How much solanine is toxic?
Daniel Lopez
Updated on March 17, 2026
It is suggested that doses of 200–400 mg for adult humans can cause toxic symptoms (20–40 mg for children). Most commercial potatoes have a solanine content of less than 0.2 mg g−1. However, potatoes that have been exposed to light and have started to turn green can show higher concentrations.
How much green potato is toxic?
Solanine is considered a neurotoxin, and ingestion by humans can cause nausea and headaches and can lead to serious neurological problems and even death if enough is consumed. A recent study suggested that a 16-oz (450-gram) fully green potato is enough to make a small adult ill.How does the body get rid of solanine?
Most people can easily cope with the solanine in the average portion of potato and show no symptoms of poisoning because the body can break it down and rapidly and excrete the products in the urine.How long does solanine stay in the body?
“[S]olanine levels in the blood are low after ingestion due to poor absorption by the gastrointestinal tract. Second, it is removed from the body fairly rapidly in both the urine and the feces, usually within 12 hours, preventing accumulation in the tissues.Is solanine toxic to humans?
Solanine is a toxic glycoalkaloid known to accumulate under certain conditions in potato plant, sprouts and tuber in levels which, if ingested, may cause poisoning in humans and farm animals.What Are Nightshades (and why you should avoid them)
Can you survive solanine poisoning?
Solanine poisoning: symptomsMost potato poisoning victims recover fully, although fatalities are known, especially when victims are undernourished or do not receive suitable treatment. Symptoms usually occur 8 to 12 hours after ingestion, but may occur as rapidly as 30 minutes after eating high-solanine foods.
Does cooking destroy solanine?
Control. Solanine is not removed by boiling, but it can be destroyed by frying. Solanine poisoning is uncommon as cooks and the public are aware of the problem and tend to avoid green potatoes, in any case, consumption of up to 5 g of green potato per kg body weight per day does not appear to cause acute illness.How fast is solanine poisoning?
Symptoms usually occur 8 to 12 hours after ingestion, but may occur as rapidly as 10 minutes after eating high-solanine foods.Which Nightshades have the most solanine?
Solanine is an alkaloid found in plants of the nightshade family (Solanaceae), specifically tomatoes, eggplant, and most significantly, potatoes. The majority of solanine poisoning reported has arisen from the ingestion of greened potatoes.Is it OK to eat potatoes that are a little green?
Green potatoes should be taken seriously. Although the green color itself is not harmful, it may indicate the presence of a toxin called solanine. Peeling green potatoes can help reduce solanine levels, but once a potato has turned green, it's best to throw it away.Does solanine accumulate in body?
Most people would consider some as health foods; however, most are unaware that they all contain a dangerous neuro-toxin that accumulates in the body called alpha-solanine.Does solanine accumulate?
There are indications that alpha-solanine and other potato glycoalkaloids can accumulate in tissues. Solanine "poisoning" has a variety of symptoms. These symptoms may include: nausea, diarrhea, abdominal cramps, fever, headache, weak pulse, rapid breathing, hallucinations, delirium, and induce a coma.Do blueberries contain solanine?
Blueberries contain solanine alkaloid like nightshade plants, though they aren't technically a nightshade plant. Blueberries are often touted as a superfood because many believe they contain cancer-preventing ingredients. They're high in antioxidants, which are known to reduce inflammation.Is it OK to eat potatoes with sprouts?
By Leah Brickley for Food Network KitchenThe short answer is yes. Potatoes that have sprouted are still OK to eat, but only once you've removed the sprouts.