Valganciclovir is contra-indicated in patients with hypersensitivity to valganciclovir, ganciclovir or to any of the excipients.
Due to the similarity of the chemical structure of Valganciclovir and that of aciclovir and valaciclovir, a cross-hypersensitivity reaction between these drugs is possible. Therefore, Valganciclovir is contra-indicated in patients with hypersensitivity to aciclovir and valaciclovir.
Valganciclovir is contra-indicated during breast-feeding.