Remember the listed Contraindications are for people receiving treatment for cancer. Side effects for healthy people could be very different.
The article is suggesting this drug for boosting the immune system of elderly people. The elderly frequently react to drugs (have different side effects) than do people in their prime.
And as decimon stated lower dosages can have different effects. Also if you read the website down below the box you will note the drug is frequently used with another drug. Being a drug used for helping boost cancer patents immune systems I would expect this drug to be part of a patient’s daily drug cocktail.
As for medicinal herbs; you have to be aware of possible side effects of those as well.
I am pretty well aware of the side effects of herbs which amount to nothing for the vast majority of them. Caffea arabica would have to be high on the list of whole botanical medicinal plants, commonly used, that has side effects.
Quoting Dr. Goetzl, “Our job was to find a therapy that not only works, but does so at a dose range with no side effects.”
I hope they succeed.