Study to evaluate the tolerability and safety of Kiddi® Pharmaton Fizz effervescent tablets, in children of 6 to 14 years, comparing a given formula with an improved one with reduced mineral content (qualitatively equivalent to the first one) and a comparator product.

Inclusion Criteria:

• Children of both sexes aged between 6 and 14 years, inclusive
• Children, healthy or during convalescence, for which prevention or treatment of marginal vitamin deficits is indicated
• Willingness of the children and parents to give their written informed consent, according to Good Clinical Practice and local regulations
• Pregnant children will not be excluded

Exclusion Criteria:

• Has taken medications containing vitamins A or D, retinoids, or iron during the 4 weeks preceding the study enrolment
• Pre-treatment (less than 2 weeks prior the inclusion in this trial) and/or concomitant treatment with any drug that may influence the trial symptomatology, and may interfere with the evaluation of the safety of the test drug
• Participation in other clinical trials within the last 4 weeks and concurrent participation in another clinical trial
• Relevant allergy or kown hypersensitivity to one of the ingredients of the investigational drug
• Has any serious disorder that may interfere with the participation to the trial
• Malabsorption syndrome, liver and/or renal diseases or juvenile diabetes
• Increased calcium blood concentration, or an increased calcium-excretion
• Evident states of protein deficiency
• Presence of lysinemia (defect of the enzyme lysine ketoglutarate reductase)