From the side of the cardiovascular system: possible lowering blood pressure, dizziness, a feeling of heat, redness of the skin.
From the digestive system: nausea, diarrhea, anorexia, gastralgia, abdominal pain, epigastric pain,
From the nervous system: headache.
Allergic reactions: itching, hives, angioedema, anaphylactic shock.
Other: weakness, chills, tingling of the skin, especially in the head and neck. These symptoms usually disappear after 10-20 minutes, do not require special treatment and refusal to use this drug.
When using drugs of nicotinic acid, a false increase in the concentration of catecholamines in blood and urine can be noted, and a false positive result of determining glucose in urine using a Benedict test can be noted.
With long-term administration in high doses, the drug causes a change in glucose tolerance, an increase in the activity of "liver" transaminases (ACT, ALT) in the blood serum, an increase in the activity of alkaline phosphatase in the serum, an increase in the content of uric acid in the blood serum.
If unwanted effects not described in this manual occur and if the above side effects are increased with this medication, tell your doctor immediately.