Yes, Thank You. My 81 Year Old Mother Had Vomiting

Yes, thank you. My 81 year old mother had vomiting and nausea for 3 days, took her to the ER on the 2nd day and all of her tests came back ok, they suspected something viral. No fever, body aches, coughing, sore throat nothing other than nausea and vomiting. She is a heart patient but her enzymes and ekg and stress all came back ok She also takes Amnitiza & MiraLax for constipation she's had most of her life. The hospital sent her home with the generic Reglan to take until symptoms went away. She hasn't had her laxatives and hasn't had a bowel movement since Saturday. Would it be ok for her to start her regimen for her bowels again or would those two medications cause a reaction with the Reglan? She's also on High Blood pressure meds as well which she is still taking along with her heart medicine at night.