Yes they are all absolutely genuine, we just sell in bulk and get them from different distributors, but they are all from the same manufacturers. http://goo.gl/aHCqTS We don't need an Rx because we're not sending from the US, we send from Singapore where the prescription is not required.

Everything except Ticks unfortunately. We suggest Advantix for tick prevention and treatment.

Apologies, since they are the same, when we lowered the price on Advocate, we forgot to also lower the price on Advantage Multi. This is done now. You will receive Advocate.