Complicated infections can start with Pyrantel 10mg/kg dose every 3 weeks. I vomited for 3 months and had to back off to drops per day. It took weeks until I could dose a std dose of 10mg/kg.
Depending on level of complication, Pyrantel can be hit a bit harder. I use Greek Yogurt to help buffer Pyrantel for first few months.
I suggest low dose 250 mg Pyrantel in fruit on the bottom yogurt, and teaspoon 12:1 extract Xanthoparmelia Scabrosa powder, mix well.
I really rely on orange juice and cream several small doses per day.