Hi,
Karvol plus capsule, is used for treating the symptoms of
nasal congestion. As, in your case, nasal tube has already been inserted to remove the medicines. Definitely, its ingredients- camphor, menthol, eucalyptol and terpineol are irritant to the intestine, still, amount in one capsule does not seem to be able to cause a very serious damage or fatal outcome.
Still, more prognosis, will depend on the time elapsed between capsule intake & insertion of nasal tube. If the time elapsed is less, then most of the ingredients will be removed from the stomach before reaching to intestine and giving a favorable outcome. However, delay in insertion of nasal tube may give symptoms of intestinal irritation and hence a delay in recovery. Generally, an observation period of 12-24 hours seem reasonable in this case.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Satnarain Bansal, General & Family Physician