Our original Immune Strength blend features Eucalyptus oil instead of Sacred Frankincense, so it has a slightly sharper, more menthol-like aroma that’s more uplifting, while Sacred Immune Strength is deeper and more grounding. While both blends feature powerful essential oils to boost immune system function, Immune Strength offers more benefits for respiratory illness and Sacred Immune Strength benefits are more anti-inflammatory and circulatory. We encourage you to try both blends for different immunity boosting purposes.