Lentein

Protein

What is it

Lentein is a branded plant-based protein concentrate derived from water lentils (also called duckweed, Lemna species). It is marketed as a complete plant protein with a favorable amino acid profile.

Evidence for 1 use

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

General protein supplementation

Good Evidence

Lentein provides complete protein with a favorable amino acid profile. Quality measurements support its use as a primary plant protein source.

How it works

Water lentils are small floating aquatic plants that contain 35-45% protein on a dry weight basis. The protein has a complete amino acid profile including all nine essential amino acids, with a higher leucine content than many other plant proteins, supporting its use in sports nutrition formulas. Lentein also brings small amounts of carotenoids, chlorophyll, B vitamins, and minerals from the source plant. The protein quality, as measured by PDCAAS and DIAAS, compares favorably to soy and is approaching whey protein scores in some analyses.

Dosage

There is no specific RDA. As a protein source, typical scoops provide 15-25 g of protein. Total protein needs are 0.8-1.6 g/kg/day for most adults, varying with activity and goals.

When and how to take it

Spread protein intake across meals. Around training sessions is common for sports nutrition use.

2 commercial forms

Compare the main delivery options and what they’re best suited for.

Lentein protein concentrate (~65% protein)

Used in plant-based protein blends.

Standard commercial form.

Lentein isolate (higher protein content)

Used where higher protein concentration is needed.

More refined product.

Safety

Water lentil protein appears generally safe in short-term studies. Source quality matters because water-grown plants can concentrate environmental contaminants; manufacturers typically grow lentils in controlled aquaculture systems with monitored water quality. Long-term human safety data are still accumulating.

Who should be cautious

Generally considered safe for most adults. People with kidney disease should follow clinician guidance on protein intake. Allergy to water lentils is rare but possible.

Interactions

No significant interactions reported. As with all protein sources, very high intake may affect medication absorption (notably levodopa) if taken simultaneously.

Food sources

Water lentils (Lemna)

Amount
Variable
%DV
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Frequently asked questions

Is Lentein a complete protein?⌄

Yes. It contains all nine essential amino acids in nutritionally useful amounts.

How does Lentein compare to whey?⌄

It is approaching whey on protein-quality measures but is plant-based. Many people who avoid dairy choose it as a plant alternative.

References

Lentein on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Lentein (PubMed search) — PubMed link

Track Lentein with Pilora

Set up dose reminders, check interactions, and join the community in the Pilora iPhone app.

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.