What can i do if my mom has very low blood pressure, is she in danger?

It depends on other: Related conditions or symptoms. If she has other symptoms like dizziness, chest pain, fatigue, shortness of breath, etc, bring her to quick care or er for a thorough evaluation. She needs to follow up with her dr. If she is taking blood pressure meds, she may need to hold off or cut down on the dose. Discuss these things with her dr.