Drug General Information (ID: DDI6Y2XOPM)
  Drug Name Tolazoline Drug Info Amifostine Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Vasodilator Agents Cytoprotective Agent
  Structure

 Mechanism of Tolazoline-Amifostine Interaction (Severity Level: Moderate)
     Additive hypotensive effects Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Tolazoline Amifostine
      Mechanism 1 Antihypertensive agent
Alpha-1 adrenergic receptor  Antagonist
Antihypertensive agent
      Key Mechanism Factor 1
Factor Name Adrenergic receptor alpha-1 Structure Sequence
Protein Family G-protein coupled receptor 1 family
Protein Function
This alpha-adrenergic receptor mediates its action by association with G proteins that activate a phosphatidylinositol-calcium second messenger system. Its effect is mediated by G(q) and G(11) proteins. Nuclear ADRA1A-ADRA1B heterooligomers regulate phenylephrine(PE)-stimulated ERK signaling in cardiac myocytes.
    Click to Show/Hide
      Mechanism Description
  • Additive hypotensive effects by the combination of Tolazoline and Amifostine 
      Mechanism 2 Antihypertensive agent
Alpha-1 adrenergic receptor  Antagonist
Hypotensive effects
      Key Mechanism Factor 2
Factor Name Adrenergic receptor alpha-1 Structure Sequence
Protein Family G-protein coupled receptor 1 family
Protein Function
This alpha-adrenergic receptor mediates its action by association with G proteins that activate a phosphatidylinositol-calcium second messenger system. Its effect is mediated by G(q) and G(11) proteins. Nuclear ADRA1A-ADRA1B heterooligomers regulate phenylephrine(PE)-stimulated ERK signaling in cardiac myocytes.
    Click to Show/Hide
      Mechanism Description
  • Additive hypotensive effects by the combination of Tolazoline and Amifostine 

Recommended Action
      Management If medically feasible, antihypertensive medications should be interrupted 24 hours prior to amifostine administration. Blood pressure should be closely monitored during and after treatment. In addition to hypotension, transient hypertension or exacerbation of preexisting hypertension may occur from intravenous hydration, discontinuation of antihypertensive medications, or other causes. Patients who continue their hypotensive medication(s) during amifostine therapy should be carefully monitored for the development of hypotension.

References
1 Bailey DG, Dresser GK "Natural products and adverse drug interactions." Can Med Assoc J 170 (2004): 1531-2. [PMID: 15136542]
2 Product Information. Xatral (alfuzosin). Sanofi-Synthelabo Canada Inc, Markham, ON.
3 Product Information. Ethyol (amifostine). Alza, Palo Alto, CA.