). Augmentin \u2014 minimum 5 days for skin\/respiratory, 7\u201310 days for wound. Ciprofloxacin in UTI \u2014 minimum 3 days. Metronidazole in giardiasis \u2014 full 5\u20137 days or recurrence. Generally: DO NOT SHORTEN antibiotic courses, risking resistance selection and recurrence. Exception: if no improvement after 48 h \u2014 change drug or consult.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">References<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Riddle MS, Connor BA, Beeching NJ, et al. <em>Guidelines for the prevention and treatment of travelers&#8217; diarrhea<\/em>. J Travel Med. 2017;24(suppl_1):S57\u2013S74.<\/li>\n<li>CDC Yellow Book 2024 \u2014 Travelers&#8217; Diarrhea &#038; Infectious Diseases chapters.<\/li>\n<li>Stevens DL, et al. <em>Practice guidelines for the diagnosis and management of skin and soft tissue infections: 2014 update by the Infectious Diseases Society of America<\/em>. Clin Infect Dis. 2014;59(2):e10\u2013e52.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><em><strong>Disclaimer:<\/strong> All antibiotics are prescription-only. Before expedition consult the kit with an expedition or travel medicine physician.<\/em><\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>Four first-line antibiotics for expedition kit: azithromycin, Augmentin, ciprofloxacin, metronidazole. Dosing, indications, interactions, when NOT to use.<\/p>\n","protected":false},"author":2,"featured_media":761,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,4],"tags":[],"class_list":["post-1151","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aktualnosci","category-medycyna-gorska"],"_links":{"self":[{"href":"https:\/\/medycyna-gorska.pl\/en\/wp-json\/wp\/v2\/posts\/1151","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/medycyna-gorska.pl\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/medycyna-gorska.pl\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/medycyna-gorska.pl\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/medycyna-gorska.pl\/en\/wp-json\/wp\/v2\/comments?post=1151"}],"version-history":[{"count":3,"href":"https:\/\/medycyna-gorska.pl\/en\/wp-json\/wp\/v2\/posts\/1151\/revisions"}],"predecessor-version":[{"id":1376,"href":"https:\/\/medycyna-gorska.pl\/en\/wp-json\/wp\/v2\/posts\/1151\/revisions\/1376"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/medycyna-gorska.pl\/en\/wp-json\/wp\/v2\/media\/761"}],"wp:attachment":[{"href":"https:\/\/medycyna-gorska.pl\/en\/wp-json\/wp\/v2\/media?parent=1151"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/medycyna-gorska.pl\/en\/wp-json\/wp\/v2\/categories?post=1151"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/medycyna-gorska.pl\/en\/wp-json\/wp\/v2\/tags?post=1151"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}