In the Netherlands , individuals have two options for euthanasia . They can orally consume 100 ml of concentrated syrup containing either 15 grams of pentobarbital or 15 grams of secobarbital, or they can choose to have 2 grams of thiopental or 1 gram of propofol administered intravenously by a doctor, followed by a muscle relaxant.  In recent years only 15% of those who died by euthanasia opted for orally consuming the lethal drug(s), the rest choosing to have the drugs administered intravenously by a doctor instead. 
Let’s start with the vitamins found in TestroVax. This product has 3 B vitamins in Vitamin B6, Vitamin B12, and Folic Acid. Among these three, only Vitamin B6 is backed by science to promote healthy levels of testosterone but it’s not given in its best form and dosage so don’t expect too much out of it. Vitamin B12 is a manly vitamin even if doesn’t boost test just because it enhances our sperm. Again, it’s not given in optimal form and dosage. Folic Acid on the other hand, may theoretically influence recovery but I think it’s a troubling addition because the research surrounding this vitamin are mostly on women.