Non-medicated, therapeutic skin creams for the treatment of menstrual cramps, preeclampsia, eclampsia, premature labor contractions, spastic vascular diseases including Raynauds Syndrome, muscle pains, muscle cramps, muscle spasticity or rigidity, stomach cramps, nuchal headaches, myofascial pain syndrome, leg muscle pain including muscle pain stemming from the use of statin medicines, restless leg syndrome, fibromyalgia pain, spasms and obstruction; coronary artery spasm and obstruction; urinary bladder spasm; tendonitis; sprained joints (e.g., sprained tendons and ligaments); plantar fasciitis; and pain due to muscle cramps and spasms in spinal stenosis and herniated disc