← All medications

Olmesartan

Medication angiotensin receptor blocker heart & blood pressure
Aka: Olmetec
Brands seen in Singapore: Olmetec, Olmezen, Azoren
Not medical advice. Check with your doctor or pharmacist before you start, stop or change the timing of anything you take.
How to use
What it’s for
High blood pressure, alone or with other bp medicines
When to take
SG label: once daily · twice-daily offers no advantage
Take with
With or without food, per the SG olmetec label
Pros & cons
Pros
  • SG label: 20 mg once daily is the usual starting dose
  • Label: no initial dose change for older adults
  • Label: no initial change in marked renal impairment
Cons
  • SG label: to be stopped as soon as pregnancy is known
  • US label: NSAIDs can blunt it and strain the kidneys
  • No HealthHub leaflet — SG patient-facing info is thin
Sources
  1. HSA — Listing of Registered Therapeutic Products (data.gov.sg d_767279312753558cbf19d48344577084), Forensicclassification column; cached at /tmp/hsa_all.json and filtered locally, not re-fetched · read 2026-08-27
    what it says
    “Olmetec Tablet 20mg SIN13016P | Olmesartan medoxomil | Prescription Only | C09CA08; Olmetec Tablet 40mg SIN13018P; OLMEZEN 20MG SIN15530P; OLMEZEN 40MG SIN15528P; Azoren (amlodipine + olmesartan) SIN13964P, SIN13965P, SIN13966P — all 7 olmesartan rows Prescription Only”
  2. MOH National Drug Formulary (Singapore) — Olmetec Tablet 20mg [SIN13016P], product information · read 2026-08-27
    what it says
    “OLMESARTAN MEDOXOMIL - 20 MG … Forensic Classification PRESCRIPTION ONLY MEDICINES … Anatomical Therapeutic Chemical (ATC) code C09CA08 … Prescription-only Medicines with Exemptions for Supply without Prescription NA”
  3. MOH National Drug Formulary (Singapore) — Olmetec [SIN13016P], Indications and Usage · read 2026-08-27
    what it says
    “Olmesartan medoxomil is indicated for the treatment of hypertension. It may be used alone or in combination with other antihypertensive agents.”
  4. MOH National Drug Formulary (Singapore) — Olmetec [SIN13016P], Dosage and Administration · read 2026-08-27
    what it says
    “The usual recommended starting dose of olmesartan medoxomil is 20 mg once daily … the dose of olmesartan medoxomil may be increased to 40 mg. Doses above 40 mg do not appear to have greater effect.”
  5. MOH National Drug Formulary (Singapore) — Olmetec [SIN13016P], special populations and administration · read 2026-08-27
    what it says
    “No initial dosage adjustment is recommended for elderly patients, for patients with moderate to marked renal impairment (creatinine clearance <40 mL/min) or with moderate to marked hepatic dysfunction”
  6. MOH National Drug Formulary (Singapore) — Olmetec [SIN13016P], administration and volume depletion · read 2026-08-27
    what it says
    “Olmesartan medoxomil may be administered with or without food … For patients with possible depletion of intravascular volume … olmesartan medoxomil should be initiated under close medical supervision and consideration should be given to use of a lower starting dose”
  7. MOH National Drug Formulary (Singapore) — Olmetec [SIN13016P], Contraindications · read 2026-08-27
    what it says
    “Patients who become pregnant should discontinue the use of olmesartan medoxomil as soon as possible … The concomitant use of olmesartan medoxomil with aliskiren-containing products is contraindicated in patients with diabetes mellitus or renal impairment”
  8. US FDA label — Benicar (olmesartan medoxomil), Cosette Pharmaceuticals, effective 2023-07-12, section 7 Drug Interactions, via openFDA · read 2026-08-27
    what it says
    “Agents increasing potassium levels may lead to increase in serum potassium … NSAID use may lead to increased risk of renal impairment and loss of antihypertensive effect … Lithium: Increases in serum lithium concentrations and lithium toxicity”
  9. US FDA label — Benicar (olmesartan medoxomil), Cosette Pharmaceuticals, effective 2023-07-12, section 7 Drug Interactions (dual blockade and colesevelam), via openFDA · read 2026-08-27
    what it says
    “Dual inhibition of the renin-angiotensin system: Increased risk of renal impairment, hypotension, and hyperkalemia … Colesevelam hydrochloride: Consider administering olmesartan at least 4 hours before colesevelam hydrochloride dose”
  10. HealthHub (MOH Singapore) — Medications A–Z: no olmesartan leaflet exists; the URL pattern used for other SG medicines returns a 404 page · read 2026-08-27
    what it says
    “404”
Report a correction View as JSON

Updated 2026-08-29. Every line above traces to a numbered source. Kozen-X is not a medical device and does not give medical advice. It lists what published sources have written down — nothing more. A pair not listed is unrecorded, not cleared. Before you start, stop or re-time anything, talk to your doctor or pharmacist.