http://www.fpnotebook.com/
Fiber
Aka: Fiber, Dietary Fiber, Roughage, Bulk Laxative, Bulk-Forming agents, Psyllium, Metamucil, Methylcellulose, Citrucel, Polycarbophil, Fibercon
- Indications
- Constipation
- Irritable Bowel Syndrome
- Diverticulosis
- Hemorrhoids
- Hypercholesterolemia
- Obesity
- Physiology
- Dietary Fiber improves stool bulk and transit time
- Dietary Fiber lowers serum Cholesterol
- Precaution
- Fiber content listed below is approximate
- Various texts list different fiber per serving
- Adverse Effects
- Use with >1.5 Liters/day non-caffeinated fluid
- Poorly tolerated in atonic colon (e.g. Megacolon)
- Bloating is common in larger doses initially
- Reduced by slowly increasing fiber intake
- Drug Interactions
- May interfere with absorption of medications
- Do not take medications at the same time as Psyllium
- Space Psyllium several hours apart from medications
- Agents known to be affected
- Carbamazepine (Tegretol)
- Etman (1995) Drug Dev Ind Pharm 21:1901-6
- Lithium
- Perlman (1990) Lancet 335:416
- Preparations: Dietary Fiber Sources
- Whole grain cereals or breads
- All-Bran or 100% Bran Cereal (>8 grams per serving)
- Wheaties (2.6 grams per serving)
- Shredded Wheat (6 grams per serving)
- Grits (5 grams per serving)
- Grape-nuts (5 grams per serving)
- Fresh fruits
- Raspberries (4.5 grams per serving)
- Fruits with 1-3 grams fiber per serving
- Apple with peal
- Orange
- Peach
- Pear
- Strawberries
- Fruits with negligible fiber
- Grape-fruit has only 0.6 grams fiber per serving
- Apple juice has no fiber content
- Vegetables (raw better than cooked)
- Beans (>8 grams per serving)
- Kidney beans
- Lima beans
- Navy beans
- Baked beans
- Peas (6 grams per serving)
- Corn on the cob (6 grams per serving)
- Parsnips (6 grams per serving)
- Lentils (4 grams per serving)
- Broccoli (3 grams per serving)
- Baked Potato with skin (3 grams per serving)
- Other vegetables with 1-2 grams fiber per serving
- Beets
- Cabbage
- Carrots
- Celery
- Corn
- Squash
- Green beans
- Turnips
- Other sources
- Whole wheat bread (1.3 grams per serving)
- Bulk-Forming agents
- Psyllium (Metamucil): 10 grams per day
- Dose: 1-2 tsp in 8 ounces of water or juice PO tid
- Methylcellulose (Citrucel): 6 grams per day
- Dose: 2 grams in 8 ounces liquid PO tid
- Calcium Polycarbophil (Fibercon)
- Dose: Two 625 mg tablets PO tid
- Synthetic bulk agent containing polyacrylic acid
- Dietary sources with as much fiber at 10% of cost
- Wheat bran, oat bran or all-bran cereal
- Lima, Navy, Kidney and baked beans
- References
- Brody (1981) Nutrition Book, p. 147
- Cheskin in Barker (1995) Ambulatory Medicine, p. 479