If your blood sugar is normal, you can drink glucose in moderation for a cold, but glucose has no curative effect on colds. Glucose is one of the essential nutrients for human body. Except for diabetics or people with impaired glucose tolerance who cannot take glucose orally under non-special circumstances, oral glucose has no special adverse effect on normal people when they have a cold. Glucose has no special therapeutic effect on colds. When you have a cold, your body’s need for glucose is not much different from that of daily life, and you can meet your daily glucose requirement through normal diet without special glucose supplementation. Most common colds are self-limiting, and if the symptoms are mild, they will clear up in a week or so. When you have a cold, you should pay more attention to rest, get enough sleep, drink more water and eat a normal light diet. If you need to take glucose during the illness, it is recommended that you take it under the guidance of a doctor, and not blindly use it on your own to avoid adverse effects.