The Truth About Potassium and Blood Pressure Meds

What Big Pharma Doesn’t Want You to Know

One of the most common questions I get is: “Can I take potassium if I’m on blood pressure medication—like an ACE inhibitor or an ARB?” Most people have been told not to, or to be “careful,” without much explanation. But when you look at the science—and what happens in real life—you realize we’ve been misled.

So I decided to put it to the test. Not on a lab rat. On myself.

I got a prescription for lisinopril, the most commonly prescribed ACE inhibitor in the U.S., and started at 10mg. Over four days, I increased the dose up to 40mg—while also taking 4,000mg of potassium each day from a mix of food and supplements. I monitored everything: how I felt, my blood pressure, and eventually, my lab results. This self-experiment also helped me explore natural alternatives to ACE inhibitors for controlling blood pressure safely.

What happened? Absolutely nothing alarming.

My blood pressure held steady at 118/74, right in the healthy range. I didn’t feel dizzy or weak. My blood potassium levels came back at 4.5, well within the normal range. And my ACE levels were undetectable, proving the medication was active and working, without causing concerning lisinopril side effects.

So despite what most doctors and health sites suggest, combining a high potassium intake with a common blood pressure medication didn’t send my potassium through the roof. It didn’t even nudge it.

And this isn’t just me.

The research matches my results. In one study, patients taking ACE inhibitors or ARBs increased their potassium intake from around 3,000mg to 5,000mg per day through food—very close to the RDA for potassium. Their blood potassium levels barely moved. Another study gave patients 1,600mg of potassium supplements with lisinopril—again, no spike in potassium.

So why are we told to avoid potassium if we’re on these medications?

Because if potassium worked—and clearly, it does—you might not need the meds. And that’s not a message drug companies want spreading. You can’t patent potassium. You can’t build billion-dollar industries off leafy greens and lentils. But you can off medications that people are told to take forever.

Most people never hit the recommended 4,700–5,000mg of potassium per day. Not because it’s impossible—but because they’re actively discouraged from trying. Meanwhile, expert guidelines say clearly: doctors should encourage dietary potassium even when prescribing meds. But many patients never hear that part.

Let me be clear:

I’m not telling anyone to stop their meds. But you should have a conversation with your doctor. Ask if there’s any real reason you can’t hit your potassium target through food. If that’s tough, ask about supplementation. And if your blood pressure is moderate—not dangerously high—talk about whether a temporary break from meds could make sense as you make dietary changes. This is called a “drug holiday,” and it’s something I’ve helped many of my patients explore safely as they try to wean off blood pressure medication responsibly.

Of course, every body is different. This isn’t one-size-fits-all. But the point is: you have options. You have a right to understand them. And you have a right to question a system that profits from keeping you sick instead of supporting what could help you heal.

If you want to reverse hypertension naturally, potassium is one of the most powerful and overlooked tools we have. It plays a huge role in holistic heart health, blood pressure control, and long-term longevity.

Potassium is powerful. It’s natural. It’s safe when used responsibly. And it’s being ignored—not because it doesn’t work, but because it doesn’t make anyone rich.

Ready to try doctor-formulated, high-dose potassium?

Dr. Dave Clayton