First Aid of Low Blood Pressure

If you have an underlying medical problem that causes low blood pressure, seek treatment for the underlying condition. For many people, chronic low blood pressure can be effectively treated with diet and lifestyle changes.
Initially, you must follow these;

• Eat a diet higher in salt.
• Decrease your intake of caffeine.
• Drink lots of nonalcoholic fluids -- a minimum of eight glasses per day. Sports drinks that are high in sodium and potassium are recommended, especially during exercise or in hot weather.
• Drink more fluids during hot weather and while sick with a viral illness, such as a cold or the flu.
• Have your doctor evaluate your prescription and over-the-counter medications to identify any that may be causing your symptoms.
• Get regular exercise to promote blood flow.
• Be careful when rising from lying down or sitting. To improve circulation, pump your feet and ankles a few times before standing up. Then proceed slowly. When getting out of bed, sit upright on the edge of the bed for a few minutes before standing.
• Elevate the head of your bed at night by placing bricks or blocks under the head of bed.
• Avoid heavy lifting.
• Avoid straining while on the toilet.
• Avoid prolonged exposure to hot water, such as hot showers and spas. If you get dizzy, sit down. It may be helpful to keep a chair or stool in the shower in case you need to sit; to help prevent injury, use a nonslip chair or stool designed for use in showers and bath tubs.
• To avoid problems with low blood pressure and lessen episodes of dizziness after meals, try eating smaller, more frequent meals. Rest after eating. Avoid taking drugs to lower blood pressure before meals.If needed, use elastic support (compression) stockings that cover the calf and thigh. These may help restrict blood flow to the legs, thus keeping more blood in the upper body.