Nutritionally speaking, the potato is a good source of energy (75kcal/100g). Since it is consumed as basic food, it also provides a high proportion of folate, vitamin C, thiamine (B1), potassium and iron, significantly contributing at the same time to protein ingestion. In fact, if we eat enough potatoes as to fulfil the energy needs, we will obtain a balanced quantity of nutrients, except for liposoluble vitamins. Among the phytochemicals that we found in potatoes are the coumarins and anthoxanthins. The consumption of potatoes with greenish colour must be avoided, since they contain toxic glycoalkaloids.

The potato extract is recommended for diseases of the digestive apparatus like ulcers, gastritis, etc. Starch, on the other hand, is indicated for gumboils, sores, burns, eruptions, etc.

The potato is 75% water and 15% starch, 2% proteins and only 0.1% fats. It contains carbohydrates, potassium, calcium, iron, magnesium, phosphorus, starch and a great quantity of vitamin C. It is also rich in complex B, B1 and B6 vitamins and pantothenic acid.

Contrary to what most people think, the potato is an energetic food allowed for diabetic people and obese people and it favours the intestinal functions acting as a dead weight. It is also considered an antiulcer and healing product.

The raw extract is recommended in cases of dyspepsia, gastric and duodenum ulcers, gastritis, hepatitis and biliary lithiasis, constipation, haemorrhoids, glycosuria and diabetes. This use is due to the diuretic and emollient properties, it sooths the digestive mucous and it is antispasmodic.

Starch, with its qualities as local emollient, is suitable for gumboils, erysipelas, burns, sores, ulcers in the legs, rashes and cracks.