Protein powder can be taken for colds. Protein powder contains a variety of nutrients and essential amino acids, which help to improve the body’s immunity and help to recover from colds. You should also eat more vegetables and fruits to replenish vitamin C. You should actively use anti-cold medications, such as cold and flu capsules. If you have cough, phlegm and fever, you should also use cough suppressant and anti-inflammatory drugs. Be sure to rest more, avoid excessive exertion, not to carry out heavy physical work during the cold, after recovery to strengthen physical exercise, enhance physical fitness, timely supplementation of nutrition.