From the FDA Drug Label
Adults 12 yrs. & older 1 packet in 8 oz of liquid at the first sign of irregularity. 6 – 11 yrs. 1/2 packet in 8 oz of liquid, up to 3 times daily Under 6 yrs. Consult a doctor children 16 years of age or under: ask a doctor adults and children 17 years of age and older:
- Fiber laxatives can be used from 6 years old with a reduced dose for psyllium, and from 17 years old for polyethylene glycol.
- For children under 6 years, a doctor should be consulted for psyllium.
- For children under 17 years, a doctor should be consulted for polyethylene glycol 1 2
From the Research
Fiber laxatives can be used in children older than 2 years of age, with the recommended intake being at least their age plus 5 grams per day. This recommendation is based on the study by 3, which suggests that dietary fiber has important health benefits in childhood, especially in promoting normal laxation. The study also notes that children consume amounts of dietary fiber that appear to be inadequate for optimal health promotion and disease prevention.
When using fiber laxatives in children, it is essential to start with a low dose and gradually increase as needed, always taking them with plenty of water to prevent constipation from worsening or intestinal blockage. The products work by absorbing water in the intestines and forming a gel-like substance that softens stool and promotes regular bowel movements.
Some key points to consider when using fiber laxatives in children include:
- Consulting a healthcare provider before using any laxative in children under 6 years old
- Using over-the-counter fiber laxatives like Metamucil (psyllium), Citrucel (methylcellulose), and Benefiber (wheat dextrin) in adults and older children
- Addressing underlying causes of constipation through dietary changes, increased fluid intake, and regular physical activity
- Monitoring for potential side effects, such as abdominal pain, nausea, and diarrhea, although these are generally considered safe for long-term use.
It's also worth noting that the study by 4 suggests a safe range of dietary fiber intake for children is between age plus 5 and age plus 10 grams per day, which is considered safe even for children and adolescents with marginal intakes of some vitamins and minerals. However, the most recent and highest quality study, 5, does not provide a specific age recommendation for fiber laxatives, but it does suggest that polyethylene glycol 3350 is effective and safe for treating functional constipation in children from 6 months to 18 years of age.
Overall, the use of fiber laxatives in children older than 2 years of age is supported by the available evidence, and they can be a useful tool in promoting regular bowel movements and preventing constipation.