The dosage of horse chestnut products depends entirely on the type of product. Horse chestnut capsules are usually declared with a precise dosage recommendation from the manufacturer.
You should always follow this recommendation, unless you have agreed otherwise with your doctor. Horse chestnut drops, essence or tincture are also usually labelled with a precise dosage recommendation.
The dosage for gels, ointments and balms is less strict. External application can take place several times a day if necessary. If you are unsure, it is best to discuss the dosage with a pharmacist or doctor.