laxative



References: Laxative






Ann Clin Psychiatry. 1995 Sep;7(3):119-25.
Assessment of changes in both weight and frequency of use of medications for the treatment of gastrointestinal symptoms among clozapine-treated patients.

John JP, Chengappa KN, Baker RW, Gupta B, Mortimer MT.

Western Psychiatric Institute and Clinic, Pittsburgh, Pennsylvania, USA.

Clozapine has an unusual profile of adverse effects; among them, gastrointestinal (GI) side effects are important management concerns. The charts of patients in a state hospital who received clozapine for at least 3 months were reviewed. We compared the pre- and post-clozapine weights and changes in frequency and intensity of use of drugs prescribed for gastrointestinal symptoms for each subject (n = 99). There were statistically significant increases in the use of antacids (p < 0.02) and both bulk and non-bulk laxatives (p < 0.05, p < 0.03). Seventy-three percent of patients gained weight, of whom 27% gained over 10% body weight. This study confirms clozapine's association with weight gain, constipation, and upper GI symptoms. The literature concerning weight gain, and the mechanisms underlying GI adverse effects were reviewed.

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8646271&dopt=Abstract constipation laxative



Prof Care Mother Child. 1995;5(6):161-2.
Remedies for common family ailments: 9. Haemorrhoids.

Sinclair A.

Haemorrhoids or piles are varicosities in the anal canal caused by local pressure. Sometimes they prolapse. Symptoms may include itching, discomfort, pain and bleeding. Haemorrhoids are common in pregnancy. Constipation aggravates piles, so a healthy diet with plenty of water and fibre is advisable. Some sufferers need an appropriate laxative as well. Cleanliness of the anal area is important. Proprietary moist toilet tissues are sold for this purpose and can be soothing and helpful. Relief of symptoms is by haemorrhoid creams, ointments and suppositories. Active ingredients typically include antiseptics, anti-inflammatories, anti-pruritics and local anaesthetics. Many are available from pharmacies without a prescription. If in doubt, always refer the patient to a doctor. For example, rectal bleeding may be due to some more serious condition, or pruritus to anal thrush. In the case of children the advice of a doctor should be sought.

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8680238&dopt=Abstract constipation laxative



Gut. 1987 Sep;28(9):1112-9.
Effects of oral laxatives on colonic motor complexes in dogs.

Karaus M, Sarna SK, Ammon HV, Wienbeck M.

Department of Surgery, Medical College of Wisconsin, Milwaukee.

The effect of oral laxatives on the organisation of colonic motor complexes was investigated in four conscious dogs. Six strain gauge transducers were implanted on the colon of each dog. After a control period of two to three hours, dogs were orally dosed with 1, 2, or 4 ml/kg of castor oil, or 0.5 g/kg magnesium citrate. Oral olive oil, 4 ml/kg, was used as control. The recording was continued for another 10 hours or until defecation occurred. Each dog showed spontaneous cyclic bursts of contractions (contractile states) at all recording sites during the control period. Contractile states migrating orad or caudad over at least half the length of the colon were called colonic migrating motor complexes (CMMC). Castor oil and magnesium citrate significantly increased the period of colonic motor complexes, but olive oil had no significant effect. None of the above substances changed the percentage of orad migrating motor complexes, as compared with the control values. Periods in which colonic motor activity was completely absent for at least 60 min over at least three consecutive recording sites occurred more frequently after all of the substances. The occurrence of these periods of inhibition, however, was not a consistent feature and there seemed to be no relationship between the occurrence of inhibitory periods and defecation during the recording period. The dogs defecated within 10 hours after administration of magnesium citrate, 1, 2, and 4 ml/kg of castor oil in 12.5, 25, 37.5, and 88.8% of experiments respectively, but never with olive oil. Defecation was generally accompanied by giant migrating contractions in the colon. We conclude that oral laxatives, magnesium citrate and castor oil have a profound effect on colonic motor complexes and colonic motor activity. The period of CMMC



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