When I need digestable soluble fiber this is what I use:

• HIGHLY SOLUBLE, MIXES INSTANTLY: Acacia fiber is a type of soluble fiber harvested from the sap of the Acacia tree, which is native to parts of Africa, Pakistan, and India.
• RICH IN GENTLE FIBER: Soluble fiber, as part of the diet, can help to encourage intestinal regularity.* It also acts as a prebiotic that supports the vitality of the microorganisms that help maintain a healthy GI environment.*
• INTESTINAL HEALTH*: Acacia Powder is well tolerated and can be used daily.
• GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
• Packaged in the USA by a family owned and operated company since 1968.
• During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers’ recommendations, when provided.