Will Rhophylac® cause more pain on injection due to the volume and needle length?
There is no evidence to suggest that a Rhophylac® injection causes more pain than injections of other anti-D products with less volume or shorter needles. In a clinical trial, only 2 women-0.9%-reported pain at the injection site. The 1 1/2-inch needle length allows clinicians to decide the best injection site: buttocks, upper arm, or thigh. In addition, the needle is not permanently attached to the syringe, so the clinician can choose a different length needle.
