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We commonly compound penile injections for men who need or prefer other options. These injections are often called Bi-Mix, Tri-Mix, or Quad-Mix.
Bi-Mix is an injectable two-drug prescribed medication that typically combines papaverine and phentolamine.
Tri-Mix is an injectable three-drug prescribed medication that typically combines alprostadil, papaverine, and phentolamine.
Quad-Mix builds on Tri-Mix by adding a fourth ingredient, commonly atropine, to the formulation.
