I’ve squinted hard and it looks like that package is the 6.08 gram package that is one dose for a 1250 pound animal. The label should verify this. A 180 pound man would take roughly 1/7 of the package, not 1/3. It’s the same concentration as the ivermectin that I buy, so that isn’t a factor with this brand. If you get it wrong, the good news is Dr. Ryan Cole says it’s almost impossible to overdose on it.
Where are you buying your Ivermectin please?