When you take ginseng or red ginseng, you may experience a fever-like sensation due to the function of [improving blood flow by inhibiting platelet aggregation], but your body temperature does not actually rise. It is a story made up by foreign merchants to compete against the high-quality Korean Ginseng. A study conducted by the Rural Development Administration in 2012 revealed that this claim was not true.
There is a claim that a whole red ginseng must be consumed, but this is false. After red ginseng is extracted using up-to-date technology, only the starch remaining in the ginseng skin (carbohydrate) and the fiber are left. Typically, such scraps are used as animal feed. Also, the claim that red ginseng must be extracted as very tiny particles is not true. If the powder particles are small, they stick to each other and hinder extraction. Most of the bioactive components in ginseng are easily extracted even with a typical extraction method.
This is to recharge the energy needed throughout the day, but more importantly, the absorption rate may go down slightly if the red ginseng is eaten along with other food. However, if you feel uncomfortable eating it on an empty stomach you can eat it after a meal.
As for infant, there is no study telling from what age it is possible to take red ginseng. However, since the digestive and immune systems of a infant less than 24 months old may be incomplete, all foods should be consumed with care. So, it is advised to take it after the age of 24 months, and it is best to consult your pediatrician before your kids start to take it.
Oxidized (rusted) iron (Fe) components destroy the main active ingredients of red ginseng. However, most steel spoons are stainless, so you can take it without worry.