Ask Dr. Macrene: Are All Actives Plant-Based? Posted by Macrene Alexiades MD PhD on November 01, 2021 Are All Macrene Actives Plant-Based? All actives are plant-sourced, vitamins, minerals or amino acids. The rare ingredients that are not plant-based are rigorously shown to be non-toxic. ← Back to Ask Dr. Macrene ← Older Post Newer Post →