No specific minimum age is given in the product information, so it comes down to your child's tolerance and your own judgement. The tea contains black tea along with herbs and fruit, which gives it a fuller base but also means it is not a pure caffeine-free herbal infusion. For most children, a small cup in the morning or afternoon is fine, but if your child is sensitive to caffeine, avoid offering it late in the evening so it does not interfere with sleep.
When introducing it, start with a weak, small serving and gradually increase if your child likes it. This is a sensible approach for any new herbal tea, especially for younger children. If your child has a known allergy or sensitivity to any of the listed plants, or if you have any concerns about suitability, consult a pediatrician before offering it. As with any new drink, watch for how your child responds.
The tea is not a replacement for water or for a balanced diet. It is a food product made from plant ingredients and should be treated as an occasional or everyday drink within a varied menu, not as medicine.