The US Food and Drug Administration approved AstraZeneca's aldosterone synthase inhibitor baxdrostat, sold as Baxfendy, in May for adults whose blood pressure stays high on other medicines. We could not confirm a new clinical announcement dated November 8, so this piece reviews the published trial data and the label safety warnings.
Baxdrostat is a once-daily pill that works by reducing production of aldosterone, a hormone that raises blood pressure. According to label information relayed by Drugs.com, it was approved in the United States in May 2026 as the first drug in its class, for use alongside other antihypertensives in adults whose pressure is not adequately controlled.
광고 문의 · 300×250In an AstraZeneca press release dated August 30, 2025, lead investigator Bryan Williams said the data show aldosterone plays a greater role in hard-to-control hypertension than previously recognised. That is a company-supplied investigator comment, not an independent assessment.
What the trial showed
The core evidence is the phase 3 BaxHTN trial. According to the company and Drugs.com, 796 patients were randomised in equal numbers to 1 mg, 2 mg or placebo for 12 weeks, with results presented at the European Society of Cardiology congress and published in the New England Journal of Medicine. Systolic pressure fell 15.7 mmHg on 2 mg, 14.5 on 1 mg and 5.8 on placebo.
After subtracting the placebo effect, the gap was 9.8 mmHg for 2 mg and 8.7 for 1 mg, both statistically significant (p<0.001). The company said results were consistent in the uncontrolled and treatment-resistant subgroups. These figures come mainly from a company release and a drug-information site; we did not check them against the full paper.
Safety and open questions
Potassium and sodium matter as much as efficacy. In label data summarised by Drugs.com, hyperkalaemia was reported in 6.6% on 1 mg and 10.2% on 2 mg, and hyponatraemia in 2.1% and 3.2%; both call for testing before treatment and periodic monitoring. Patients aged 65 or older, or with diabetes or chronic kidney disease, or taking drugs that raise potassium, need closer checks.
Pricing and launch timing are not confirmed in the material we reviewed, and approval status in South Korea and other countries is likewise unconfirmed. Patients should talk to their own doctor before starting or switching any blood pressure medicine; this article is not treatment advice.