What is dmso

Last updated: April 1, 2026

Quick Answer: DMSO (Dimethyl Sulfoxide) is an organic solvent derived from wood pulp that penetrates skin readily. It has industrial applications and some medical uses, though its therapeutic effectiveness remains scientifically debated and most medical uses are not FDA-approved.

Key Facts

Overview

Dimethyl Sulfoxide, commonly known as DMSO, is a polar aprotic solvent with unique chemical properties. Derived from lignin, a component of wood pulp, DMSO is a colorless liquid with a distinctive smell. Its remarkable ability to penetrate biological membranes has made it interesting to researchers and controversial in medical applications.

Chemical Properties and Industrial Uses

DMSO is an excellent solvent with strong penetration capabilities, making it valuable in pharmaceutical manufacturing, cosmetics, and industrial applications. It's used to dissolve and deliver other compounds, extract substances from materials, and as a cryoprotectant in preserving biological samples. Its unique properties have made it useful in research laboratories and manufacturing processes worldwide.

Medical History and Current Status

In the 1960s, DMSO was studied extensively for treating various medical conditions, generating significant interest and controversy. The FDA approved DMSO in 1978 for treating interstitial cystitis, a chronic bladder inflammation condition. However, most other medical uses remain unapproved by the FDA, though some physicians prescribe it off-label. The scientific community remains divided on DMSO's therapeutic effectiveness for conditions beyond interstitial cystitis.

Skin Penetration and Side Effects

DMSO's ability to penetrate skin rapidly is both a benefit and a concern. This penetration allows medication delivery but also means that skin applied DMSO enters the bloodstream quickly. Users commonly experience a distinctive garlic-like taste and smell due to metabolism. Other reported side effects include skin irritation, headache, and gastrointestinal effects.

Controversy and Scientific Perspective

While some athletes and individuals report pain relief and reduced inflammation from DMSO, scientific evidence for these uses remains limited. The medical and scientific communities generally consider DMSO an experimental agent for most conditions. Regulatory agencies require careful evaluation of any medical claims, and consumers should consult healthcare providers before using DMSO therapeutically.

Related Questions

Is DMSO safe to use?

DMSO has been used safely in FDA-approved medical contexts, but off-label use carries risks including allergic reactions, skin irritation, and interactions with other medications. Medical supervision is recommended for any therapeutic use.

Why does DMSO cause a garlic smell?

When absorbed through the skin, DMSO is metabolized by the body and converted to dimethyl sulfide, which is exhaled through breath and lungs. This metabolite creates the distinctive garlic or oyster-like odor.

Can DMSO treat arthritis or joint pain?

While some people report pain relief from DMSO, scientific studies haven't conclusively proven its effectiveness for arthritis. The FDA hasn't approved it for this use, and more rigorous research is needed to establish its benefits.

Sources

  1. Wikipedia - Dimethyl Sulfoxide CC-BY-SA-4.0
  2. NCBI - DMSO in Medicine and Research Public Domain