dl-Tetrandrine is an orally active and brain-penetrant calcium channel blocker that inhibits voltage-dependent calcium channels. dl-Tetrandrine selectively blocks Ca2+ influx with an IC50 value of approximately 1-10 μM. dl-Tetrandrine exerts anti-inflammatory, immunosuppressive, and anti-arrhythmic activities by inhibiting intracellular calcium overload, and can reverse multidrug resistance in tumor cells. dl-Tetrandrine is promising for research of autoimmune diseases (such as rheumatoid arthritis), cardiovascular diseases, and tumor drug resistance reversal.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.