Does allergy to sulfa drugs make one allergic to DMSO or MSM (methylsulfonylmeth

My question is the title.

Hi there, I’m interested in DMS), so great question. I look forward to what the Pro’s chime in with here.

Just asking Perplexity it seems the answer is no -

There is no evidence to suggest that an allergy to sulfa drugs would make someone allergic to DMSO (dimethyl sulfoxide) or MSM (methylsulfonylmethane). The current research indicates that cross-reactivity between sulfonamide antibiotics and non-antibiotic sulfonamides is not clinically significant.

Key points to consider:

  1. Sulfa drug allergies are primarily associated with sulfonamide antibiotics, which have specific structural features not present in DMSO or MSM.

  2. Studies have shown that patients with sulfonamide antibiotic allergies do not have an increased risk of reactions to non-antibiotic sulfonamides.

  3. The chemical structures of DMSO and MSM are different from sulfonamide antibiotics and do not contain the specific features responsible for sulfa allergic reactions.

  4. Allergic reactions to sulfa drugs are often due to an individual’s predisposition to allergic reactions in general, rather than specific cross-reactivity with other sulfur-containing compounds.

While it’s always important to exercise caution with any medication if you have a history of drug allergies, the current evidence does not support avoiding DMSO or MSM solely based on a sulfa allergy. However, as with any medical concern, it’s best to consult with a healthcare professional for personalized advice.

Citations:

Cross-reactivity in sulfonamide & non-antibiotic sulfonamides

Sulfonamide cross-reactivity: is there evidence to support broad cross-allergenicity? - PubMed

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Sulfa allergies: Overview and what to avoid

Managing medicines for people with sulfonamide allergy – NHS SPS - Specialist Pharmacy Service – The first stop for professional medicines advice

Thanks so much for that research and response!