The only FDA-approved use for DMSO is treating interstitial cystitis via bladder instillation, and topical DMSO cream lacks sufficient clinical evidence for most claimed benefits like arthritis pain relief.
DMSO cream has gained a reputation as a catch-all remedy for pain, inflammation, and even cancer, but the FDA has approved it for exactly one purpose: the bladder solution RIMSO-50 for interstitial cystitis. That approval came in the late 1970s, and every topical use—from arthritis to shingles—is off-label. The research is thin, inconsistent, and sometimes flat-out negative. Here is what the evidence actually shows, what the real risks are, and when DMSO might still be worth discussing with a doctor.
What Is DMSO Cream?
Dimethyl sulfoxide is a byproduct of paper manufacturing with unusual properties. It penetrates skin rapidly—so well that it can carry other substances through the skin barrier alongside it. That solvent ability is the main reason people use it topically. But that same property is also the biggest danger.
Does DMSO Cream Help With Arthritis Pain?
A 2011 meta-analysis found that topical DMSO was not significantly more effective than placebo for osteoarthritis pain. That is the strongest evidence available, and it says the difference between DMSO cream and fake cream is effectively zero. Some patients report relief, but clinical trials do not back those anecdotes up on a population level.
What Conditions Does Clinical Evidence Support?
The list of conditions where DMSO shows real promise is short. CRPS (complex regional pain syndrome) patients may get meaningful pain reduction from 50% topical DMSO. Chemotherapy extravasation—when leaked IV drugs damage tissue—may respond to topical DMSO as a preventive treatment. Everything else has weak or contradictory data.
| Condition | Evidence Level | Bottom Line |
|---|---|---|
| Interstitial cystitis | FDA-approved | Effective via bladder instillation, not topical cream |
| Osteoarthritis pain | Not effective | No better than placebo per 2011 meta-analysis |
| Complex regional pain syndrome (CRPS) | Possibly effective | 50% cream may reduce pain in some patients |
| Chemotherapy extravasation | Possibly effective | May prevent tissue damage from leaked drugs |
| Cancer treatment | No evidence | American Cancer Society states no proof exists |
| Wound and burn healing | Insufficient evidence | Used topically but lacks strong clinical backing |
| Glaucoma and cataracts | Insufficient evidence | No robust data supports eye use |
How People Actually Use DMSO Creams
Most people who use DMSO cream buy it online or from health stores as an industrial-grade liquid or gel, not as a prescription. They mix it with water to lower the concentration, apply it to sore joints, or use it to try delivering other substances through the skin. The fact that it is sold without a prescription makes people assume it is safe—that assumption is wrong.
If you are considering DMSO cream, our roundup of the top DMSO creams on the market today can help you compare products that are at least formulated for topical human use rather than industrial solvents.
What Are The Real Dangers?
The biggest risk comes from what DMSO does to your skin barrier. It does not just penetrate itself—it carries everything else on your skin into your bloodstream with it. Soap residue, lotion chemicals, pesticides from gardening, insect repellent—apply DMSO over any of those and they go straight into your body. Industrial-grade DMSO is possibly unsafe for humans because it contains impurities that the liver and kidneys must process. Known side effects include a strong garlic-like odor on skin and breath, skin irritation, itching, burning, stomach upset, and headaches. Severe allergic reactions and eye toxicity have been reported even at low concentrations.
Who Should Never Use DMSO Cream?
Pregnant and breastfeeding women should avoid DMSO entirely because effects on the fetus and infant are unknown. People with diabetes, asthma, liver conditions, or kidney conditions should not use it without a doctor’s approval. DMSO can also increase the effect of other medications you are taking, which can cause serious health problems.
The Biggest Misconceptions About DMSO
Three mistakes come up repeatedly. The first is buying cheap industrial-grade DMSO and applying it to the skin—that risks impurity absorption that can harm your liver and kidneys. The second is believing DMSO cream is FDA-approved for arthritis because RIMSO-50 is FDA-approved for bladder issues—those are completely different products and routes of administration. The third is self-treating cancer with DMSO, which delays proper medical care and has zero evidence behind it according to the American Cancer Society and Memorial Sloan Kettering.
Before You Try DMSO Cream
If you still want to try topical DMSO after reading the risks, follow these rules: buy only pharmaceutical-grade DMSO from a reputable source, wash your skin thoroughly with plain soap and water before applying, start with a low concentration (50% or less), and never apply it over open wounds or irritated skin. And talk to your doctor first.
FAQs
Can I put DMSO directly on my skin?
Yes, but only pharmaceutical-grade DMSO should contact your skin. Industrial-grade DMSO contains impurities that are absorbed into your bloodstream and can harm your liver and kidneys. Always wash your skin thoroughly before applying to avoid carrying other chemicals into your body.
Does DMSO help sciatica pain?
No clinical trials specifically test DMSO for sciatica. The closest evidence is for general nerve pain and complex regional pain syndrome, where some patients report relief. But the lack of direct studies means any benefit for sciatica is unproven speculation.
Is DMSO the same as MSM?
No. DMSO (dimethyl sulfoxide) and MSM (methylsulfonylmethane) are different compounds. DMSO is a solvent that penetrates skin rapidly and has anti-inflammatory properties. MSM is a sulfur-containing compound often taken as a supplement for joint health. They are not interchangeable.
Why do I smell garlic after using DMSO?
That garlic-like odor is normal and expected. The body breaks DMSO down into dimethyl sulfide, which is released through the skin and breath. The smell can last 24 to 72 hours after a single application and is not a sign of anything wrong.
Can DMSO cure a dog’s arthritis?
Veterinarians sometimes use DMSO for inflammatory conditions in animals, including arthritis, but the evidence is no stronger than it is for humans. It is available as a veterinary gel or solution. Consult a veterinarian before using it on a pet, because improper dosing or concentration can cause harm.
References & Sources
- WebMD. “DMSO: Uses and Risks.” Clinical overview of DMSO safety, side effects, and drug interactions.
- Healthline. “DMSO (Dimethyl Sulfoxide): Uses, Benefits, Risks, and More.” Comprehensive guide on DMSO uses and FDA approval status.
- Science Feedback. “Beware of ‘miracle cure’ claims surrounding DMSO.” Fact-check on unsubstantiated health claims about DMSO.