Information: Engystol N 10 ampoules / s are excellent to strengthen the infection defences of the body.  Engystol N amps can be taken after the onset of symptoms, as well as for prevention and chronic treatment.  Recommended for:- Engystol N is recommended for the following problems - see dosages below. Infections with fever Common Cold Flu Viral Infections RSV infections Corticosteroid-dependent asthma Dosage:-  Acute (onset of symptoms): 1 oral vial up to 3 times per day. General: 1 oral vial 3-7 times weekly. They can be taken orally or by . Contraindications: None known.   Side effects: None known. Interactions with other medication: None known.   Composition: Solution: 1.1 ml cont.: Vincetoxicum hirundinaria D6, Vincetoxicum hirundinaria D10, Vincetoxicum hirundinaria D30 6.6 μl each; Sulfur D4, Sulfur D10 3.3 μl each.