Respected user, hi I evaluated your query in depth . * Domperidone can be taken very safely ( if there is no sensitivity to molecule) for control of nausea during GI infection . Pan D has to be taken with 2 sips of water on empty stomach morning & evening for desired period of time . * Orni is also known to give metallic mouth & nausea . once its dose is over , within next 24-48 hrs its induced nausea will disappear . * I recommend certain extra precautions for getting better results - drink plenty of liquids in sessions preferably boiled water, coconut water, lemon juice , butter milk - small amount of light diet at intervals - avoid prolong fasting / overeating - avoid oily / spicy / non veg / beverages / junk foods / commercial product biscuits , ice creams etc - avoid stress / anxiety - have sound sleep of 7-8 hrs regularly - avoid smoking / alcohol / any abuse substances if any Hope this clears your query . Welcome for any further assistance . Thanks for using Health care magic & giving me an opportunity to assist . Wishing you fine recovery from the same . Regards dear take care .