If bathing in gatorade would cure your cramps, I would think by now you would be all over it, so dont get hung up on the cornsyrup, unless your cramps arent that serious.
Im still gonna help ya, because I missed the part about the bp meds, does this med have a diuretic property? This may be contributing not causing your problem. Here is more information than you ever wanted to know about cramps-
the types and causes of muscle cramps:
Skeletal muscle cramps can be categorized into four major types. These include "true" cramps, tetany, contractures, and dystonic cramps. Cramps are categorized according to their different causes and the muscle groups they affect.
"True" cramps
"True" cramps involve part or all of a single muscle or a group of muscles that generally act together, such as the muscles that flex several adjacent fingers. Most authorities agree that "true" cramps are caused by hyperexcitability of the nerves that stimulate the muscles. They are overwhelmingly the most common type of skeletal muscle cramps. "True" cramps can occur in a variety of circumstances as follows:
Injury: Persistent muscle spasm may occur as a protective mechanism following an injury, such as a broken bone. In this instance, the spasm tends to minimize movement and stabilize the area of injury. Injury of the muscle alone may cause the muscle to spasm.
Vigorous activity: "True" cramps are commonly associated with the vigorous use of muscles and muscle fatigue (in sports or with unaccustomed activities). Such cramps may come during the activity or later, sometimes many hours later. Likewise, muscle fatigue from sitting or lying for an extended period in an awkward position, or any repetitive use can cause cramps. Older adults are at risk for cramps when performing vigorous or strenuous physical activities.
Rest cramps: Cramps at rest are very common, especially in older adults, but may be experienced at any age, including childhood. Rest cramps often occur during the night. While not life-threatening, night cramps (commonly known as nocturnal cramps) can be painful, disruptive of sleep, and they can recur frequently (that is, many times a night, and/or many nights each week). The actual cause of night cramps is unknown. Sometimes, such cramps are initiated by making a movement that shortens the muscle. An example is pointing the toe down while lying in bed, which shortens the calf muscle, a common site of cramps.
Dehydration: Sports and other vigorous activities can cause excessive fluid loss from perspiration. This kind of dehydration increases the likelihood of "true" cramps. These cramps are more likely in warm weather and can be an early sign of heat stroke. Chronic volume depletion of body fluids from diuretics (medicine that promote urination) and poor fluid intake may act similarly to predispose to cramps in seniors. Sodium depletion has also been associated with cramps. Loss of sodium, the most abundant chemical constituent of body fluids outside the cell, is usually a function of dehydration.
Body fluid shifts: "True" cramps also may be experienced in other conditions that feature an unusual distribution of body fluids. An example is cirrhosis of the liver, with fluid in the abdominal cavity (ascites). Similarly, cramps are a relatively frequent complication of the rapid body fluid changes that occur during artificial kidney treatment (hemodialysis).
Low blood calcium, magnesium: Low blood levels of either calcium or magnesium directly increase the excitability of both the nerve endings and the muscles they stimulate. This may be a predisposing factor for the spontaneous "true" cramps experienced by many older adults, as well as for those that are commonly noted during pregnancy. Low levels of calcium and magnesium are common in a normal pregnancy unless these minerals are supplemented to the diet. Cramps are seen in any circumstance that decreases the availability of calcium or magnesium in body fluids, such as from diuretics, hyperventilation (overbreathing), excessive vomiting, inadequate calcium and/or magnesium in the diet, inadequate calcium absorption due to vitamin D deficiency, poor function of the parathyroid gland (a tiny gland in the neck that regulates calcium balance), and other conditions.
Low potassium: Low potassium levels occasionally cause muscle cramps, although it is more common for low potassium to be associated with muscle weakness.
Tetany
In tetany, all of the nerve cells in the body are activated, which then stimulate the muscles. This reaction causes spasms or cramps throughout the body. The name tetany is derived from the effect of the tetanus toxin on the nerves. However, the name is now commonly applied to muscle cramping from other conditions, such as low blood levels of calcium and magnesium. Low calcium and low magnesium, which increase the activity of nerve tissue nonspecifically, also can produce tetanic cramps. Often, such cramps are accompanied by evidence of hyperactivity of other nerve functions in addition to muscle stimulation. For instance, low blood calcium not only causes spasm of the muscles of the hands and wrists, but it can also cause a sensation of numbness and tingling around the mouth and other areas.
Sometimes, tetanic cramps are indistinguishable from "true" cramps. The accompanying changes of sensation or other nerve functions that occurs with tetany may not be apparent because the cramp pain is masking or distracting from it.
Contractures
Contractures result when the muscles are unable to relax. The constant spasms are caused by a depletion of adenosine triphosphate (ATP), an energy chemical within the cell. This prevents muscle fiber relaxation. The nerves are inactive in this form of muscle spasm.
http://www.medicinenet.com/muscle_cramps/article.htm
borrowed info from mednet