1. Passmore AP, Wilson-Davies K, Flanagan PG, et al. Chronic constipation in long stay elderly patients: a comparison of lactulose and senna-fiber combination. BMJ 1993; 307:769–71.
2. Ewerth S, Ahlberg J, Holmstrom B, et al. Influence on symptoms and transit-time of Vi-SiblinR in diverticular disease. Acta Chir Scand Suppl 1980;500:49–50.
3. Olson BH, Anderson SM, Becker MP, et al. Psyllium-enriched cereals lower blood total cholesterol and LDL cholesterol, but not HDL cholesterol, in hypercholesterolemic adults: results of a meta-analysis. J Nutr 1997;127:1973–80.
4. Anderson JW, Davidson MH, Blonde L, et al. Long-term cholesterol-lowering effects as an adjunct to diet therapy in the treatment of hypercholesterolemia. Am J Clin Nutr 2000;71:1433–8.
5. Romero AL, Romero JE, Galaviz S, Fernandez ML. Cookies enriched with psyllium or oat bran lower plasma LDL cholesterol in normal and hypercholesterolemic men from Northern Mexico. J Am Coll Nutr 1998;17:601–8.
6. Hotz J, Plein K. Effectiveness of plantago seed husks in comparison with wheat bran no stool frequency and manifestations of irritable colon syndrome with constipation. Med Klin 1994;89:645–51.
7. Jalihal A, Kurian G. Ispaghula therapy in irritable bowel syndrome: improvement in overall well-being is related to reduction in bowel dissatisfaction. J Gastroenterol Hepatol 1990;5:507–13.
8. Prior A, Whorwell PJ. Double blind study of ispaghula irritable bowel syndrome. Gut 1987;11:1510–3.
9. Anderson JW, Allgood LD, Turner J, et al. Effects of psyllium on glucose and serum lipid responses in men with type 2 diabetes and hypercholesterolemia. Am J Clin Nutr 1999;70:466–73.
10. Eherer AH, Porter J, Fordtran JS. Effect of psyllium, calcium polycarbophil, and wheat bran on secretory diarrhea induced by phenolphthalein. Gastroenterol 1993;104:1007–12.
11. Moesgaard F, Nielsen ML, Hansen JB, Knudsen JT. High-fiber diet reduces bleeding and pain in patients with hemorrhoids. Dis Colon Rectum 1982;25:454–6.
12. Jenkins DJA, Wolever TMS, Vidgen E, et al. Effect of psyllium in hypercholesterolemia at two monounsaturated fatty acid intakes. Am J Clin Nutr 1997;65:1524–33.
13. Ganji V, Kies CV. Pysllium husk fiber supplementation to the diets rich in soybean or coconut oil: Hypocholesterolemic effect in healthy humans. Int J Food Sci Nutr 1996;47:103–10.
14. Davidson MH, Maki KC, Kong JC, et al. Long-term effects of consuming foods containing psyllium seed husk on serum lipids in subjects with hypercholesterolemia. Am J Clin Nutr 1998;67:367–76.
15. Kempster PA, Wahlqvist ML. Dietary factors in the management of Parkinson’s disease. Nutr Rev 1994;52:51–8 [review].
16. Ashraf W, Pfeiffer RF, Park F, et al. Constipation in Parkinson’s disease: objective assessment and response to psyllium. Mov Disord 1997;12:946–51.
17. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs, and Cosmetics, 2d ed. New York: John Wiley & Sons, 1996, 427–9.
18. Voderholzer WA, Schatke W, Mühldorfer BE, et al. Clinical response to dietary fiber treatment of chronic constipation. Am J Gastroenterol 1997;92:95–8.
19. Anderson JW, Allgood LD, Turner J, et al. Effects of psyllium on glucose and serum lipid response in men with type 2 diabetes and hypercholesterolemia. Am J Clin Nutr 1999;70:466–73.
20. Oson BH, Anderson SM, Becker MP, et al. Psyllium-enriched cereals lower blood total cholesterol and LDL cholesterol, but not HDL cholesterol, in hypercholesterolemic adults: Results of a meta-analysis. J Nutr 1997;127:1973–80.
21. Davidson MH, Dugan LD, Burns JH, et al. A psyllium-enriched cereal for the treatment of hypercholesterolemia in children: A controlled, double-blind, crossover study. Am J Clin Nutr 1996;63:96–102.
22. Anderson JW, Davidson MH, Blonde L, et al. Long-term cholesterol-lowering effects as an adjunct to diet therapy in the treatment of hypercholesterolemia. Am J Clin Nutr 2000;71:1433–8.
23. Florholmen J, Arvidsson-Lenner R, Jorde R, Burhol PG. The effect of Metamucil on postprandial blood glucose and plasma gastric inhibitory peptide in insulin-dependent diabetics. Acta Med Scand 1982;212:237–9.
24. Rodriguez-Moran M, Guerrero-Romero F, Lazcano-Burciaga G. Lipid- and glucose-lowering efficacy of plantago psyllium in type II diabetes. J Diabetes Complications 1998;12:273–8.
25. Anderson JW, Allgood LD, Turner J, et al. Effects of psyllium on glucose and serum lipid response in men with type 2 diabetes and hypercholesterolemia. Am J Clin Nutr 1999;70:466–73.
26. Fernandez-Banares F, Hinojosa J, Sanchez-Lombrana JL, et al. Randomized clinical trial of Plantago ovata seeds (dietary fiber) as compared with mesalamine in maintaining remission in ulcerative colitis. Am J Gastroenterol 1999;94:427–33.
27. Blumenthal M, Busse WR, Goldberg A, et al. (eds). The Complete Commission E Monographs: Therapeutic Guide to Herbal Medicines. Boston, MA: Integrative Medicine Communications, 1998, 190–2.
28. Foster S. Herbs for Your Health. Loveland, CO: Interweave Press, 1996, 74–5.
29. Blumenthal M, Busse WR, Goldberg A, et al. (eds). The Complete Commission E Monographs: Therapeutic Guide to Herbal Medicines. Boston, MA: Integrative Medicine Communications, 1998, 190–2.