# Poppy Seed (Papaver somniferum)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/poppy-seed
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-04-03
**Evidence Score:** 2 / 10
**Category:** Seed
**Also Known As:** Papaver somniferum, opium poppy seeds, white poppy seeds, blue poppy seeds, maw seed, khus khus, posto, haşhaş tohumu, semillas de amapola, graines de pavot

## Overview

Poppy seeds (Papaver somniferum) are rich in linoleic acid (70–75% of fatty acids) and γ-tocopherol (up to 287 mg/kg), contributing to their nutritional profile as an oilseed. However, they contain trace alkaloids including morphine and codeine, and current research prioritizes contamination risk assessment over therapeutic application.

## Health Benefits

• No clinically proven health benefits - research focuses on contamination risks rather than therapeutic effects
• Rich in linoleic acid (70.7-75.2% of fatty acids) - nutritional component but no clinical trials on health outcomes
• Contains γ-tocopherol (up to 287 mg/kg) - vitamin E compound but no efficacy studies available
• Traditional use for pain and sedation refers to opium/latex, not the seeds themselves
• May cause unintended opioid exposure from trace alkaloids - not a benefit but a safety concern

## Mechanism of Action

Poppy seeds contain trace opioid alkaloids—primarily morphine and codeine—that bind to μ-opioid receptors in the central nervous system, though dietary quantities are generally subtherapeutic. The dominant fatty acid, linoleic acid (an omega-6), is incorporated into cell membranes and serves as a precursor to arachidonic acid and downstream eicosanoids via cyclooxygenase and lipoxygenase pathways. γ-Tocopherol, the primary vitamin E isoform present, scavenges reactive nitrogen species and lipid peroxyl radicals, providing [antioxidant activity](/ingredients/condition/antioxidant) distinct from α-tocopherol.

## Clinical Summary

No randomized controlled trials have evaluated poppy seed supplementation for specific health outcomes in humans. Research is dominated by pharmacokinetic and food safety studies documenting that consumption of poppy seed-containing foods (bagels, pastries) can produce urine morphine concentrations of 1,000–4,000 ng/mL, sufficient to trigger positive workplace drug screens. A 2019 FDA advisory highlighted that unwashed poppy seeds sold online can contain morphine concentrations up to 251 mg/kg—far exceeding levels in culinary preparations—and have been linked to fatalities. The overall clinical evidence base for therapeutic benefit is absent; nutritional contributions are acknowledged but unstudied in intervention trials.

## Nutritional Profile

Per 100g dried poppy seeds: Calories ~525 kcal, Fat ~41.6g (predominantly polyunsaturated), Protein ~17.99g, Carbohydrates ~28.1g, Dietary Fiber ~19.5g. Fatty acid profile dominated by linoleic acid (omega-6, 70.7-75.2% of total fatty acids), oleic acid (~16-18%), and palmitic acid (~8-10%). Tocopherol content notable with γ-tocopherol up to 287 mg/kg and α-tocopherol ~50-80 mg/kg, making poppy seed oil a significant vitamin E source. Mineral content per 100g: Calcium ~1438mg (one of the highest among seeds), Phosphorus ~870mg, Magnesium ~347mg, Iron ~9.76mg, Zinc ~7.9mg, Manganese ~6.71mg, Potassium ~719mg. B-vitamins present including Thiamine (B1) ~0.854mg, Folate ~82µg, Niacin ~0.896mg. Bioactive alkaloids (morphine, codeine, thebaine, noscapine) are present in trace amounts in seeds, primarily concentrated in the seed coat/hull from latex contamination during harvest; morphine content ranges 17-251 µg/g depending on variety and processing — nutritionally negligible but toxicologically significant. Bioavailability note: High oxalate and phytate content (~1.1-1.4g phytic acid/100g) may reduce mineral absorption, particularly calcium and iron, by 30-50% in unprocessed seeds; soaking or heating partially reduces phytate load.

## Dosage & Preparation

No clinically studied dosage ranges exist for poppy seeds as they lack therapeutic trials and are used culinarily, not medicinally. EFSA sets food safety limits (e.g., morphine <20 μg/day for adults) but these are contamination thresholds, not therapeutic doses. Washed seeds have lower alkaloid levels than unwashed varieties. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Unwashed or 'pod-washed' poppy seeds pose serious toxicity risk due to highly variable morphine content (up to 251 mg/kg) and have caused opioid overdose deaths; culinary-grade washed seeds contain substantially lower but still detectable alkaloid levels. Poppy seed consumption can produce false-positive opiate results on immunoassay urine drug tests, with morphine detected up to 48 hours post-ingestion; confirmatory GC-MS testing with a cutoff of 2,000 ng/mL reduces but does not eliminate false positives. Drug interactions are relevant for CNS depressants, benzodiazepines, and MAO inhibitors due to the additive or potentiated opioid effect of alkaloid residues. Poppy seed products—especially unwashed seeds or concentrated extracts—are contraindicated in pregnancy due to risk of fetal opioid exposure, neonatal abstinence syndrome, and potential teratogenicity.

## Scientific Research

No human clinical trials, RCTs, or meta-analyses on poppy seeds for biomedical or therapeutic uses were identified. Research primarily addresses food safety concerns regarding trace alkaloid contamination (morphine up to 63,994 ng/g, codeine up to 23,307 ng/g) rather than efficacy. No PMIDs were provided in the sources as no therapeutic trials exist.

## Historical & Cultural Context

While poppy seeds have been used globally in culinary traditions for baking and oil, the medicinal history belongs to Papaver somniferum's latex/opium, used for over 5,000 years in Sumerian, Egyptian, Greek, and Chinese medicine for pain and sedation. Seeds themselves were not primary medicinals in traditional systems, with non-opium varieties focused on food use.

## Synergistic Combinations

No synergistic ingredients identified due to lack of therapeutic research

## Frequently Asked Questions

### Can eating poppy seeds make you fail a drug test?

Yes. Consuming as little as one poppy seed bagel can elevate urinary morphine concentrations to 1,000–4,000 ng/mL, well above the standard 300 ng/mL immunoassay cutoff. Even the more stringent federal workplace cutoff of 2,000 ng/mL can be exceeded after a single moderate serving of poppy seed food products, with detection possible up to 48 hours post-ingestion.

### Are poppy seeds dangerous to eat?

Culinary-grade washed poppy seeds used in baking are generally safe in typical dietary amounts, but unwashed or 'pod-washed' seeds sold online present serious danger—the FDA has documented morphine concentrations up to 251 mg/kg in such products, and multiple fatalities have been reported from poppy seed tea brewed from these seeds. The alkaloid content is highly variable and unpredictable, making risk assessment difficult for consumers.

### What nutrients are in poppy seeds?

Poppy seeds are nutritionally dense per 100 g, providing approximately 525 kcal, 28 g fat (predominantly linoleic acid at 70–75% of total fatty acids), 18 g protein, and significant minerals including calcium (~1,448 mg), phosphorus (~870 mg), and magnesium (~347 mg). They also contain γ-tocopherol at concentrations up to 287 mg/kg of seed oil, though no clinical trials have quantified health outcomes from these nutrients in isolation.

### How much morphine is in poppy seeds?

Morphine content varies dramatically by processing method: culinary washed seeds typically contain 17–251 µg/g, while unwashed commercial seeds tested by the FDA contained up to 251 mg/kg (approximately 251 µg/g). Pod-washed seeds prepared as tea can yield liquid concentrations sufficient to cause acute opioid toxicity and death, making product source and preparation method the critical safety variables.

### Is there a poppy seed supplement for pain or sleep?

No clinically validated poppy seed supplement exists for pain relief or sleep, and products marketed for these purposes are not supported by controlled clinical evidence. While the opioid alkaloids morphine and codeine present in poppy plant material do act on μ-opioid receptors to produce analgesia and sedation, the alkaloid content in seed-based products is too variable and potentially too high to be used safely outside pharmaceutical-grade opioid medications regulated by the FDA.

### Are poppy seeds safe for pregnant women and nursing mothers?

Poppy seeds are generally considered safe in typical culinary amounts during pregnancy and lactation, as food consumption differs from concentrated supplementation. However, pregnant and nursing women should consult their healthcare provider before taking poppy seed supplements or extracts, since safety data specific to these populations is limited. The trace alkaloid content, while minimal in food amounts, warrants caution with concentrated forms during these sensitive periods.

### Does poppy seed interact with pain medications or sedatives?

While poppy seeds contain only trace amounts of alkaloids in their whole seed form, theoretical interactions with opioid medications or CNS depressants cannot be completely ruled out with concentrated supplements or extracts. If you take prescription pain relievers, sedatives, or other CNS-active medications, inform your healthcare provider before consuming poppy seed supplements. The interaction risk is minimal with dietary poppy seed consumption but increases with supplement doses.

### What is the difference between poppy seed supplements and whole poppy seeds in food?

Whole poppy seeds in culinary use contain beneficial linoleic acid and vitamin E but deliver minimal bioactive alkaloids, while concentrated poppy seed supplements or extracts may contain higher levels of these compounds in smaller volumes. Supplement formulations vary widely in processing method, concentration, and standardization, making their effects unpredictable compared to the consistent nutritional profile of whole seeds. Whole poppy seeds are better established as a safe food ingredient, whereas supplements lack standardized dosing and clinical efficacy data.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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