Want to improve immunity, what injection is the best? High scores ask professional doctors to answer.

I'm not a professional, but I still want to give you an opinion. .

There are many drugs to improve immunity. Besides what you said, there are levamisole, plant polysaccharide (Ganoderma lucidum) and BCG extract.

As for the effect, thymosin, BCG extract and plant polysaccharide have a good effect. These drugs directly enter the human body without being digested by the digestive tract, so it is best to choose regular manufacturers for their high utilization.

Personally, I suggest you use transfer factor, because it is easy to use and can be taken orally without injection. No matter which drug you choose, it doesn't work in a short time, and it usually takes three months to work. Therefore, it is better to take a convenient transfer factor. It is recommended that you eat the transfer factor for at least 3 months, and it is best to refrigerate if you don't eat it. Refrigerate at 5 degrees.