Yes, vitamin D and iron can be taken together safely. There is no direct negative interaction between the two, so they are generally safe to consume simultaneously. However, for optimal absorption, it is recommended to take iron on an empty stomach or with vitamin C, while vitamin D is best absorbed when taken with a meal containing fat. It can be beneficial to space their intake at different times of the day (for example, iron in the morning and vitamin D with lunch or dinner) to maximize their absorption and effectiveness. Both nutrients play important roles in health—vitamin D for bone health and immune function, and iron for red blood cell production and oxygen transport. It is always wise to consult a healthcare provider before starting supplements to ensure the regimen suits individual health needs.