Disclosed are alginate formulations that help protect digestive enzymes in the formulations from denaturation during passage through the acidic stomach environment, and from other sources, following ingestion. The formulation changes consistency to permit release of the enzymes in the less-acidic gut. They contain monovalent alginate salts (sodium, potassium and ammonium alginate) but are designed to not include significant quantities of compounds which would generate divalent ions and thereby convert the monovalent alginate to a divalent alginate when exposed to aqueous solution. A buffering agent that does not react with the digestive enzymes or the monovalent alginate, and which does not generate divalent ions on exposure to aqueous solution, can be included. A chelating agent which binds divalent ions may be administered with the formulation. Additionally, the formulation may be admixed with inert excipients suitable for oral delivery. It is preferable that the ingredients are dried before formulation.
