Hello dear Warm welcome to Healthcaremagic.com I have evaluated your query in details . * This is in relation with intestine infection , not related to blood donation . * The use of stool softeners , laxatives are strictly prohibited when you have diarrhea ; on the reverse it makes you more suffer . * Guidelines for better outcome Consume plenty of liquids . Prefer soft , light , bland , vegan diet . Avoid all types of oily , spicy , non veg , hot beverages , junk foods , dairy fat . Intake of PPI ( as omeprazole ) , antibiotics ( with metronidazole on pack ) pro biotics ( with lacto bacillus ) help to give faster recovery . Hope this will help to clear your doubt . Wishing you fine recovery . Always welcome for any further assistance anytime . Regards .