For carbocisteine, the following side effects are typical: rarely - gastritis, nausea, diarrhea, dizziness, malaise, skin rash.
Lysine salt of carbocysteine: rarely - epigastric pain, nausea, diarrhea; skin rash.
All these disorders are transient and disappear after discontinuation of the drug or after a reduction in dosage.
If any side effect occurs, you should consult your doctor.