The professor did not explain where the two injections had come from. He merely outlined their advantages and drawbacks, then let Hermione choose for herself.
The substance called SSS Serum could make someone superhuman—exceptionally strong, intelligent, and tall—but it would also magnify obsessive emotions, making good people better and bad people worse.
Miracle Serum, on the other hand, could develop the brain, grant a Healing Factor with rapid regeneration, and push physical abilities to the limits of humanity. Its drawback was that severe injuries could drive the user insane, causing them to lose all reason, kill their enemies, and eat them.
Both drugs could solve the problem of insufficient stamina and resist aging to some extent. After hesitating only briefly, she chose the latter.
Mainly because becoming tall and muscular would be entirely negative for her. How was a little girl supposed to explain to her friends if she suddenly turned into a hulking muscle woman?
Su Ming shrugged and suggested that she could learn from Mr. Malfoy and say it was the result of working out.
That earned him an eye-roll from the little girl.
Still, her choice of Miracle Serum suited Su Ming better. For one thing, it was much easier to inject than SSS Serum. There was no need to prepare an iron coffin or consume electricity.
All he needed was a bottle, somewhere to secure her, and then he could slowly administer the medicine like an IV drip.
The serum had been separated from his own blood by Dr. Erskine after returning to Marvel. It was also easier to make than preparing SSS Serum from Steve's blood.
Its Healing Factor was obvious for all to see, and it offered better chances of survival. A person had to stay alive before they could think about anything else.