Kristalose 20 grams 2 x daily for constipation. is this safe and a good dose? any side effects? i have svt/wpw syndrome.

Constipation: Constipation in an otherwise healthy person is usually due to inadequate fiber and fluid intake, and is especially prevalent in Western society due to the widespread use of processed foods combined with a high intake of non-vegetarian foods. Adding fiber supplements e.g. Benefiber, Metamucil, Konsyl and Aloe Vera helps. Lactulose also helps by fighting the colon's effort to dehydrate the stool.