PEG-30 (Polyethylene Glycol 30)
Also known as: polyethylene glycol, PEG, macrogol, PEG 30 mL dose
Effective Dosage
No established dose for supplement use; clinical bowel prep doses range from 1–4 L solutions
What the Science Says
Polyethylene glycol (PEG) is a synthetic polymer used medically as an osmotic laxative to clean the colon before colonoscopy. In clinical settings, it draws water into the bowel to flush out stool. The provided research covers PEG only in the context of bowel preparation protocols and pharmaceutical drug delivery — not as a consumer dietary supplement.
What It Doesn't Do
Not shown to support gut health as a daily supplement. No evidence it detoxifies the body. Not a prebiotic or probiotic. No evidence it aids weight loss, improves digestion long-term, or provides any nutritional benefit. The plant-stress research in the provided papers has zero relevance to human supplementation.
Evidence-Based Benefits
Polyethylene glycol (PEG) is a synthetic polymer used medically as an osmotic laxative to clean the colon before colonoscopy. In clinical settings, it draws water into the bowel to flush out stool. The provided research covers PEG only in the context of bowel preparation protocols and pharmaceutical drug delivery — not as a consumer dietary supplement.
Weak EvidenceEffective at: No established dose for supplement use; clinical bowel prep doses range from 1–4 L solutions
Source: auto-research
Absorption & Bioavailability
Unknown for supplement purposes. As a laxative, PEG is largely not absorbed — it works by staying in the gut and drawing in water. Its pharmaceutical conjugate form (PEGylation) is used to extend drug half-life in the bloodstream, but this is unrelated to oral supplement use.
Red Flags to Watch For
- PEG-30 is not a recognized dietary supplement ingredient — its presence in a supplement product label is unusual and warrants scrutiny
- PEG is a pharmaceutical laxative agent; regular unsupervised use can disrupt electrolyte balance
- No clinical trials in the provided data support PEG as a standalone supplement for any health benefit
- Some individuals have reported allergic reactions to PEG in pharmaceutical products; cross-reactivity risk exists
- The provided research papers are almost entirely about medical colonoscopy prep or plant biology — none validate PEG as a human health supplement
Research Sources
- PubMed
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-04-09