(-)-Epinephrine is a natural predominant neurotransmitter that is released from the adrenal medulla and activates adrenoceptors. (-)-Epinephrine has been found to be an effective β2-agonist and bronchiodialator. (-)-Epinephrine is an activator of β2-AR. Through these receptors, (-)-epinephrine may induce either contraction or relaxation of vascular smooth muscle, depending on adrenoceptor subtype expression. Receptor-mediated actions of (-)-epinephrine are also relevant to blocking anaphylaxis, reversing cardiac arrest, and reducing bleeding in clinical trials.

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.