Reg. threptin biscuits and the sugar content?

hi friends....i m a prego in my 33rd week and my gyne advised me to go for threptin biscuits...bt i m bit dubious about takng it as it tastes too sweet....does it have high sugar content....i m this worried as both my parents are diabetics in high range and i m advsied against any sweets or sugar due to threat of gestational diabetes at this time....can anyone help plz....is it gud for diabetics too as my mom always likes it...