Because of the rapid expansion of available therapeutic agents to treat diabetes, the pharmacist's role in caring for diabetic patients has expanded. The pharmacist can educate the patients about the proper use of medication, screening for drug interactions, explain monitoring devices, and make recommendations for ancillary products and services.

The pharmacist, although not the health care professional to diagnose diabetes, is important in helping the patient maintain control of their disease. The pharmacist can monitor the patient's blood glucose levels and keep a track of it. During their contact, the patients can ask the pharmacist any questions they did not ask the physicians and can get further information regarding diabetes. The pharmacist can also counsel the patients regarding insulin administration regularly so that the onset of complications can be postponed by having tight glycemic control. Another important role of pharmacist is always being available to answer the questions of the patients. Overall, it is the pharmacist's role to help a diabetic patient in the best possible way to cope with their disease.

Essential components of diabetic counseling

Since diabetes is a chronic complication affecting the diabetic patient at various levels, the counseling should focus on the nature of the disease, lifestyle modifications, medications, and acute and chronic complications.

I. Counseling regarding the disease: The diabetic patients should be explained that the disease is lifelong, progressive and needs necessary modifications in the lifestyle pattern. They should also stress upon the importance of pharmacotherapy, especially the need for strict compliance with the prescribed medication. The patients should be also explained that the disease may affect the quality of life if not well controlled.

II. Counseling regarding lifestyle modifications: While counseling regarding the life style modifications, the pharmacist should focus on the key areas including diet, exercise, smoking and alcohol intake.

A. Diet: Dietary control is the mainstay of treatment in type 2 diabetes and an integral part in type 1 diabetes. Among the dietary counseling, importance should be given for the dietary content including carbohydrate, fat and fiber intake.

Carbohydrates: The blood glucose level is closely affected by the carbohydrate intake. Daily intake should be kept fairly constant and the amount given should be appropriate to the level of physical activity. Most young people will require 180 g of carbohydrate per day, whereas 100 g may suffice for an elderly patient. If fiber rich food such as whole meal bread, jacket potatoes, etc. are eaten, then the carbohydrate content of the diet make up to 50% to 55% of the calories. People with diabetes should limit their sugar intake, but total exclusion of sugar from the diet is impractical and unnecessary. Fat: Since there is an increased risk of death from coronary artery disease in diabetics, it is wise to restrict saturated fats and to substitute them with unsaturated fats. Furthermore, obesity is a major problem in diabetes, and fats contain more than twice the energy content per unit weight than either carbohydrate or proteins. More severe restrictions may be indicated for individuals with hypercholesterolemia. Fiber: Dietary fiber has two useful properties. Firstly it is physically bulky and increases satiety. Secondly, fiber delays the digestion and absorption of complex carbohydrates, thereby minimizing hyperglycemia. For an average person with NIDDM, 15gm of soluble fiber (from fruits, pulses and vegetables) is likely to produce a 10% improvement in fasting blood glucose, glycated hemoglobin and low- density lipoprotein cholesterol.²¹

B. Exercise and physical activity: Exercise can help to promote weight loss and maintain ideal body weight when combined with restricted caloric intake. In type 2 diabetes, the desired level of exercise is 50% to 80% of maximal uptake of oxygen three to four times a week. In type 1 diabetes, care must be taken to have adequate metabolic control prior to exercise and to monitor blood glucose before and after exercise. Exercise is not recommended if the patient has poorly controlled labile blood glucose level or is at increased risk of diabetic complications. Strenuous exercise is not wise in patients prone to develop hypoglycemia.²²

A standard recommendation for diabetic patients, (as for nondiabetic individuals), is that exercise should include a proper warm-up and cool- down period. A warm up should consist of 5-10 min of aerobic activity (walking, cycling, etc.) at a low intensity level. The warm-up session is to prepare the skeletal muscles, heart, and lungs for progressive increase in exercise intensity. After a short warm- up, muscles should be gently stretched for another 5- 10 min. Primarily, the muscles used during the active exercise session should be stretched, but warming up all muscle groups is optimal. The active warm up can either take place before or after stretching. Following the activity session, a cool-down should be structured similarly to the warm-up. The cool- down should last about 5- 10 min and gradually bring the heart rate down to its pre- exercise level.²³

C. Alcohol intake: Even if the blood glucose of the patient is well controlled, modest amount of alcohol will significantly alter blood glucose levels. In general, the same guidelines of alcohol use applicable to the general public apply to patients with diabetes.²¹

D. Smoking: People with diabetes, especially those over age 40 years, who smoke and have high blood pressure and cholesterol, are at a higher risk for cardiovascular problems. When the large blood vessels (arteries) are blocked, heart attack and stroke often result. This hardening or blockage may also occur in the small arteries that supply blood to the legs and feet. Smoking can also lead to serious complications like infections, ulcers, gangrene, and even amputations. Pharmacist should counsel patients regarding the evil effects of smoking and educate the patients regarding the various strategies to stop smoking. Emphasise should be laid on the pharmacological measures to stop smoking.

III. Counseling regarding medications: Though lifestyle modifications play an important role in diabetes management, it is well established by land mark studies that the chronic complications can be prevented by strict glycemic control. Hence, the pharmacist has an immense role in counseling diabetic patients regarding the drugs. Counseling should be emphasized for oral anti diabetic agents as well as for insulin.

1. Oral hypoglycemic agents (OHAs): If the patient is diagnosed with Type 2 diabetes, he/ she is more likely to be prescribed OHAs. Some of the commonly prescribed oral hypoglycemic agents and the important counseling points are discussed below.

Some general principles to be followed for patients on OHAs:

The patient should be cautioned not to skip meals at any time and to follow regular eating patterns to prevent hypoglycemia. OHAs are comparatively safe drugs. However some patients may develop loss of appetite, nausea and vomiting, abdominal pain, cramps, malaise, diarrhea or weight loss. The counseling points for individual OHAs are listed in the table 1.

Table 1: Counseling points for oral hypoglycemic agents

2. Insulin: All patients with type 1 diabetes require insulin. Some patients with type 2 diabetes who initially respond to dietary modification and/ or oral anti diabetic medications eventually require insulin therapy. There are a wide variety of insulin preparations available now. These may differ in source, onset of action, time to peak effect, and duration of action. The clinician will prescribe the type of insulin which suits an individual best. Some of the counseling points for patients on insulin is listed in Table 2.

Table 2: Counseling points for insulin

IV. Counseling regarding acute complications: Though rare and not directly linked with the quality of life, the acute complications of diabetes can be morbid if not treated properly. The pharmacist should focus on strategies to prevent the occurrence of the acute complications and if they have occurred the methods to overcome and to manage the same. Some of the acute complications of diabetes are discussed below.

1. Hypoglycemia: It is a condition caused by abnormally low level of blood glucose.

Hypoglycemia is caused by taking too much of certain diabetic medicines, missing a meal or delaying a meal, exercising more than usual, or drinking alcohol. The symptoms can be classified as initial, intermediate and advanced symptoms. Initial symptoms may start with sweating, tremulousness, nausea and vomiting, dizziness, mood change, hunger, weakness and progress to the intermediate symptoms of confusion, poor coordination, headache and double vision. The advanced symptoms are unconsciousness and seizures.

The management of hypoglycemia includes taking half a cup of any fruit juice, 2 or 3 glucose tablets, 2 tablespoons raisins, 1 or 2 teaspoons of sugar or honey, half cup of regular soft drink or liquid concentrated glucose. For advanced hypoglycemia, medical intervention is needed with glucagon 1 mg subcutaneously or intramuscularly.²⁴

Hypoglycemia can largely be prevented by taking antidiabetic medications properly, eating regular meals, and regular checking of blood glucose. Table 3 lists the summary of counseling points for preventing hypoglycemia.

Table 3 Counseling regarding hypoglycemia

2. Diabetic keto acidosis (DKA): DKA is a serious complications characterized by hyperglycemia, elevated serum ketones, and an anion gap metabolic acidosis. It mainly affects the individuals with type 1 DM but may also affect type 2 diabetes patients in response to acute stress.

The risk factors include extremes of age, poor glycemic control, poor socioeconomic status, non-compliance etc. In general, insulin omission or non-compliance is identified as an important contributing factor for development of DKA. ²⁵ The pharmacist can counsel the patients regarding the strategies to prevent the occurrence of DKA.

3. Non Ketotic Hyperosmolar Syndrome (NKHS): It is a constellation of severe hyperglycemia, dehydration, and hyperosmolarity in the absence of severe ketosis. It commonly occurs in elderly patients with type 2 DM. Among the various risk factors for NKHS, advanced age, female gender, acute infection and non-compliance are considered important. Hence counseling regarding the important of compliance can be helpful in reducing the occurrence of NKHS.

V. Counseling regarding chronic complications: Since diabetes is a chronic illness and the chronic complications of diabetes can adversely affect the quality of life, these complications should be emphasised. It is well established that the chronic complications of diabetes can be prevented by strict compliance and suitable lifestyle modifications. Some of the chronic complications and the role of pharmacist in counseling the patients regarding these complications are mentioned below.

Diabetic neuropathy: It is characterized by nerve damage caused by chronic high blood glucose levels. Neuropathy can lead to loss of pain or touch sensations on the feet. It can also cause pain in legs, arms or hands. Nerve damage can progress slowly and most of the time the patients may not even be aware that they have nerve problems. Hence regular check ups to rule out diabetic neuropathy is essential. For prevention of diabetic neuropathy the blood glucose and blood pressure should be kept as close to normal as possible. The other precautions include stopping/limiting alcohol intake, regular checking of feet every day and quitting the smoking. Diabetic retinopathy: Retinopathy is a disorder of the eye that occurs in majority of the adults with diabetes. The patient suffering from retinopathy may complain of blurring of vision, seeing black spots, flashing lights etc. Once detected proper treatment of diabetes can reduce the progression of retinopathy. Diabetic nephropathy: Nephropathy (disorder of the kidney) is one of the potential life threatening complications of diabetes. Poor control of diabetes is associated with enlargement of the kidneys and impairment in their function. The development and progression of nephropathy in diabetics can be delayed by tight glycemic control.²⁶Infections: Many infections are seen commonly in diabetic patients. This is an indication of poor diabetes control. Infections at mild stages, if not treated, can lead to life threatening sepsis in these patients.

VI. Counseling in special populations: Since the progression and the management pattern of diabetes vary significantly among different populations, the pharmacist should also tailor his counseling pattern according to the population. Some of the special populations with diabetes are mentioned below with the outline of the counseling in these patients.

Elderly: Elderly diabetic patients usually have various other comorbid conditions like hypertension, hyperlipidemia etc. They may also have some degree of psychiatric imbalance. The counseling in these patients should also address the emotional impairment due to diabetes. Children: Children, especially the type-1 diabetes patients, require several special precautions. In addition to other essential counseling points, the pharmacist should also focus on the administration time of insulin during school days, storage of insulin in the school, risk of hypoglycemia while playing etc. Pregnancy: Since elevated blood glucose is associated with congenital abnormalities, the pregnant patients should be asked to have strict control over the blood glucose. Multiple disorders: Patients with multiple diseases need special counseling for those diseases other than diabetes. Patients with underlying cardiac problems should be cautioned that they may not experience pain during MI and hence should be advised to have regular cardiac checkup. Frequent traveling: Diabetes patients who travel frequently should be advised regarding the use of insulin pen. They should be also counseled regarding the importance of food plan during their journey and the possibility of hypoglycemia. They should be warned not to neglect even a simple infection as it may turnout to be fatal.

VII. Counseling regarding self Monitoring of Glucose: With the availability of Blood glucose monitoring devices for the monitoring of blood glucose, patients can monitor glucose levels more frequently and have a control over blood glucose. Pharmacist can play a vital role in educating the patients regarding the use of blood glucose monitors. Pharmacists can help right from choosing a proper glucose monitor, training them in proper use of glucose meters. Pharmacist can explain the significance of various blood glucose levels and maintaining proper blood glucose levels. As the patients gain confidence in measuring the blood sugar, managing diet and medications better outcomes can be expected.

VIII. Miscellaneous: Besides the above mentioned topics, the pharmacist should also provide additional counseling for the patients who need it. Some of the additional points to be counseled are mentioned below.

1. Foot care: Meticulous foot care and the choice of suitable foot wear can prevent serious damage which is likely to occur in diabetics.

Tips for foot care: Wash feet daily with lukewarm water and soap, just as washing hands

• Dry feet well, also between the toes
• Keep the skin supple with a moisturizing lotion
• Use soft socks or stockings, which must neither be too big nor too small
• Never walk barefoot- neither indoors nor outdoors
• Examine the shoes every day for cracks, pebbles, nails and other irregularities which may irritate the skin
• A brisk walk everyday stimulates the circulation and makes the patient feel much better.

2. Eye care: Individuals with diabetes could have underlying eye problems that might not be noticed by the patient early. It is important to recognize eye problems early while they can be treated to prevent blindness.

Tips for eye care: For people with type 2 diabetes should have an eye exam every year, women planning to become pregnant should have an eye exam before becoming pregnant. The patient should keep the blood glucose and blood pressure levels as close to normal as possible. The should be advised to inform the doctor right away in case of any problems like blurring of vision or seeing dark spots, flashing lights, or rings around lights.

3. Oral hygiene: People with diabetes are prone to many changes in the mouth such as dry mouth, burning sensations, painful sores, and loss of taste and coating on the tongue. The most common oral complication of diabetes is gum (periodontal) disease. If un-treated, gum disease can be very serious and lead to tooth loss. Early signs of gum disease include long term bad breath or bad taste, swollen, red, tender, shrinking or bleeding gums, pus between teeth; changes in bite, teeth position or denture fit or tooth loss.

Tips for oral hygiene: Brush teeth after every meal and before bedtime use a soft bristled brush, brush all surfaces of all teeth, lightly brush the tongue, massage gums lightly with finger or brush. The patient should be advised to visit the dentist every three months for cleaning, polishing and inspection.