The dosage in Juvenon Cellular Health Supplement has been set well below the experimental levels that have been used in many clinical studies of the individual substances over the past 30 years. The ingredients in Juvenon Cellular Health Supplement are produced naturally in the body and produce few side effects. Occasionally, some consumers report transitory gastrointestinal effects. For this reason, taking the product with food is recommended. Persons who suffer from gastroesophageal reflux disease (GERD) or other digestive system disorders should consult their healthcare professional.Some people have found that when they take the product with dinner, they feel energized at night and have difficulty falling asleep. Persons who experience this effect may switch to dosing at lunch rather than dinner, or reduce the daily dose. Isolated cases of an allergic reaction, in the form of a rash or hives, have also been reported. Symptoms are reported to have gone away upon stopping use of the product.Pregnant women and nursing mothers should avoid Juvenon Cellular Health Supplement, because of a lack of long-term safety data. Persons with diabetes or who are glucose-intolerant should check with their healthcare professional.