# George Institute calculator estimates blood pressure drop for drugs, built from nearly 500 trials

- Published: 2026-11-10 17:56 UTC
- Section: Life & Health › Medicine
- Tags: hypertension treatment, antihypertensive drugs, systolic blood pressure, randomized clinical trials, The George Institute for Global Health, meta-analysis, drug combinations
- URL: https://realtech.media/news/rt-06734ec5bd138d5c61702f7d_george_institute_calculator/

**Researchers at The George Institute built a calculator from nearly 500 randomized trials with over 100,000 participants. Its use in practice has yet to be tested in a clinical trial.**

![George Institute calculator estimates blood pressure drop for drugs, built from nearly 500 trials](https://realtech.media/media/2026/11/595e0737fc31c0f3.webp)
*science-et-vie.com*

Researchers at The George Institute for Global Health have created the Blood Pressure Treatment Efficacy Calculator, scitechdaily.com reports. The tool is based on data from nearly 500 randomized clinical trials with more than 100,000 participants. The work was published in The Lancet on August 30, 2025 [1]. The calculator lets physicians estimate how much different medications are expected to lower blood pressure [1].

## How the calculator works

The calculator averages treatment effects across hundreds of clinical trials. It also sorts therapies into low, moderate or high intensity groups by how much they reduce blood pressure, an approach already widely used for cholesterol-lowering treatment [1]. According to the published description, the thresholds are below 10 mmHg for low, 10–19 mmHg for moderate and 20 mmHg or more for high intensity.

A single antihypertensive drug, the usual first step, typically lowers systolic pressure by only 8–9 mmHg, while many patients need a drop of 15–30 mmHg to reach recommended targets [1]. Nelson Wang, cardiologist and Research Fellow at the institute, said that with dozens of drugs, several doses per drug and most patients needing two or more drugs, there are thousands of possible options and no easy way to judge their effectiveness [1].

## Why single readings are a poor guide

Wang said that adjusting treatment by individual readings is flawed. Blood pressure changes from moment to moment, day to day and by season, and these random fluctuations can be as large as the effect of treatment or larger. Imperfect measurement practice adds further uncertainty [1]. He also noted that each 1 mmHg reduction in systolic pressure lowers the risk of heart attack or stroke by two percent [1].

Anthony Rodgers, Senior Professorial Fellow at the institute, said the calculator challenges the traditional "start low, go slow, measure and judge" approach. In the new method, the physician specifies the required reduction, chooses a treatment plan based on the evidence and starts the patient on it ideally sooner rather than later [1].

The next step is a clinical trial in which patients will receive treatments chosen by the calculator according to the reduction they need [1]. Hypertension affects as many as 1.3 billion people and is linked to around ten million deaths a year. Fewer than one in five people with hypertension have it under control. Rodgers said that raising the share of controlled cases to 50% worldwide could save many millions of lives [1]. The calculator is available at www.bpmodel.org.

## Sources

1. [scitechdaily.com](https://scitechdaily.com/game-changing-new-tool-could-revolutionize-how-high-blood-pressure-is-treated/)
2. [science-et-vie.com](https://www.science-et-vie.com/corps-et-sante/grace-a-500-essais-cliniques-et-100-000-patients-des-chercheurs-ont-mis-au-point-un-outil-capable-de-choisir-le-bon-medicament-contre-lhypertension-212294.html)

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Source: RealTech, realtech.media — https://realtech.media/news/rt-06734ec5bd138d5c61702f7d_george_institute_calculator/