Please post your two cents on Herceptin "side effects" real or perceived!

[Vinafera]

In 8/2015 I was diagnosed with stage IV BC w/ bone mets. Been on Herceptin every 2 weeks since 9/2015 with no end in site for that. Infusion of Herceptin every 2 weeks so it coincides with Zoladex and Xgeva injections. My only side effect of Herceptin was a reduction in my EF which a trip to the cardiologist fixed with a beta blocker. I've tolerated all the meds including chemo remarkably well. The chemo did permanent damage to my kidneys, but surprisingly they've healed more than expected. Overall I haven't had many health issues despite having stage IV with bone mets.