Breastfeeding Some general anesthetics pass into breast milk, but they have not been reported to cause problems in nursing babies whose mothers were given the drugs. Diseases of the endocrine system, such as diabetes or thyroid problems. Because general anesthetics affect the central nervous system, patients may feel drowsy, weak, or tired for as long as a few days after having general anesthesia. Fuzzy thinking, blurred vision, and coordination problems are also possible. For these reasons, anyone who has had general anesthesia should not drive, operate machinery, or perform other activities that could endanger themselves or others for at least 24 hours, or longer if necessary.
Most side effects go away as the anesthetic wears off.
Nightmares or unusual dreams. Yellow eyes or skin. Interactions General anesthetics may interact with other medicines. When this happens, the effects of one or both of the drugs may be altered or the risk of side effects may be greater. Anyone who is going to receive a general anesthetic should make sure the doctor knows about all other medicines that he or she is taking.