let me preface this by first stating, as in previous posts, I never recommend anyone take these pharm drugs unsupervised by medical professionals. Various risks involve severe side effects to hazards of incorrect dosage calculations. Having said this, lets practice some basic math here, no offense intended.
160 lbs at 2.2 lb per kg is 72.7 kg
the dosage and interval depends WIDELY based upon the individual parasite diagnosed, including tapeworms, and/or flukes; with dosages anywhere from 25 to 60 mg per kg in single doses or divided 2 or 3 times.
at any rate for a 25 mg per kg dose at 72.7kg
25 X 72.7 kg = 1817.5 mg NOT 180mg
the previous calculations are grossly underestimated (x10) as well is the dosage info for schisto 40-60mg/kg not 20.
Again, no offense to anyone, but lets practice some discretion and caution here folks. When you give medical advice to a stranger, they MAY just take it! And when things go direly wrong WHO will be there to bail them out?
Not knowing for what you are treating is a dangerous proposition and there is such a thing as ending up much worse off than where you started. Please, think first.