How about this? It's been around for decades, and is designed to keep the bowels moving AND fight/kill parasites, too. Mine and my husbands family have used it and recommended it for years.
Intestinal Corrective Formula # 1 by Dr.Schulze
Therapeutic action: This stimulating tonic is both cleansing, healing and strengthening to the entire gastro-intestinal system. It stimulates your peristaltic action ( the muscular movement of the colon ) and over time strengthens the muscles of the large intestine, halts putrefaction and disinfects, soothes and heals the mucous membrane lining of your entire digestive tract. This herbal tonic also improves digestion, relieves gas and cramps, increases the flow of bile which, in turn, cleans the gallbladder, bile ducts and liver, destroys Candida albicans overgrowth and promotes a healthy intestinal flora, destroys and expels intestinal parasites, increases gastrointestinal circulation and is anti-bacterial, anti-viral and anti-fungal.
Contra-indications: Do not use during pregnancy without the guidance of a health care professional.
Start with only one capsule of this formula during or just after dinner. This Formula works best when taken with food, The next morning you should notice an increase in your bowel action and in the amount of fecal matter that you eliminate. The consistency should also be softer. If you do not notice any difference in your bowel behavior today or the difference wasn't dramatic, then tonight increase your dosage to two capsules. You can continue to increase your dosage every evening by one capsule until you notice a dramatic difference in the way your bowel works. There is no limit. Most people need only 2-3 capsules but a few have needed over 30 capsules. It has taken most of us years to create a sluggish bowel, so let us be patient for a few days and increase by one capsule each day only.
This formula can be taken for a week, a month or the rest of your life. Continue to use this formula until you are having one bowel movement each day for every meal you eat, between. 2 and 4 bowel movements a day are normal. Considering all the disease and death we have because of retained fecal matter, I wouldn't worry about taking too much of this formula.