Continuous hiccups are generally due to irritation of diaphragm, sometime due to either severe gastritis and/or acid reflux with hiatal hernias. Penrose DSR was a right choice to take and Nexpro is a similar alternative. However, you would need additional medicines to curb your hiccups. Unfortunately, those medicines can't be prescribed on a public platform and without formal detailed clinical discussion. You may meet a doctor in person or online and get s formal consult for the same.
Next Steps
patient needs to meet an upper GI doctor for further management.