Hi, Welcome to health care magic, Your dark brown color vomiting with severe acid reflux could be due to gastroesophageal reflux disease (GERD) or gastroenteritis or acute bowel obstruction which needs immediate medical attention and the diagnosis should be done on urgent basis,so that we can plan further course of treatment. You should undergo routine blood works,electrolytes,ESR,ultrasound of abdomen and upper GI endoscopy. You will need drugs with some precautions and this combined effect will helpful to you. You may require proton pump inhibitors (pantoprazole or lansoprazole) with prokinetic drugs (levosulpride) which actually increases stomach emptying time along with effect on gaste-oesophageal sphincter. Apart from medication you need to follow certain listed things, 1) Avoid oily,spicy and high fiber diet. 2) Avoid eating with full stomach rather you eat small frequent meals. 3) Avoid taking rest for 2 hours after meal. 4) You can walk slowly up to first 2 hrs of meal but don t walk fast. 5) You made regular eating pattern. 6) Have your dinner before 8 pm so that at the time of sleeping your stomach will be empty. 7) Do yoga regularly. All this cumulative effect will be beneficial to you while treating for the GERD. Consult some experienced physician or gastro-enterologist for further advise. Thanks and regards,