Our verdict: Oxy-Powder will probably produce bowel movements, because its main ingredient, magnesium oxide, is a standard osmotic laxative. The rest of the pitch ("oxygen" colon cleansing, detox, energy, bone density and "clinically proven") has no independent evidence, and the only study is a seven-day survey of 50 people with no control group. One four-capsule serving lists 1,400 mg of magnesium, well over twice the NIH's daily upper limit for supplemental magnesium, which is a real concern for people with kidney problems. A plain magnesium laxative works the same way. Constipation that lasts more than three weeks calls for a doctor's visit, not a cleanse.
Independent review: we have no affiliate relationship with the maker.
Below: what is in the capsules, how they actually work, what the evidence says about each marketing claim, who should avoid the product, and what to try or do instead.
What's in Oxy-Powder
Oxy-Powder is a capsule supplement made by Global Healing, a company based in Houston, Texas. It is sold as an "oxygen-based" colon cleanse (manufacturer product page).
The manufacturer's label, as recorded in the NIH Dietary Supplement Label Database, lists 1,400 mg of magnesium in each four-capsule serving, from ozonated magnesium oxides. A 60-capsule bottle holds 15 servings (NIH DSLD, label 231210). Retailer listings of the same panel also show 90 mg of citric acid, with a vegetable capsule (cellulose) and organic gum acacia as the other ingredients (Vitacost). Under FDA labeling guidance, a mineral is normally listed by the weight of the mineral itself, not the compound, so this most likely means 1,400 mg of elemental magnesium (FDA Dietary Supplement Labeling Guide). Neither the label nor the manufacturer says so directly.
Even if that figure is the weight of the oxide rather than the magnesium itself, one serving would still provide about 840 mg of elemental magnesium. That is more than twice the 350 mg daily adult limit the NIH Office of Dietary Supplements sets for supplemental magnesium (NIH ODS). The limit applies to supplements and medicines, not to magnesium in food.
The manufacturer's directions say to take four capsules at bedtime, add two capsules each night until there are three to five bowel movements the next day, and use the product two to three times a week (manufacturer). The directions we found give no maximum. Here is what that escalation means in magnesium, by our calculation from the label:
| Capsules per night | Labeled magnesium | Compared with the 350 mg upper limit (if elemental) |
|---|---|---|
| 4 (starting serving) | 1,400 mg | 4 times the limit |
| 6 | 2,100 mg | 6 times the limit |
| 8 | 2,800 mg | 8 times the limit |
If the label figure were oxide weight instead, each amount would be about 60% as much elemental magnesium. Every row would still be above the limit.
How it actually works
Oxy-Powder works as an osmotic laxative. Magnesium oxide draws water into the bowel. That softens stool and triggers a bowel movement. Doctors prescribe magnesium oxide this way for constipation (Mori et al., 2019). This is why the product is likely to do what buyers notice first: make them go.
The "oxygen" part of the pitch is a different matter. We found no study showing that swallowed ozonated magnesium oxide releases oxygen that breaks down stool. The magnesium alone explains the bowel movements.
Do colon cleanses work at all?
The research does not support colon cleansing for health. A systematic review by Acosta and Cash in the American Journal of Gastroenterology (2009) found no methodologically rigorous controlled trials supporting colonic cleansing for general health. It noted adverse effects described in case reports and case series, and concluded the practice cannot be recommended (Acosta and Cash, 2009).
The National Center for Complementary and Integrative Health says evidence for detox and colon-cleansing products is limited, and that cleanses can cause serious side effects, including dehydration and electrolyte imbalance (NCCIH, updated March 2025).
The American College of Gastroenterology says colonic irrigation is not proven to treat irritable bowel syndrome or any other condition, and that it can disturb fluid and electrolyte balance (ACG). That item is patient information, not a formal guideline. We found no formal position statement from the American Gastroenterological Association or the American College of Gastroenterology specifically on colon-cleansing products.
What the evidence shows, claim by claim
The manufacturer has published a 2025 consumer-perception report. It followed 50 adults with self-reported digestive complaints for seven days, with no control group. The report has not been peer-reviewed, and it does not say who funded it. The authors say larger randomized trials are needed (study report).
The study excluded people with diagnosed IBS, inflammatory bowel disease or Crohn's disease, and people taking laxatives. Its dosing also differed from the label, rising by one capsule a night up to seven. Participants reported weekly bowel movements rising from about 4 to about 8. That fits a laxative effect. Without a comparison group, it can't show anything more.
| Claim | What the evidence shows | Verdict |
|---|---|---|
| Relieves constipation | Magnesium oxide is an established osmotic laxative. No independent trial of Oxy-Powder itself; only the uncontrolled 7-day manufacturer report. | Likely to produce bowel movements, because of the magnesium |
| "Clinically proven" safe and effective | No published or peer-reviewed trial found. The only study is the 50-person survey described above. | Unsupported |
| Oxygen breaks down or "oxidizes" hardened stool | No study of swallowed ozonated magnesium oxide was found. | Unsupported |
| Ozone treats infections and cancer | FDA has not approved ozone as a treatment for these conditions. Federal rules describe ozone as having no known useful medical application (21 CFR 801.415). In July 2022 FDA sent Living Foods LLC a warning letter about a silver-ozone product that it considered an unapproved new drug (FDA warning letter, 2022). Cleveland Clinic calls ozone therapy controversial because evidence on its safety is limited, and says FDA warned against it in 2019. | Misleading: not an approved or proven treatment |
| Up to 20 pounds of compacted stool builds up in the gut | No source supports this. The Acosta and Cash review found no rigorous controlled trials supporting colonic cleansing. | Unsupported |
| Detoxifies and cleanses the whole digestive tract | NCCIH says evidence for detox and cleansing products is limited. | Unsupported |
| Supports bone density and lowers osteoporosis risk | Observational studies link magnesium from food to hip bone density (meta-analysis). No randomized trial of magnesium oxide supplements with fracture outcomes was found. | Unsupported |
| More energy and better performance | No evidence beyond self-reports in the uncontrolled survey. | Unsupported |
| Supports gut flora and the microbiome | No microbiome data for this product. | Unsupported |
| Improves digestion and nutrient absorption | No data. Laxative-induced diarrhea can reduce nutrient absorption. | Unsupported |
| Reduces bloating | Self-reported in the uncontrolled survey only. | Unsupported |
| Safe for long-term use and not habit-forming | No long-term safety or dependence data for this product. The risk of magnesium build-up rises with reduced kidney function and, in one study, was seen only at higher doses (see below). | Unsupported |
Who should avoid Oxy-Powder
The label itself advises consulting a healthcare provider if you have a history of heart or kidney disease (NIH DSLD). Talk to a doctor or pharmacist before using it if any of these apply:
- Kidney disease or reduced kidney function. The kidneys normally clear extra magnesium, so the risk of magnesium toxicity rises when they don't work well (NIH ODS). A retrospective study at one Tokyo hospital looked at 193 people taking magnesium oxide daily for constipation who had their blood magnesium measured. Ten (5.2%) had high blood magnesium, called hypermagnesemia. All 10 were taking at least 1,000 mg a day, although the authors describe the statistical link between dose and hypermagnesemia as marginal. Advanced kidney disease was also linked to it. The authors advise monitoring blood magnesium in people taking 1,000 mg a day or more, especially with impaired kidney function (Mori et al., 2019). That study did not test Oxy-Powder, but Oxy-Powder's starting serving lists 1,400 mg.
- Heart disease. NCCIH lists heart disease among the conditions that raise the risk of colon cleansing (NCCIH).
- Digestive disease, past bowel surgery or severe hemorrhoids. NCCIH lists these as higher-risk too.
- Pregnancy or breastfeeding. We found no safety data for Oxy-Powder in pregnancy or breastfeeding. Ask your obstetric clinician before using any laxative product.
- Medicines that interact with magnesium. According to the NIH Office of Dietary Supplements, magnesium-rich supplements can reduce the absorption of oral bisphosphonates (osteoporosis drugs such as alendronate), and magnesium may interact with tetracycline and quinolone antibiotics. Diuretics and proton pump inhibitors can also affect magnesium levels (NIH ODS). If you take any of these, or any prescription medicine, ask your prescriber or a pharmacist before starting.
Side effects
- Diarrhea, nausea and abdominal cramping, which are known effects of high doses of supplemental magnesium.
- Magnesium toxicity at very high doses, which can cause low blood pressure, vomiting, trouble breathing, irregular heartbeat and cardiac arrest. NIH ODS notes a few fatal cases of high blood magnesium have been reported.
- Dehydration and electrolyte imbalance, which NCCIH warns about with cleanses (NCCIH).
- Reduced nutrient absorption when laxatives cause diarrhea.
- High blood magnesium, mainly in people with reduced kidney function or at higher doses.
If you get severe stomach pain, or diarrhea that does not stop, stop taking the product and contact a doctor or pharmacist.
Other options to ask a pharmacist or doctor about
For occasional constipation, there are common over-the-counter options. Ask a pharmacist or doctor which one fits, especially if you have a health condition or take other medicines.
- Magnesium laxatives. Plain magnesium oxide, magnesium citrate and milk of magnesia (magnesium hydroxide) work the same way Oxy-Powder does. The same kidney and drug-interaction cautions apply. The "oxygen" claims add no benefit shown in research.
- Fiber. More fiber from food, or a fiber supplement such as psyllium.
- PEG (polyethylene glycol). An over-the-counter osmotic laxative that contains no magnesium.
A 2023 AGA and ACG guideline on chronic constipation strongly recommends polyethylene glycol and gives fiber, magnesium oxide, lactulose and senna conditional recommendations (AGA-ACG guideline, 2023).
Frequently asked questions
How long does Oxy-Powder take to work?
The label is built around an overnight effect: take it at bedtime and adjust the capsule count until there are three to five bowel movements the next day. That is the manufacturer's framing. No independent study has measured how quickly it works.
Is Oxy-Powder safe to take long term, and is it habit-forming?
There are no long-term safety or dependence data for this product. The label itself directs use two to three times a week, not daily. The risk of magnesium build-up rises with dose and with reduced kidney function. If you find you need a laxative regularly, see a doctor to find out why.
Can I take Oxy-Powder with other magnesium supplements?
Be careful. The NIH's 350 mg upper limit covers all magnesium from supplements and medicines combined. Oxy-Powder's starting serving is already above it, so adding another magnesium product raises the total further. Ask a pharmacist first.
Is Oxy-Powder vegan or gluten-free?
The manufacturer's label says Oxy-Powder is vegan and gluten-free (NIH DSLD).
Who makes Oxy-Powder, and has the company faced regulatory action?
Global Healing of Houston, Texas, makes it. We did not find an FDA warning letter or import alert that names Global Healing or Oxy-Powder. Our check of FDA's own databases was incomplete.
The company has faced two California Proposition 65 lead cases over its Paratrex products. In 2013, a California lead case against Global Healing Center named Paratrex capsules and three other supplements. The proposed settlement totaled $97,750, including $5,000 in civil penalties (settlement). In 2022, Global Healing Center, LLC was sued in Alameda County over lead in its Paratrex Digestive Cleanse. A proposed consent judgment dated January 24, 2023 required reformulation or warnings and a $50,000 payment that included $5,000 in penalties (consent judgment). Neither case named Oxy-Powder.
Is this review sponsored?
No. We have no affiliate relationship with Global Healing, this page has no product links, and we earn nothing if you buy Oxy-Powder. See our affiliate disclosure.
When to see a doctor for constipation
A laxative can help with occasional constipation. It is not the answer to constipation that keeps coming back, and a cleanse can hide a problem that needs attention. Mayo Clinic advises making an appointment if constipation (Mayo Clinic):
- lasts longer than three weeks;
- makes everyday activities difficult;
- comes with bleeding from the rectum or blood on toilet tissue;
- comes with blood in the stool, black stools, or other unusual changes in the shape or color of stool;
- comes with stomach pain that doesn't stop;
- comes with weight loss you didn't try for.
Our page on digestive issues covers what a medical workup usually checks first and what the evidence shows for holistic options such as peppermint oil and probiotics.
A primary care doctor or gastroenterologist is the right first stop. If you also want help with diet and daily habits, a licensed naturopathic doctor or a functional medicine doctor can work alongside that care. Our guide on how to find and vet a naturopathic doctor explains how to check credentials.
Last reviewed: October 2026