The chemical structure of yohimbine has no vulnerability of degradation by pepsin. A pepsin blocker would do nothing but cause digestive problems.
Ginger would help it absorb better in the intestines. Other pepsin blockers such as Prilosec or cimitdidine may cause gastric upset because the gastric pumps are shut off. Ginger works differently than these medications and is milder.
Speak softly carry a big dick, I'm mean stick!