Parvatham female age 65, t3 (liothyronine) 0.51, t4 6.81, tsh 26.81 how much thyroxine has to take daily?

Depends . . .: Initial dose of Levothyroxine to treat hypothyroidism is a mix of both art & science as it depends upon several factors such as age, weight, presence/absence of heart disease, etc. Check out http://www.globalrph.com/thyroid_calc.htm for starting point. Try to get same brand name each & every time as body is very sensitive to minor variations in dosing which can occur btwn generics despite same dos