Onco says Herceptin does not cause side effects even though the manufacturers of herceptin says it can. So, the peripheral neuropathy, sore throat, itchy rash, ridged and cracked nails, breathlessness...
@Blossom1961 because the first one was a heavier dose. They do a loading dose at the beginning and then your final dose is smaller so you get the right amount over the whole journey, at least that is what they told me