If you get a fake rabies vaccine, you may have some toxic reactions or allergic reactions to the fake drug. If the reaction is toxic, you will usually experience dizziness, nausea, vomiting, or general weakness, memory loss, and uncoordinated arms and legs. If the situation is serious, there is also a possibility of serious symptoms such as blurred consciousness or even coma. In case of allergic manifestations, redness, swelling, itching and pain may appear around the injection wound. If the allergy is severe, these rashes may expand to the whole body and a generalized macular redness or rash may appear, which may also lead to low blood pressure and symptoms of anaphylaxis.