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Losartan

Cosaar, Losartan +pharma, Losartan Aliud, Losartan G.L. · ATC code C09CA01

Also known as: Losartan Potassium · Brand names: Cosaar, Losartan +pharma, Losartan Aliud, Losartan G.L., Losartan Genericon, Losartan Krka, Losartan Ratiopharm, Lorzaar Protect, Lorzaar Start, Losar, Cozaar, Eklips, Hilos, Lorkar, Losanew-100-Mg-Film-Kapli-Tb …

Key facts
Active substance
Losartan
ATC code
C09CA01
Authorisation
authorised nationally; no central EU authorisation
Information as of
2026-10-27

Boxed warning

When pregnancy is detected, discontinue losartan potassium as soon as possible. Drugs that act directly on the renin-angiotensin system can cause injury and death to the developing fetus [see Warnings and Precautions (5.1)].

Key facts

Losartan is an angiotensin II receptor blocker. Per the US label, it is used for hypertension, hypertension with left ventricular hypertrophy and nephropathy in type 2 diabetes.

What it is used for

  • Hypertension in adults and pediatric patients 6 years and older
  • Hypertensive patients with left ventricular hypertrophy
  • Nephropathy in type 2 diabetic patients

Dosing

  • Adult hypertension: usually 50 mg once daily, maximum 100 mg once daily; 25 mg if intravascular depletion is possible (e.g. diuretics)
  • Pediatric hypertension (6 years and older): 0.7 mg per kg once daily (up to 50 mg); not with eGFR less than 30 mL/min/1.73 m²
  • Left ventricular hypertrophy: 50 mg, add hydrochlorothiazide 12.5 mg and/or increase to 100 mg
  • Diabetic nephropathy: 50 mg once daily, increased to 100 mg based on blood pressure
  • Mild-to-moderate hepatic impairment: starting dose 25 mg

Contraindications

  • Hypersensitivity to any component
  • Coadministration with aliskiren in patients with diabetes

Important warnings

  • Boxed warning: fetal toxicity; discontinue as soon as possible when pregnancy is detected
  • Symptomatic hypotension in volume- or salt-depleted patients
  • Renal function deterioration may occur
  • Hyperkalemia with drugs that raise serum potassium

Side effects

  • More common than placebo: dizziness, upper respiratory infection, nasal congestion, back pain
  • Less common: anemia, depression, somnolence, headache, sleep disorders, migraine
  • Discontinuation due to adverse events in 2.3% of patients

Interactions

  • Drugs increasing serum potassium: hyperkalemia; monitor potassium
  • Lithium: increased lithium levels and toxicity
  • NSAIDs including COX-2 inhibitors: see the full prescribing information

Pregnancy and breastfeeding

  • Use in the second and third trimesters can cause fetal injury and death; discontinue as soon as possible when pregnancy is detected

Summary of the official product information, written with AI (Claude, Anthropic) on 2026-10-28. Every number was checked automatically against the original text. Not reviewed by a physician – the full official text is authoritative.

Full official text →

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For patients

Patient information (US)

Patient information (US) →

Authorisation and brand names by country

Medicines with exactly this active-substance composition, as listed in the national registers – alphabetical and without ranking. Whether a product is currently available is not shown here.

Austria

  • CosaarOrganonhealthcare Gmbh · 1 register entry
  • Losartan +pharma+pharma Arzneimittel Gmbh · 1 register entry
  • Losartan AliudStada Arzneimittel Ges.M.B.H · 2 register entries
  • Losartan G.L.G.L. Pharma Gmbh · 1 register entry
  • Losartan GenericonGenericon Pharma Gesellschaft M.B.H. · 1 register entry
  • Losartan KrkaKrka, D.D., Novo Mesto · 1 register entry
  • Losartan RatiopharmTeva B.V · 1 register entry

Source: EMA – Article 57 product data (EU/EEA), as of 2026-10-28

Germany

  • Lorzaar ProtectOrganonhealthcare Gmbh · 1 register entry
  • Lorzaar StartOrganonhealthcare Gmbh · 1 register entry
  • LosarDenk Pharma Gmbh & Co. Kg, Teva Gmbh · 2 register entries
  • Losartan1 A Pharma Gmbh, Axcount Generika Gmbh, Puren Pharma Gmbh & Co. Kg, Ipca Productos Farmaceuticos Unipessoal Lda, Pharmaclan S.R.O., Ratiopharm Gmbh, Tad Pharma Gmbh, Medical Valley Invest Ab, Heumann Pharma Gmbh & Co. Generica Kg, Amarox Pharma Gmbh, 123 Acurae Pharma Gmbh, Hexal Ag, Stadapharm Gmbh, Dexcel Pharma Gmbh, Abz-Pharma Gmbh, Aliud Pharma Gmbh · 17 register entries

Source: EMA – Article 57 product data (EU/EEA), as of 2026-10-28

Turkey

  • CozaarORGANON TURKEY İLAÇLARI LİMİTED ŞİRKETİ · 2 register entries
  • EklipsSANOVEL İLAÇ SAN. VE TİC. A.Ş. · 6 register entries
  • HilosNOBEL İLAÇ SAN. VE TİC. A.Ş. · 2 register entries
  • LorkarULKAR İLAÇ PAZARLAMA LTD. ŞTİ. · 2 register entries
  • Losanew-100-Mg-Film-Kapli-TbCELTİS İLAÇ SAN. VE TİC. A.Ş. · 2 register entries
  • Losanew-50-Mg-Film-Kapli-TbCELTİS İLAÇ SAN. VE TİC. A.Ş. · 2 register entries
  • LosartilDROGSAN İLAÇLARI SAN. VE TİC. A.Ş. · 2 register entries
  • LosaryumRECORDATİ İLAÇ SAN. VE TİC. A.Ş. · 2 register entries
  • LoxibinBİOFARMA İLAÇ SAN. VE TİC. A.Ş. · 2 register entries
  • SarilenALİ RAİF İLAÇ SAN. A.Ş. · 3 register entries

Source: TİTCK – Ruhsatlı Beşeri Tıbbi Ürünler Listesi, as of 2026-10-16

USA

  • Losortan Potassium3 register entries

Source: U.S. FDA – Drug labels (openFDA/DailyMed), as of 2026-10-28

Brand names in 27 more European countries
Belgium
Cozaar, Loortan, Losartan Ab, Losartan Eg, Losartan Eurogenerics, Losartan Krka, Losartan Teva, Losartan Viatris
Bulgaria
Лозап, Лориста, Лосарлен, Лотар
Croatia
Cozaar, Lorista, Losartic, Lotar
Cyprus
Cozaar, Losadrac, Losar, Losartan Aurobindo, Losartan Krka, Losartan Potassium Jubilant
Czechia
Lorista, Lozap, Sangona
Denmark
Ancozan, Cozaar, Losarstad, Losartan, Losartankalium
Estonia
Lorista, Lozap, Sartens
Finland
Cozaar, Losarion, Losartan Krka, Losartan Medical Valley, Losartan Orion, Losartan Stada, Losatrix
France
Cozaar, Losartan Accord, Losartan Arrow Lab, Losartan Biogaran, Losartan Cristers, Losartan Eg, Losartan Evolugen, Losartan Krka, Losartan Sandoz, Losartan Teva, Losartan Viatris, Losartan Zentiva Lab, Losartan Zydus
Greece
Cozaar, Cozapert, Golasan, Loben, Lorfast, Losadrac, Losalet, Losarb, Lozanel, Lozatan, Lyosan, Mozartan, Ozarium, Press-Down, Proelsartan, Rabolan
Hungary
Arbartan, Cozaar, Lavestra, Losartan Krka, Portiron, Prelow
Iceland
Cozaar, Losartan Medical Valley, Losartan Stada, Losartankalium Krka, Losatrix, Presmin
Ireland
Cozaar, Losartan Clonmel, Losartan Krka, Losartan Potassium Accord Healthcare Ireland, Losartan Potassium Pinewood Laboratories, Losartan Rowa, Losartan Teva
Italy
Lastan, Lortaan, Losaprex, Losartan Ahcl, Losartan Aurobindo, Losartan Doc, Losartan Eg, Losartan Krka, Losartan Laboratori Alter, Losartan Mylan Generics, Losartan Pensa, Losartan Pharmaclan, Losartan Sandoz, Losartan Tecnigen, Losartan Teva, Losartan Zentiva, Neo-Lotan, Precten
Latvia
Lorista
Lithuania
Lorista, Losartan Ingen Pharma
Luxembourg
Cozaar, Loortan, Losartan Eg, Losartan Eurogenerics
Malta
Losartan Potassium Aurobindo Pharma (Malta)
Netherlands
Cozaar, Entrizen, Kaliumlosartan Sandoz, Losartan Kalium Hcs, Losartan Kalium Jubilant, Losartan Kalium Pharmaclan, Losartan Potassium Aurobindo, Losartan Potassium Axcount, Losartankalium Accord, Losartankalium Amarox, Losartankalium Mylan, Losartankalium Pch, Losartankalium Xiromed
Norway
Cozaar, Losartan Krka, Losartan Medical Valley, Losartan Stada, Losartan Teva
Poland
Cozaar, Lorista, Losacor, Losartan Krka, Lozap, Presartan, Xartan
Portugal
Cozaar, Losartan Almus, Losartan Alter, Losartan Aurovitas, Losartan Azevedos, Losartan Basi, Losartan Beapy Bluemed Unipessoal Lda, Losartan Bluepharma, Losartan Ciclum, Losartan Farmoz, Losartan Generis, Losartan Gp, Losartan Ipca, Losartan Jaba, Losartan Krka, Losartan Labesfal, Losartan Mylan, Losartan Pharmakern, Losartan Ratiopharm, Losartan Rominguer Bluemed Unipessoal Lda, Losartan Sandoz, Losartan Tecnigen, Losartan Tecnimede, Losartan Tetrafarma, Losartan Teva, Losartan Tiasar, Losartan Tolife, Losartan Vitória, Losartan Wynn, Losartan Zentiva, Lostad
Romania
Lorista, Losartan Arena, Talosan
Slovakia
Lorista, Losartan Stada, Losartan Zentiva
Slovenia
Lorista
Spain
Cozaar, Losartan Kern Pharma, Losartan Mabo, Losartan Sun, Losartan Tarbis, Losartán Almus, Losartán Alter, Losartán Aurovitas, Losartán Cinfa, Losartán Inicio Cinfa, Losartán Inicio Pensa, Losartán Krka, Losartán Normon, Losartán Pensa, Losartán Pharma Combix, Losartán Pharmaclan, Losartán Sandoz, Losartán Silanes, Losartán Stadafarma, Losartán Tarbis Farma, Losartán Tecnigen, Losartán Teva-Ratio, Losartán Teva-Ratiopharm, Losartán Uxa, Losartán Vegal, Losartán Viatris, Losartán Vir
Sweden
Cozaar, Losartan Jubilant, Losartan Krka, Losartan Medical Valley, Losartan Orion, Losartan Sandoz, Losartan Stada, Losartan Teva, Losartan Viatris

EMA – Article 57 product data (EU/EEA), 2026-10-28

Medelix receives no money from pharmaceutical companies. Brand names are listed alphabetically and without ranking.

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Sources

  1. U.S. Food and Drug Administration. Losartan Potassium (Zydus Pharmaceuticals USA Inc.) – Prescribing Information, 2026-07-20. DailyMed (NLM), 2026-10-27. https://dailymed.nlm.nih.gov/dailymed/lookup.cfm?setid=3233c707-70b6-4c29-8210-913eeb2a38ed
  2. EMA – Article 57 product data (EU/EEA), 2026-10-28. https://www.ema.europa.eu/en/human-regulatory-overview/post-authorisation/data-medicines-iso-idmp-standards-post-authorisation/public-data-article-57-database
  3. EMA – Article 57 product data (EU/EEA), 2026-10-28. https://www.ema.europa.eu/en/human-regulatory-overview/post-authorisation/data-medicines-iso-idmp-standards-post-authorisation/public-data-article-57-database
  4. TİTCK – Ruhsatlı Beşeri Tıbbi Ürünler Listesi, 2026-10-16. https://www.titck.gov.tr/dinamikmodul/85
  5. U.S. FDA – Drug labels (openFDA/DailyMed), 2026-10-28. https://dailymed.nlm.nih.gov/dailymed/

Editorial: Medelix editorial team · last updated 2026-10-27 · How these pages are made · Report an error

Source: U.S. Food and Drug Administration (FDA), prescribing information, via DailyMed (NLM); public domain. Not advertising, not a treatment recommendation. For questions about your own treatment, ask your doctor or pharmacist.