Amoxicillin is an Antibiotic

Black stools are seen in the following conditions: - Black stools from eating black foods or iron supplements. - The most common condition causing black stools is a bleeding ulcer. - Black stools caused by blood indicate a problem in the upper digestive tract. It is likely that the black stools could have been duet to gastric ulcer and antibiotic use. If this is regularly occurring you should visit a gastroenterologist so that you can be examined and undergo investigations such as endoscopy/colonoscopy(if indicated) to find the underlying cause and have it treated. So you should try to control your gastric problem by the following steps: - Don't skip meals, you may not feel like eating but in such conditions you should have the reduced amount in frequent intervals(i.e. 3 square meals broken down to 5 or 6 as you can tolerate) and slowly increase as you get better. - Reduce/ Avoid spicy,fried, fatty, junk and oily food - Avoid/ Limit drinking coffee, tea and carbonated drinks to once a day - Exercise regularly (30-45mins per day) - Increase daily intake of water to 3 liters - Avoid/Stop smoking and drinking if you have the habit. - Reduce stress through methods such as yoga/meditation. - Avoid painkillers as it will increase your gastric problems at this moment. If the conditions persists or worsens visit the gastroenterologist at the earliest.