diff --git a/Sources/OpenFoodFacts/Schemas/Nutriments.swift b/Sources/OpenFoodFacts/Schemas/Nutriments.swift
index 4038bd7..f8717fb 100644
--- a/Sources/OpenFoodFacts/Schemas/Nutriments.swift
+++ b/Sources/OpenFoodFacts/Schemas/Nutriments.swift
@@ -3,7 +3,10 @@ import Units
 
 @dynamicMemberLookup
 public struct Nutriments: Codable, ObjectDebugger {
-	private var nutrients: [String: Nutrient] = [:]  // Key is accessName ( - replaced with _ )
+	private var nutrients: [String: Nutrient] = [:]
+
+	private var iterator: Dictionary<String, Nutrient>.Iterator? = nil
+	private var keys: [String] = []
 
 	public init() {}
 
@@ -254,4 +257,22 @@ extension Nutriments {
 	public var saturatedFat: Nutrient? { nutrients["saturated_fat"] }
 	public var sodium: Nutrient? { nutrients["sodium"] }
 	public var sugars: Nutrient? { nutrients["sugars"] }
+	public var calcium: Nutrient? { nutrients["calcium"] }
+}
+
+extension Nutriments: Sequence, IteratorProtocol {
+	public mutating func next() -> Element? {
+		if iterator == nil {
+			iterator = nutrients.makeIterator()
+			keys = Array(nutrients.keys).sorted()
+		}
+		guard let nextElement = iterator?.next() else {
+			iterator = nil
+			return nil
+		}
+		return (item: nextElement.key, nutrient: nextElement.value)
+	}
+
+	public typealias Element = (item: String, nutrient: Nutrient)
+
 }