RISK

Diethyl phthalate

Diethyl phthalate (DEP)
Likely Unsafe V2 Verified Excipients & Additives
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PubMed Studies
5
PubChem CID
About

Phthalate plasticiser used in enteric coatings for tablets and capsules. Endocrine disruptor — antiandrogenic effects affecting male reproductive development. Metabolite monoethyl phthalate (MEP) detected in urine of most people. Under increasing regulatory restriction globally.

How it works (mechanism of action)

Acts on cellular signalling pathways relevant to the documented clinical indications. Contains bioactive compounds with enzyme-modulating, receptor-binding, or antioxidant properties studied in peer-reviewed literature.

👥 Safety by Population
PopulationSafety RatingMax Safe Dose
GeneralLikely unsafeNot established
PregnancyLikely unsafeNot established
ElderlyLikely unsafeNot established
🚫 Contraindications & Warnings

Endocrine disruptor: antiandrogenic. Male reproductive toxicity in animal studies. Developmental concerns in pregnancy. EU has restricted phthalates in toys and childcare products. FDA is reviewing pharmaceutical uses. California Proposition 65 listed. Prefer alternative enteric coating polymers.

🏷️ Other Names
Diethyl phthalate (DEP)
Updated: 2026-04-11
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