Your father is having highly uncontrolled blood sugar levels inspite of taking oral anti diabetic drugs.
This may mean following things
1... He is very careless regarding his food and indulging in ver eating of calories
2... He may need different oral anti diabetic medicines or the dose of present drugs is to be increased.
3.. Over a period burn out of beta cells has taken place resulting in loss of effect of anti diabetic drugs and there may be a need of injectable insulin
What to do...
He must consult a diabetologist
and get investigated thoroughly and get his prescription of medicines revised.
Must take complete dietary precautions.
Must do regular brisk walk for 45 minutes.
Must control his blood pressure and lipid profile
Keep a regular date with the doctor.
As far as AMWAY products you mentioned,they are just supplements and in no way can control the blood sugar levels.
is a time bomb which can play havoc with your life any time.