Keep in mind that the normal blood glucose level is between 64.8-104.4 mg/dl. It is good for you to maintain your blood glucose level within the mentioned ranges.
With regards to what you can do as a pre-diabetic, there exist several ways which can be useful to prevent diabetes onset:
First of all, you have to follow a diet, made of 5-6 meals containing all the needed vitamins, minerals, proteins, fat acids, sugars and other.
Furthermore, you have to reduce the amount of sugar, fat acids and cholesterol required, because they can cause severe damages to your organism.
The elevated amount of glucose in the blood is causing elevation in the cholesterol amount, which is reason for the atherosclerosis development.
In purpose to reduce the amount of sugar in your blood and to prevent the elevation in the cholesterol level, exercise and/or keeping your body on movement is another useful option.
It is proven that running for half an hour in the morning and in the evening is really improving your physical status.
Besides this, when you are working out, the sugar in your organism is transformed in energy. In this way, you are preventing the elevation of the blood glucose and respectively, the cholesterol elevation.
With regards to
the herbs that you are taking, it is true that they are the mostly used although they are not approved by FDA, which means nobody is capable to tell you their probable side effects.
Karela is a herb which is containing Gurmarin, a molecule of which is similar to the molecule of the bovine insulin.
For your information, several years ago, the bovine insulin was used for the treatment of diabetes type one, but now the modern medicine has found a way to produce human insulin.
Methy is a herb, which cholesterol lowering effects in your body. Therefore, it is able to protect you from atherosclerosis and its consequences.
The herb named Gurmur was firstly used for weight loss purposes. However, in the last few years, this herb has shown its good effect on the glucose level in patients with diabetes type one and two.
Meanwhile, Karela is used generally in type one diabetics as it provides insulin-similar molecule for the organism, which lacks it.
On the other hand, Jamun in combination with Karela, Gumur, Methy and exercises, plus frequent blood glucose tests are ensuring you very good control of your blood sugar.
Keep also in mind to try to cope with stress, because sometimes, it can aggravate your diabetes condition or precipitating it.
At the end, I can only encourage the good actions you are taking and hoping you are not going to develop diabetes in future.