Iron is LIKELY SAFE for most people when it is taken by mouth in appropriate amounts. However, it can cause side effects including stomach upset and pain, constipation or diarrhea, nausea, and vomiting. Taking iron supplements with food seems to reduce some of these side effects. However, food can also reduce how well the body absorbed iron.
Oatmeal is a great breakfast choice if you have high blood pressure, but oat bran can provide even more health benefits, since itâs higher in fiber, which helps to lower blood pressure and improves digestive health. This low-sodium food can be prepared as a hot cereal and topped with fruit or used in pancakes.
Foods That Naturally Lower Blood Pressure. 1  1. Beetroot. 2  2. Dark Chocolate. 3  3. Pomegranate. 4  4. Oats. 5  5. Watermelon. 6  6. Garlic. 7  7. Flaxseeds. 8  8. Blueberries.