Fatigue (feeling tired), fever, chills, weakness, nausea (feeling sick to your stomach), vomiting (throwing up), dizziness, body aches, and high or low blood pressure are all possible side effects of immunotherapy. They are especially common in non-specific immunotherapy and oncolytic virus therapy.

How long does fatigue last after immunotherapy?

Fatigue usually lasts from three to four weeks after treatment stops, but can continue for up to two to three months. Combination therapy.

How long do side effects last with immunotherapy?

When immunotherapy side effects show up varies, but most immunotherapy patients dealing with side effects see them in the first weeks to months of treatment. With proper treatment, the side effects can resolve in one to three weeks.