Hi & Welcome. I can appreciate your concern. 1. The usual dose in children between 1-2 years of age is 10 mL (200 mg) of Zentel suspension as a single dose which can be repeated after 2 weeks. 2. Generally it s well tolerated, however it may cause stomach upset, headache or allergic reaction although reported less frequently. 3. Please see it to that person hygiene is equally important in eradicating this infestation. Like her nails should be trimmed, she should be advised to wash her hands after the toilet, her clothings should be washed separately and air dried. Hope this will help her.