Oyster Mushroom — USDA FoodData Central nutrition facts (per 100g)

| Nutrient | Amount per 100g |
| --- | --- |
| Ash | 0.732 g |
| Beta-glucan | 1.92 g |
| Beta-sitostanol | 0 mg |
| Beta-sitosterol | 0 mg |
| Biotin | 7.04 µg |
| Calcium, Ca | 0 mg |
| Campesterol | 0 mg |
| Carbohydrate, by difference | 6.94 g |
| Copper, Cu | 0.106 mg |
| Delta-5-avenasterol | 0 mg |
| Delta-7-Stigmastenol | 0 mg |
| Energy | 41 kcal |
| Energy (Atwater General Factors) | 41 kcal |
| Energy (Atwater Specific Factors) | 33.3 kcal |
| Ergosta-5,7-dienol | 8.43 mg |
| Ergosta-7-enol | 1.31 mg |
| Ergosta-7,22-dienol | 0.88 mg |
| Ergosterol | 58.5 mg |
| Ergothioneine | 14 mg |
| Fiber, total dietary | 2.85 g |
| Folate, total | 63.1 µg |
| Glutathione | 17.5 mg |
| Histidine | 0.574 g |
| Iron, Fe | 0.698 mg |
| Isoleucine | 0.923 g |
| Leucine | 1.51 g |
| Lysine | 1.33 g |
| Magnesium, Mg | 13.9 mg |
| Manganese, Mn | 0.086 mg |
| Methionine | 0.356 g |
| Niacin | 5.75 mg |
| Nitrogen | 0.464 g |
| Phenylalanine | 0.989 g |
| Phosphorus, P | 86.2 mg |
| Potassium, K | 282 mg |
| Protein | 2.9 g |
| Riboflavin | 0.244 mg |
| Selenium, Se | 1.38 µg |
| Sodium, Na | 1.13 mg |
| Stigmasterol | 0 mg |
| Thiamin | 0.07 mg |
| Threonine | 1.17 g |
| Total lipid (fat) | 0.188 g |
| Tryptophan | 0.381 g |
| Valine | 1.65 g |
| Vitamin B-6 | 0.099 mg |
| Vitamin D (D2 + D3) | 0.041 µg |
| Vitamin D (D2 + D3), International Units | 1.62 IU |
| Vitamin D2 (ergocalciferol) | 0.041 µg |
| Vitamin D4 | 0 µg |
| Water | 89.2 g |
| Zinc, Zn | 0.684 mg |

Values are raw as published by USDA at the 100g basis — not rounded per 21 CFR 101.9(c) label-declaration rules, and 100g is USDA's publication basis, not a serving size any US nutrition label declares against.

Source: USDA FoodData Central, FDC ID 1999627, usda_ff (released 2026-04-30). https://bettermenu.live/tools/ingredient-search/us/foods/oyster-mushroom-1999627/