{"id":1151,"date":"2026-07-03T10:00:00","date_gmt":"2026-07-03T10:00:00","guid":{"rendered":"https:\/\/medycyna-gorska.pl\/?p=1151"},"modified":"2026-07-03T10:00:00","modified_gmt":"2026-07-03T10:00:00","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<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>IDSA Clinical Practice Guidelines for Skin and Soft Tissue Infections, 2024.<\/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],"tags":[],"class_list":["post-1151","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aktualnosci"],"_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":1,"href":"https:\/\/medycyna-gorska.pl\/en\/wp-json\/wp\/v2\/posts\/1151\/revisions"}],"predecessor-version":[{"id":1297,"href":"https:\/\/medycyna-gorska.pl\/en\/wp-json\/wp\/v2\/posts\/1151\/revisions\/1297"}],"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}]}}