True.
Naturally hyperthyroid people have rT3 levels severalfold above normal.
You'll need to take a little T4 to avoid a nasty high T3 low T4 condition and to cut and split the caps powder as 75 mcg can be too much for a beginner if taken at once.
Pharma T3 now comes in 5 mcg tabs so they can easily split the daily dose.