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Propranolol

Medication beta blocker heart & blood pressure
Aka: Inderal
Brands seen in Singapore: Apo-Propranolol, Propanol, Inpanol
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
HealthHub: high blood pressure, angina, irregular heartbeat
When to take
Long-term use · HealthHub: not stopped suddenly after weeks
Take with
HealthHub: with or after food
Pros & cons
Pros
  • HealthHub lists bp, angina, migraine and tremor uses
  • 10 mg and 40 mg tablets registered in SG
  • US label: dose is individualised to response
Cons
  • Dizziness, cold hands and feet and tiredness are common
  • US label: contraindicated in bronchial asthma
  • HealthHub: it can mask low-blood-sugar warning signs
Sources
  1. HSA — Listing of Registered Therapeutic Products (data.gov.sg dataset d_767279312753558cbf19d48344577084), Forensicclassification column; all 5,511 rows cached at /tmp/hsa_all.json and filtered locally (not re-fetched), 27 Aug 2026 · read 2026-08-27
    what it says
    “APO-PROPRANOLOL TABLET 10 mg SIN00046P; APO-PROPRANOLOL 40 mg SIN00041P; PROPANOL 10 mg SIN00094P; INPANOL TABLETS 10 mg SIN00076P; PROPANOL 40 mg SIN01621P | PROPRANOLOL HCl | Prescription Only | C07AA05 — all 5 propranolol rows”
  2. MOH National Drug Formulary (Singapore) — APO-PROPRANOLOL TABLET 10 MG [SIN00046P], product information · read 2026-08-27
    what it says
    “PROPRANOLOL HCL - 10 MG … Registration Number SIN00046P … Forensic Classification PRESCRIPTION ONLY MEDICINES … Anatomical Therapeutic Chemical (ATC) code C07AA05 … Prescription-only Medicines with Exemptions for Supply without Prescription NA”
  3. HealthHub (MOH Singapore) — Propranolol, medication information leaflet · read 2026-08-27
    what it says
    “Propranolol belongs to a group of medications known as beta-blockers … High blood pressure … Irregular heartbeat … Angina … Migraine … You should take this medication with or after food”
  4. HealthHub (MOH Singapore) — Propranolol, precautions · read 2026-08-27
    what it says
    “You have asthma or other breathing problems – this medication may worsen or cause an asthma attack. You have pre-diabetes or diabetes - this medication may hide symptoms of low blood sugar such as fast heartbeat or tremors”
  5. HealthHub (MOH Singapore) — Propranolol, common side effects · read 2026-08-27
    what it says
    “Dizziness and lightheadedness … Coldness, numbness or tingling sensation of your fingers or toes … Feeling weak and tired, and that your heart beats slower … Shortness of breath”
  6. Propranolol Hydrochloride Tablets USP — US prescribing information (Endo USA, Inc., SPL set id 0d74bb04-8227-4afa-b523-ce1556150e07), Dosage and Administration: General · read 2026-08-27
    what it says
    “Because of the variable bioavailability of propranolol, the dose should be individualized based on response”
  7. Propranolol Hydrochloride Tablets USP — US prescribing information (Endo USA, Inc.), Dosage and Administration: hypertension and angina · read 2026-08-27
    what it says
    “The usual maintenance dosage is 120 mg to 240 mg per day. In some instances a dosage of 640 mg a day may be required … Angina Pectoris Total daily doses of 80 mg to 320 mg”
  8. Propranolol Hydrochloride Tablets USP — US prescribing information (Endo USA, Inc.), Dosage and Administration: myocardial infarction and migraine · read 2026-08-27
    what it says
    “The effectiveness and safety of daily dosages greater than 240 mg for prevention of cardiac mortality have not been established … Migraine … The usual effective dose range is 160 mg to 240 mg per day”
  9. Propranolol Hydrochloride Tablets USP — US prescribing information (Endo USA, Inc.), Contraindications · read 2026-08-27
    what it says
    “Propranolol is contraindicated in 1) cardiogenic shock; 2) sinus bradycardia and greater than first degree block; 3) bronchial asthma; and 4) in patients with known hypersensitivity to propranolol hydrochloride”
  10. Inderal LA (propranolol hydrochloride) extended-release capsules — US prescribing information, openFDA drug label record · read 2026-08-27
    what it says
    “brand_name: INDERAL LA … generic_name: PROPRANOLOL HYDROCHLORIDE … Inderal LA provides propranolol hydrochloride in a sustained-release capsule for administration once daily”
  11. NHS medicines A–Z — Propranolol, cautions with other medicines · read 2026-08-27
    what it says
    “other medicines for high blood pressure. The combination with propranolol can sometimes lower your blood pressure too much … other medicines for an irregular heartbeat such as amiodarone, digoxin or flecainide”
  12. NHS medicines A–Z — Propranolol, further cautions with other medicines · read 2026-08-27
    what it says
    “medicines to treat nose or sinus congestion, or other cold remedies … medicines for allergies, such as ephedrine, noradrenaline or adrenaline … NSAIDs, such as ibuprofen, diclofenac or naproxen – these medicines may increase your blood pressure”
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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.