Nature's Sunshine Psyllium Hulls are a bulk producing laxative for the maintenance of regularity, while indirectly being of benefit to those who suffer from constipation-induced haemorrhoids. Psyllium hulls are hydrophilic bulking agents which swell 8-14 times their original size in water. Assists with mild constipation due to inadequate fibre intake. Psyllium is appropriate to take long term.