Hi @DebsSA I haven’t had the altered taste with herceptin BUT I have had other side effects from it which the medicos quickly sweep under the carpet and deny. If you look on the herceptin manufacturers web site they state the possible side effects. Fortunately for me my GP has acknowledged them so I didn’t feel totally brushed off. Herceptin ‘rareand unusual’ side effects affect up to 36% of patients. Not sure what is rare and unusual about 36% but my Oncologist is sticking with her “that doesn’t happen”. I actually had her agreeing with me at one point but she reneged by the next appointment. Hang in there. Big hugs