electrical signal therapy (est) safe | effective | non-invasive This device SHOULD NOT be used if you have: 1 ThrombophiebitisManifest thrombosisCardiac demand pacemakerAcute danger of hemorrhageDisturbances in cardia rhythmEpilepsyTrans-thoracic applications how to CONTACT US Call us directly at 210-375-3318 Fill out our quick Appointment Request