What to Know About Hypertension Medication in Cambodia

2. Angiotensin Receptor Blockers (ARBs)

Losartan, valsartan, and telmisartan are ARBs that work similarly to ACE inhibitors but are less likely to cause a cough. They are a good alternative for patients who cannot tolerate ACE inhibitors and are available at most registered pharmacies in Phnom Penh.

3. Calcium Channel Blockers (CCBs)

Amlodipine is the most prescribed calcium channel blocker in Cambodia and is included on the national essential medicines list. It relaxes the muscular walls of arteries and is particularly effective in older patients or those of Southeast Asian descent. Ankle swelling is a potential side effect that should be reported to your healthcare provider.

4. Diuretics (Water Tablets)

Hydrochlorothiazide and furosemide help the kidneys remove excess sodium and water, lowering blood volume and pressure. They are inexpensive and commonly used as add-on therapy when a single medication is not enough. Patients should ensure adequate fluid intake and be aware that potassium levels may need monitoring.

5. Beta-Blockers

Atenolol, metoprolol, and bisoprolol slow the heart rate and reduce the force of the heart's contractions, lowering blood pressure. They are particularly recommended for patients who have experienced a heart attack or have heart failure alongside hypertension.

Important: Always Take Prescription Medication as Directed

Never self-prescribe or purchase antihypertensive medication without a doctor's consultation. Stopping medication abruptly can cause a dangerous rebound rise in blood pressure. If you experience side effects, speak to a pharmacist or doctor before making any changes to your regimen.
 

How to Take Hypertension Medication Safely

Consistency is the most important principle of hypertension management. Blood pressure medication works best when taken at the same time every day, even when you feel well. Many patients make the mistake of stopping their medication once readings improve — this is dangerous, as the medication is what is keeping readings in the safe range, not a cure.

The following practical steps will help you get the most from your medication:

• Take your medicine at the same time each day — many people find linking it to a routine (morning tea, breakfast, or brushing teeth) helps with adherence.
• Never skip a dose. If you miss one, take it as soon as you remember, unless it is nearly time for your next dose — in that case, skip the missed dose.
• Do not double up on doses to compensate for a missed one.
• Keep a stock of at least two weeks of medication so that you are never at risk of running out.
• Store medicines in a cool, dry place — Cambodia's heat and humidity can degrade certain medications if stored improperly.
• Attend regular follow-up appointments so your doctor can assess whether your current prescription is still optimal.

Lifestyle Changes That Support Your Medication

Medication alone is rarely enough. Doctors universally recommend combining antihypertensive treatment with lifestyle modifications that address the underlying drivers of high blood pressure. In the Cambodian context, the following are particularly relevant:

• Reduce sodium intake: Fish sauce, soy sauce, prohok (fermented fish paste), and instant noodles are staple ingredients in Cambodian cooking but are extremely high in sodium. Aim to use less sauce at the table and choose lower-sodium alternatives where available.
• Exercise regularly: Even 30 minutes of brisk walking five days a week can meaningfully lower blood pressure. Early morning walks along Sisowath Quay or in local parks are a popular and practical option for Phnom Penh residents.
• Limit alcohol: Excessive alcohol raises blood pressure and interferes with medication effectiveness. If you drink, keep it moderate.
• Quit smoking: Nicotine causes an immediate, temporary spike in blood pressure and accelerates artery damage over time.
• Manage stress: Chronic stress contributes to sustained elevated blood pressure. Practices such as meditation, adequate sleep, and social connection all play a role.
• Monitor at home: An affordable upper-arm blood pressure monitor allows you to track readings between appointments. Share your log with your doctor at each visit.

Where to Get Hypertension Medication in Cambodia

Antihypertensive medicines can be obtained from:

• Public hospitals and health centres: Government health facilities dispense essential medicines, often at subsidised prices or free of charge for eligible patients. Availability can be inconsistent outside major cities.
• Private pharmacies in Phnom Penh: A large number of registered private pharmacies in Phnom Penh stock the full range of antihypertensive medications. Quality and pricing vary — always purchase from pharmacies licensed by the Ministry of Health.

• OSOTCAM partner pharmacies: OSOTCAM connects you with MoH-verified partner pharmacies and delivers your prescribed medication directly to your home in Phnom Penh. All partner pharmacies are vetted for licensing, storage standards, and medicine authenticity — giving you confidence that what you receive is genuine.

   

Why Verified Medicines Matter

Counterfeit and substandard medicines are a genuine risk in some parts of Southeast Asia. When you purchase hypertension medication through OSOTCAM's MoH-verified partner network, you can be confident that every product meets Cambodia's regulatory standards for safety and authenticity.