Is Cyclodynone the right gynecomastia medication for my 13 year old son?

Cyclodynon, which contains chasteberry extract, is mainly used to regulate hormonal balance in women and is not typically prescribed for gynecomastia in boys. Gynecomastia during puberty usually resolves on its own, although it is worth having a doctor assess the hormonal cause. To be sure, you may want to consider consulting a paediatric endocrinologist who will assess whether other treatments or follow-up are necessary.

If you need more personalized advice, you can use teleconsultations here:

https://www.gdziepolek.pl/telekonsultacja/z-pediatra

The advice is provided in Polish.