Last verified: 58 days ago
Rice Powder
Also known as: rice flour, Oryza sativa powder, rice starch, ground rice
Evidence under review. — Not yet rated
Inert food ingredient. Primarily used as a placebo in clinical trials, not a proven supplement.
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What it does
Rice powder is finely milled rice grain, composed mainly of starch with small amounts of protein and fiber. In the provided research, it appears almost exclusively as an inert placebo comparator...
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Evidence quality
Evidence base hasn't been formally rated yet. See research below.
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Clinical dose
No established dose
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Found in
What the Science Says
Rice powder is finely milled rice grain, composed mainly of starch with small amounts of protein and fiber. In the provided research, it appears almost exclusively as an inert placebo comparator in clinical trials — meaning researchers chose it specifically because it has no expected biological effect. One study explored rice bran (a different product) for gut microbiota effects, and lab studies combined rice powder with strawberry for anti-inflammatory food testing, but neither establishes rice powder itself as a therapeutic supplement ingredient.
What It Doesn't Do
Not a proven cholesterol-lowering agent — it was the control group that showed no benefit. No evidence it improves gut health on its own. Not an anti-inflammatory supplement. No clinical evidence it does anything meaningful as a standalone supplement ingredient. Being 'natural' and 'from rice' doesn't make it therapeutic.
Evidence-Based Benefits
Widely used as an inert placebo in clinical trials due to its lack of measurable biological effect.
Moderate EvidenceEffective at: No therapeutic dose established
Supporting studies (click to view on PubMed):
Absorption & Bioavailability
Unknown — no pharmacokinetic or absorption data provided in the studies. As a starch-based food ingredient, it is generally digestible, but no therapeutic bioavailability data exists.
Red Flags to Watch For
- Rice powder is routinely used as a placebo in clinical trials — its presence in a supplement may indicate it is a filler or bulking agent with no active benefit
- Products listing rice powder as a key active ingredient may be misleading consumers about its therapeutic value
- Rice powder can contribute to blood sugar spikes due to its high starch content — relevant for diabetics or those monitoring glycemic response
- Contamination risk: rice can accumulate heavy metals like arsenic; no safety testing data provided in the studies for supplement-grade rice powder
- Frequently used as an adulterant in higher-value powders (e.g., Panax notoginseng) — its presence in a product may signal quality control issues
Products Containing Rice Powder
See how Rice Powder is used in these analyzed products:
Frequently Asked Questions
What does Rice Powder do?
Inert food ingredient. Primarily used as a placebo in clinical trials, not a proven supplement.
What is the effective dose of Rice Powder?
No established dose
Is Rice Powder safe?
Rice powder is routinely used as a placebo in clinical trials — its presence in a supplement may indicate it is a filler or bulking agent with no active benefit
What doesn't Rice Powder do?
Not a proven cholesterol-lowering agent — it was the control group that showed no benefit.
Research Sources
- PubMed
- NIH DSLD
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-05-25