Test your blood for Diabetes.
There is no hypoglycemic effect of the guava leaves. In fact, it is often used because of its anti-hypoglycemic and anti-hyperlipidemic effects.
Hypoglycemic syndromes are classified as drug-induced or (most common)non-drug induced.
A hypoglycemic patient should not use insulin. It will drop his glucose even further.
You are well controlled, means probably you are probably taking anti diabetic medication. So hypoglycemic episode is very much expected. Please stop the anti diabetic medication.
Lists of food that are great tasting and for hypoglycemic dieters are on WebMD, Healthy Eating, Mayo Clinic, Health Diets, Hypoglycemic Diets, and Diet Help.
Insulin is the only hormone, which acts as hypoglycemic hormone. All other hormones increase the glucose level to some extent.
Your doctor would be the one to tell if you actually need to be on a hypoglycemic diet and can also tell you correctly what to eat. Lean meats, whole grains, nuts, beans and vegetables are all appropriate foods to eat in this diet.
There are many great sites for information on hypoglycemic diets, such as www.glycemicedge.com and www.hypoglycemia.asn.au. Also, check out www.hypoglycemia-diet-plan.com