Lotus Seeds (Makhana relatives): Nutrients, What Research Shows and Safety

Lotus seeds are the seeds of the sacred lotus (Nelumbo nucifera), an aquatic plant. The part eaten is the kernel from the seed pod, sold dried (whole or split) and used in Asian soups, sweets and pastes. In traditional Chinese medicine they are called Nelumbinis semen. People eat them for protein, minerals and traditional reasons. This page separates lotus seeds as a food from extracts and hype, and says plainly that good human trials are missing.

Read this first

• Not the same as makhana (fox nuts). Makhana, also called fox nut or prickly water lily, is the seed of a different plant, Euryale ferox. [4] It belongs to the water lily family (Nymphaeaceae). [5] A trial or nutrition table for makhana does not apply to lotus seeds. Many shops sell both as "lotus seeds", so check the Latin name on the label.
• Not blue lotus. "Blue lotus" sold as tea or vape is the flower of a water lily, Nymphaea, not Nelumbo; see blue lotus.
• Mold. A 2026 study of 41 natural lotus seed samples found aflatoxins (mold toxins) in 63.4% of them. [3] Throw away seeds that look moldy, discolored or shriveled, as WHO advises for nuts. [11]
• Evidence. Reviews describe many effects of lotus seed extracts in cells and animals. [2][6][7] We found no controlled human trial of eating lotus seeds in the sources we read.

What is in it (USDA values)

USDA data for dried lotus seeds (SR Legacy). USDA household portions are 1 cup (32 g) and 1 ounce (28.35 g, about 42 medium seeds). [1] The serving column below is for 1 ounce (28 g).

Source: USDA FoodData Central item 170149. [1] % Daily Value uses the FDA 2016 Daily Values; values vary with variety, growing place, drying and storage. USDA lists no fiber, vitamin E or selenium value for this item, and 0 mg vitamin C, so we show none or zero. These are dried seeds, so the values are per dried weight; cooked seeds absorb water and have less per gram.

A 2021 review calls lotus seeds low in calories and a source of many nutrients and bioactive compounds. [2] Reviews and lab papers describe polysaccharides, flavonoids and polyphenols in the seeds, [9] and alkaloids such as liensinine, isoliensinine and neferine in the seed embryo (the green core). [8] These findings come from laboratory and animal research, not from trials of eating lotus seeds.

What research says

Eaten as food vs taken as an extract. The studies above used extracts, isolated compounds or lab animals, at doses and forms that a bowl of lotus seed soup does not match. We did not review lotus seed powders or capsules because we found no trial of them. A 2026 randomized trial of a flatbread made with makhana (Euryale ferox) in people with diabetes is about a different plant and does not count as lotus seed evidence.

How much is a normal serving

The USDA household portion is 1 ounce (28.35 g, about 42 medium seeds), which is 94 kcal, or 1 cup (32 g). [1] This is information, not a prescription. Dried seeds are usually soaked and simmered, which makes them larger and softer; we did not find a source on how cooking changes their nutrients. Candied seeds, pastes and canned desserts often contain added sugar; check the label.

Safety, allergy and medicines

• Mold and aflatoxin. WHO says aflatoxins are among the most poisonous mycotoxins and that eating a lot at once can cause life-threatening liver damage; it advises discarding nuts that look moldy, discolored or shriveled. [11] FDA says regularly eating foods with aflatoxins can increase the risk of liver cancer. [12] The 2026 study above found aflatoxins in 63.4% of 41 natural lotus seed samples, and suggests prompt drying after harvest. [3] Buy from sellers who store seeds dry, and keep them in a cool, dry, sealed place. See storing nuts and seeds.
• Allergy. We did not find a source we read on how common lotus seed allergy is. Any food can cause an allergic reaction. FDA lists the nine major US allergens (tree nuts, peanuts and sesame among them), and lotus seed is not on that list. [14] For trouble breathing or swelling of the face or throat, call 911. See food allergy basics and emergency signs.
• Choking. The NHS says whole nuts should not be given to children under 5 because they can choke. [13] The page does not name lotus seeds; whole hard dried seeds are a similar shape, so we suggest the same caution. Ask a pediatrician. See food safety for babies and toddlers.
• Kidney disease. NIDDK says that in chronic kidney disease potassium and phosphorus can build up in the blood, so people should work with a dietitian on limits. [10] Lotus seeds are high in both: 1,368 mg potassium and 626 mg phosphorus per 100 g, which is 29% and 50% of the Daily Value. [1] See foods, kidney disease, potassium and oxalates.
• Kidney stones. NIDDK says people with calcium oxalate stones may be told to limit nuts and nut products. [15] We did not find an oxalate value for lotus seeds in what we read.
• Medicines. Proper evidence not found in the sources we read for interactions between eating lotus seeds and medicines. Lotus seed extract lowered blood pressure in rats [6], but that does not show an effect from eating the seeds; ask a pharmacist if you take blood pressure medicine.
• Pregnancy and breastfeeding. Proper evidence not found in the sources we read.
• Embryo and alkaloids. Reviews describe pharmacological effects of the embryo alkaloids in the lab. [8] We found no source on safe amounts of the embryo, so we make no claim.

Choosing, storing and food safety

• Pick dry, whole, evenly colored seeds; discard any that smell musty or look moldy, discolored or shriveled. [11]
• WHO notes that moulds can grow before and after harvest, and that damaged grain and poor storage raise the risk. [11]
• FDA says mold growth depends on temperature, humidity and rain during growing, harvest and storage. [12] Keep seeds dry.

Related pages

• Storing nuts and seeds: rancidity, mold and aflatoxin
• Nut and seed allergy basics
• Chestnuts
• Blue lotus (a different plant)
• Food allergy basics and emergency signs