Caffeine warning: The recommended dose of this product contains about as much caffeine as a cup of coffee. Limit the use of caffeine-containing medications, foods, or beverages while taking this product because too much caffeine may cause nervousness, irritability, sleeplessness, and, occasionally, rapid heart beat.
The list of signs and symptoms mentioned in various sources for Hartnup Disease includes the 23 symptoms listed below: 1  Itchy rash only on light exposed areas. 2  Headache. 3  Intermittent ataxia. 4  Abdominal pain. 5  Chest pain. 6  Pain in the extremities. 7  Crying spells. 8  Mental retardation if untreated. 9  Fainting.
Early in the disease, symptoms may include a vague, heavy feeling of tightness in the chest and in the allergic patient, there may be associated rhinitis and conjunctivitis symptoms. Typical symptoms which patients experience include coughing, wheezing, chest tightness and dyspnea.