Ecomer, opinions and questions

Good morning. I have a problem with flat warts on my face. The dermatologist recommended removing them with a laser, however, only in late autumn (he claims that now there is too much sunlight). Until then, he ordered to raise the body's immunity (buy some pills) to increase the chance that the warts would not spread / new ones would appear, but he did not specify what type of tablets would be the best (quote: "Some vitamins"). Could I ask for a recommendation of something that would be suitable for raising immunity in the described problem? And the second question - do drugs with antiviral action (Groprinosin or others) make any sense in case of a problem with warts or is it rather not worth trying? Thank you in advance for your help.