Can You Take Germanium and Vitamin C Together?

Dose or timing may matter

The short answer

Organic germanium supplements have documented nephrotoxicity. High-dose vitamin C adds oxalate renal burden. Combining them may synergistically stress kidney function.

How to arrange timing

Exercise caution with germanium supplementation in general. If using both, limit vitamin C to under 500 mg/day and monitor kidney function closely.

Reference

Reference noted for this combination: Tao SH, Bolger PM. Regul Toxicol Pharmacol. 1997;25(3):211-219; Massey LK et al. J Nutr. 2005;135(7):1673-1677

Important context

Whether supplements suit you together also depends on dose, product formulation, health conditions, and medication use. Ask a doctor or pharmacist first if you take medication, are pregnant or breastfeeding, or have a chronic condition.