Is Strophanthin K vegetarian?

Strophanthin K (k-strophanthin) is a cardenolide glycoside found in the ripe seeds of Strophanthus kombé and related plants, as well as in lily of the valley (Convallaria). It is an analogue of ouabain and its aglycone is k-strophanthidin.

An ingredient is considered vegetarian if it avoids components derived from killing an animal.

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