Pharmacology Easy

Valsartan

Remember the name – VAL → valve, SARTAN → artery
VALSARTAN shuts the VALVE on the ARTERY's receptor, so angiotensin II arrives and finds the door locked.
Unlike an ACE inhibitor it leaves angiotensin II intact and blocks its docking site. No bradykinin builds up, which is why there is no dry cough.
Mnemonic: Another -SARTAN, still no cough
Same class as losartan. An ARB is the standard answer when an ACE inhibitor is right in principle but the patient cannot live with the cough.
The mechanism comic and the patient case for Valsartan are in the app: four panels that show what the drug does in the body, and a short patient story with the practice pearl that goes with it.

Side effects

Common: dizziness, high potassium, headache

Serious: kidney injury, harm in pregnancy

Typical dose

80–320 mg once daily

Start at 40–80 mg and double no faster than every two weeks. The heart failure target is 160 mg twice daily.

Check yourself

What is the usual reason to choose an ARB over an ACE inhibitor?

  1. The patient cannot tolerate the ACE-inhibitor cough
  2. ARBs lower blood pressure considerably more
  3. ARBs are safe to use in pregnancy
  4. ARBs have no effect on potassium
Show answer

A. The patient cannot tolerate the ACE-inhibitor cough

The two classes are close to equivalent on blood pressure and outcomes. Both raise potassium and both are forbidden in pregnancy — the cough really is the deciding difference.

See it, don't memorize it

The app has the mechanism comic and a patient case for Valsartan – plus the name link, the class mnemonic, pronunciation you can hear, and a self-check, for the top 100 drugs. One purchase, no subscription, no account.

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