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1. Since by the age of 20 growing ends of long bones are completely closed/ fused, thus no possible further growth in terms of height is possible. [and your age is no exception]
2. No Pharma company will ever describe his/her product not to be authentic, [same is with the product you have mentioned], and as you know 90% of knowledge is attained through eyes, this is the reason of showing their products on television.
PS. don't fall for marketing gimmicks.
3. Height of an individual also depends upon the height of the parents [genetic], if they have short stature, their siblings can/may have the same height.
PS. There is no such magic Ingredient in any herbal formula which can increase the length of bones [after
puberty is achieved]
4. eat a healthy, balanced and nutritious diet and practice pranayam,yogasanas, back exercises that stretches the spine which helps in increasing height by 1”-2” inches.
PS. Contact with a yoga expert for various Yogasans which can be adopted and practiced in daily routine.