LONDON — , according to experts evaluating the new approach.
This multidrug strategy — in which ultralow-dose triple combinations can be used as a starting treatment and four full-dose combinations can be used to treat resistant hypertension — has shown an impressive ability to lower blood pressure in several new studies.
But will it catch on as a routine treatment recommendation in current practice?
Studies of treatment strategies that involve an ultralow quarter dose of three drugs that lower blood pressure and then escalation to a half-dose triple combination and then to a full-dose triple combination, all given as a single pill, were presented at the European Society of Cardiology (ESC) Congress 2024. Another strategy presented involves a four-drug full-dose combination in patients with resistant hypertension.
Start With Low Doses of Three Drugs
The triple-combination pill contains telmisartan (an angiotensin blocker), amlodipine (a calcium channel blocker), and indapamide (a diuretic). The three medications are used at three doses: Quarter, half, and standard.
“The idea is to start treatment with a little bit of the three main drug classes instead of the full dose of one drug and then to increase the triple-combination doses as required to get to blood pressure goal,” said Anthony Rodgers, PhD, from the team at The George Institute for Global Health, Sydney, Australia, that is developing this triple-combination product.
“Using three different mechanisms right from the beginning covers all the bases and leads to improved blood pressure reduction while just using very small doses of each agent. This represents a completely new approach that could transform the management of hypertension,” he reported.
Single-pill triple-combination antihypertensive formulations exist already, but the component drugs are all at standard doses. Such combinations were designed to improve adherence in patients with hard-to-control blood pressure who need more than two full-dose medications, he explained.
“We are suggesting a completely different concept using much lower doses of the triple combination right from the beginning of treatment,” Dr. Rodgers explained. “Convenience and adherence will be an added advantage, but there’s more to it than that. It’s about combining the different mechanisms of three separate drug classes to get a better antihypertensive effect and being able to do this right from the start of treatment in patients with mildly elevated blood pressure, as well as those with higher levels.”
Proof-of-concept trials of this approach have been conducted, but no commercial low-dose triple-combination product has been available.
The George Institute is now developing such a product — through George Medicines, its commercial arm — with the aim of bringing the triple-combination pill to market in both high- and low-income countries. An approval submission has been filed in the United States.
Dr. Rodgers presented two studies that assessed the triple combination. One showed that the quarter dose reduced blood pressure significantly better than placebo in patients with mildly elevated blood pressure. The second showed that half and standard doses of the three medications were more effective at lowering blood pressure than three dual combinations at the same doses.