Oxy-Powder Review: What the Research Really Says About This Magnesium-Ozone Colon Cleanse (2026 Update)

Backed by evidence-based research, updated with 2025–2026 clinical data.

Let’s face it: there are some scams out there in the world of supplements. A heated topic right now is colon cleansing and cleanses in general. Coming from 25-plus years of scientific background and clinical practice has helped me keep an eye on what is real and what is not in the world of cleanses and supplements.

I decided to do an Oxy-Powder review because there are a ton of wildly differing opinions about this “colon cleanse” supplement on the market today. When it comes to an Oxy-Powder review or any product review, it’s only fair to actually try the product and break down the ingredients into their actual health benefits rather than take a biased opinion from what so-called experts are saying or what the public is saying. In other words, don’t knock it until you try it, if it’s safe and possibly effective. I’m going to review the ingredients and the research behind them, then give you my own personal experience with Global Healing Oxy-Powder — plus what’s changed in the research since I first wrote this post.

This post contains affiliate links. Read more on my disclosure page. I only recommend products I know and trust for myself and my family.

Heidi Moretti, MS, RD, CLT — Registered Dietitian and Certified LEAP Therapist with 25+ years of clinical experience in functional nutrition and gut health.

What Exactly Is Oxy-Powder?

There are two active ingredients and two capsule ingredients in Oxy-Powder from Global Healing: ozonated magnesium oxide and citric acid are the active ingredients. The magnesium is delivered as ozonated magnesium oxides, and the citric acid is naturally derived.

The capsule itself is made from cellulose fiber and organic gum acacia — both natural fibers. Oxy-Powder used to contain germanium powder, but it no longer does.

This supplement comes in capsule form, with 120 capsules per bottle. The delivery form matters here, because tablet forms of magnesium are often poorly absorbed, while capsule forms tend to absorb more readily based on magnesium bioavailability research and absorption comparison studies.

Worth noting: effervescent magnesium formulations still out-absorb capsule forms if maximizing milligrams delivered per dose is your main goal.

Claims of Oxy-Powder

The Global Healing website suggests that Oxy-Powder cleanses and detoxifies, optimizes digestive health, reduces bloating and occasional constipation, and supports overall gut health.

Before I tried Oxy-Powder, I read a lot of reviews about the product — both on the Global Healing site and on other popular vendor platforms. The Global Healing site has thousands of positive customer reviews.

Many people say this supplement works better than laxatives, offsets the constipating side effects of medications, and doesn’t come with the cramping and urgency that traditional laxatives can cause.

Oxy-Powder colon cleanse reviews also frequently mention it helping reduce constipation gently and effectively, sometimes as part of a broader diet cleanse. Others report Oxy-Powder helping with yeast overgrowth symptoms, though I want to be clear that this specific claim doesn’t have direct clinical trial support — it’s anecdotal.

Do the Ingredients Support the Claims?

Let’s break down the ingredients: ozone in the form of ozonated magnesium oxide powder, plus citric acid.

Ozone

Ozone is simply a gas made of three oxygen molecules. According to the Journal of Natural Science, Biology, and Medicine, ozone used in medical applications appears safe in studied contexts and may inactivate harmful bacteria, viruses, fungi, yeast, and protozoa in the gut according to research on ozone’s antimicrobial gut effects.

Ozone may also support intestinal health by increasing villous height and mucosal DNA content, according to early research on ozone and intestinal wall integrity.

By causing minor oxidative stress, ozone appears to activate the body’s own antioxidant systems — a “hormetic” effect, where a small stressor triggers a disproportionately protective response. These systems include:

• NRF2
• Superoxide dismutase
• Glutathione transferase
• Catalase
• NADPH

Newer research continues to support this hormetic mechanism. A 2025 pharmacology review described ozone’s ability to activate Nrf2 antioxidant pathways as central to its anti-aging and anti-inflammatory potential, while cautioning that it should only be used under trained clinical supervision given the risk of misuse in a 2025 review on ozone’s Nrf2-mediated effects. A separate 2025 clinical study protocol is now investigating whether rectal ozone insufflation can restore gut microbial balance in patients with treatment-related pelvic toxicity, building on the same Nrf2 activation and NF-κB inhibition mechanisms described in a 2025 gut microbiota ozone insufflation protocol.

Uses under active study include rheumatoid arthritis, chemotherapy-induced peripheral neuropathy, wound healing, and diabetes, among others. That said, it’s important to separate routes of exposure: the FDA’s long-standing position — reaffirmed by a July 2025 warning letter against an IV/autohemotherapy ozone device manufacturer — is specifically about ozone gas delivered by injection or inhalation, which the agency classifies as a toxic gas with no approved medical use under the FDA’s ozone device regulations. That’s a meaningfully different risk profile than a small amount of ozone bound into a magnesium oxide capsule and swallowed. As always with natural treatments, only limited human studies exist, and more research is needed before making strong health claims either way. Oxy-Powder colon cleanse is no exception.

Magnesium Oxide Powder

It’s no secret that most Americans run low in magnesium — a combination of processed food intake, depleted soils, and medications that deplete the body’s magnesium stores.

The magnesium oxide powder in Oxy-Powder is likely better absorbed than the magnesium tablets you’ll typically find at grocery stores or retail pharmacies.

Magnesium’s health benefits are vast, with over 300 functions in the body. Here are a few relevant ones.

Bone Density

Magnesium helps build healthy bone structure. In a clinical study of 120 volunteers, magnesium oxide supplementation in healthy girls improved bone density in a bone density trial in adolescent girls.

Energy and Performance

Magnesium plays a role in mitochondrial energy production, so it makes sense the body benefits from supplementation, especially if you’re deficient (most people are). A 12-week clinical trial in elderly women found magnesium oxide improved physical performance compared to placebo in a trial on magnesium and physical performance in older adults.

Supports the Microbiome

Magnesium deficiency impairs gut microbiome health and digestive tract function according to research on magnesium status and the gut microbiome, and this deficiency may contribute to increased anxiety and low mood.

Some case reports of magnesium supplementation have documented rapid improvement in depressive symptoms in case reports on magnesium and mood.

Reduces Constipation

Magnesium oxide supplementation reduces constipation symptoms by improving stool consistency and shortening the interval between bowel movements in a clinical study on magnesium oxide and chronic constipation.

What’s new since I first wrote this post: a 2025 real-world comparison study out of Japan found that while magnesium oxide reliably improves chronic constipation, a newer prescription option (elobixibat) outperformed it specifically on rectal sensitivity and colonic transit time in a 2025 head-to-head study on magnesium oxide versus elobixibat. That doesn’t make magnesium oxide ineffective — it’s still a legitimate, well-studied option — but it’s a useful data point if you’ve tried magnesium-based approaches and felt like they were “good but slow.” A separate 2025–2026 oncology study also found that patients who were already taking regular magnesium oxide going into cisplatin chemotherapy had significantly less treatment-induced constipation than those who weren’t in a 2025–2026 study on magnesium oxide and chemotherapy-induced constipation, which reinforces the preventive, not just reactive, value of consistent magnesium status.

A safety note that’s become clearer in recent research: the same 2025 literature that supports magnesium oxide also flags that older adults and people with kidney disease are at real risk of hypermagnesemia — elevated blood magnesium — which has been linked to serious adverse effects. This isn’t a reason to avoid magnesium oxide if your kidneys are healthy, but it is a firm reason to loop in your physician first if you have any degree of kidney impairment, are elderly, or are on multiple medications.

Citric Acid

Citric acid is exactly what it sounds like — the acid from citrus fruit that gives it a characteristic tangy sourness. Oxy-Powder uses naturally derived citric acid.

This compound enhances nutrient absorption from food and plays a role in cellular energy production. It also tends to improve mineral absorption generally, which likely extends to the magnesium oxide in this formula.

In fact, when magnesium oxide, citric acid, and picosulfate were combined in a clinical trial of patients preparing for colonoscopy, the combination increased colon-cleansing effectiveness in a bowel-prep trial combining these three ingredients.

Summing Up the Ingredients

So you have ozonated magnesium, which may support gut health when used appropriately; magnesium oxide, which reduces constipation and may support bone density, bowel regularity, and mood; and citric acid, which boosts absorption of the other two. I really don’t see where the skeptics’ criticism of this particular combination is coming from.

For myself, a thorough review of the research made me confident enough to try the product. Here’s my own personal account. Bear in mind that I don’t typically struggle with constipation, so my experience may differ from many other people’s. I’m about as “regular” as they get. In other words, if anyone were going to notice a bad side effect from this, it would probably be me, since I don’t usually need help in the regularity department.

Oxy-Powder Side Effects

The main side effect I could find reported is loose stools, which resolve within a day of discontinuing the product. There’s also understandable concern around ozonated products in general, given the FDA’s long-standing statement that ozone gas lacks sufficient safety and efficacy evidence for medical use, with side effects possible in the respiratory tract.

Still, the respiratory and cardiovascular risks that show up in the research are tied specifically to inhaled or intravenous ozone exposure — not to a small, bound amount of ozone in an oral magnesium capsule. It seems unfair to make blanket statements against all ozone-related products based on risks from an entirely different route of administration.

Make sure you’re well hydrated and drinking plenty of water if you try Oxy-Powder. That advice really should apply to everyone every day, but it bears repeating when you’re using a supplement aimed at treating constipation. And again — if you have kidney disease or any chronic health condition, check with your doctor before starting.

My Oxy-Powder Review

I tried Global Healing Oxy-Powder and here’s my experience. Needless to say, I was slightly apprehensive, since I hadn’t done many “colon cleanses” before.

The suggested frequency is 2–3 times weekly. If you don’t achieve 3–5 stools the first day, the instructions say to follow up the next day with 2 more capsules until you do. I’m presuming this dosing structure is intended for when you’re doing a more intentional colon cleanse.

In the spirit of a full Oxy-Powder review, here are the pros and cons from my own experience:

Day 1

First, I took it as most people recommend: right before bed, with a full glass of water, swallowing 4 capsules. This is also the suggested serving size on the bottle. I got up in the morning at my usual time, around 6, made my coffee, and started writing. As I sipped my coffee, I needed to “go” about like I usually do — perhaps a little more liquid than normal, but nothing major.

Remember, I’m very regular, so my movement was a little looser than usual, but not urgent and not a huge volume.

I stepped on the scale, as I usually do, and I was down a couple of pounds from normal. The volume of the bowel movement didn’t fully explain this. Some reviewers claim this supplement helps shed a few pesky pounds — I’m still skeptical, so I planned to weigh in again on Day 2.

By the afternoon, I still felt great. I went again and felt fine — no diarrhea, no cramping. My energy and mood were good. No pain, no discomfort, none of the unpleasantness that comes with laxatives. My belly was slightly rumbly, but my whole digestive tract felt good, and I had good energy all day.

Day 2

I took the supplement again as directed, right before bed. My dream was a little strange, but I don’t think that’s related. When I woke up, my scale was back to normal — no lasting weight change. No big deal; I was just more curious than anything.

Instructions say to take Oxy-Powder 2–3 times a week if desired, so Day 2 was my final day that week. Again, I woke up feeling great and energized. I didn’t have to “go” quite as quickly as the day before, but still did before I had to leave the house.

Throughout the day, I had a couple more bowel movements, hitting the goal of 3 movements for a proper colon cleanse. No urgency, no pain, no issues — just a few brief trips to the bathroom, and I genuinely felt “cleansed.”

My head was clear, my belly felt good, and I had no side effects. My before-and-after with Oxy-Powder was subtle, but I definitely had no gas or bloating, and I noticed a good amount of positive mental energy. This could simply be my body responding to some much-needed extra magnesium.

Follow-Up

Oxy-Powder really lives up to its name. I now actually look forward to the days I take it, because my body feels so relaxed. By adjusting the timing, I’ve found it works even better for me. Here’s what I do now:

I take Oxy-Powder in the morning, since it takes about 6 hours to make me “go.” This way, my muscles and body feel extra relaxed throughout the day, and I feel clean by the end of it. My belly feels great heading into sleep, and I sleep like a baby.

Pros

There are a lot of pros to using an Oxy-Powder colon cleanse. It’s great for occasional constipation, and many people don’t get the bowel movement frequency they need for proper elimination on a daily basis.

After all, if you’re constipated, you’re not clearing toxic byproducts the way you should. Bowel movements are a key part of phase 3 detoxification. A type of algae called chlorella is also very supportive here — chlorella’s health benefits include supporting gut detoxification pathways.

• Energizing yet relaxing
• Provides extra magnesium
• Largely positive customer reviews
• Gentle compared to standard laxatives
• Not habit-forming
• No need to follow an extreme diet alongside it

Cons

Oxy-Powder is a little more expensive than a standard laxative. That said, its side-effect profile is much lighter than laxatives, and it isn’t associated with the dependency that regular laxative use can cause. You get what you pay for in terms of quality, safety, and effectiveness.

The dosing can look a little alarming at first glance — 1,400 mg of magnesium per serving. Keep in mind that at best, only about 20% of magnesium oxide is absorbed into the bloodstream, so realistically you’re absorbing closer to 280 mg. It also isn’t something you’re taking daily. If you have kidney disease or any chronic health condition, check with your doctor first — this matters more than ever given the hypermagnesemia risk data noted above for people with reduced kidney function.

Some people experience cramping and diarrhea, though most users report this supplement working better for them than other constipation options they’ve tried.

Buying Oxy-Powder

Find Oxy-Powder at Global Healing

It’s also available on Amazon here if you’d rather go that route. If you want to see whether plain magnesium oxide capsules do the trick for you instead, that’s worth trying too — let me know how it goes.

Frequently Asked Questions

Conclusion

My Oxy-Powder review is a positive one. I felt great using this product, and based on the research behind the ingredients, I’m fairly convinced it supports overall digestive health. Is it a miracle? No. But I like it and continue to use it.

At a minimum, Oxy-Powder is a good source of well-absorbed magnesium. I’ll continue recommending it to people dealing with constipation, since most of them likely need more magnesium in their diet anyway.

There’s still no direct clinical trial comparing Oxy-Powder to plain magnesium oxide, but it stands to reason that the added citric acid and ozone contribute meaningfully to this particular formula. I’ve had clients with constipation tell me that magnesium oxide alone wasn’t quite enough to resolve their symptoms — which is exactly where a combination formula like this one may have an edge.

If gut health and regularity are ongoing struggles for you rather than occasional ones, it’s worth looking upstream — chronic constipation is often tied to broader gut issues. My Leaky Gut Diet Guide and my post on how MRT food sensitivity testing transformed my own gut health are both good next reads if that sounds like you.