Your doctor could put you on iron supplements, too. Whether you’re taking them after being told to by your GP, or just bought some over-the-counter, the doctor said: “Make sure not to take more than the recommended daily dose, as this can cause constipation, nausea, vomiting and stomach pain”.
Article source: https://www.huffingtonpost.co.uk/entry/ferritin-face-symptoms-explained_uk_6a8c3cb7e4b0a833ba4334f9