Ventipulmin Syrup Dosage and administration For Oral Use. Twice daily administration of 4 ml Ventipulmin Syrup per 125 kg bodyweight. This is equivalent to twice daily administration of 0.8 micrograms clenbuterol hydrochloride/kg bodyweight. The syrup should be added to the feed (one depression of the pump delivers 4 ml syrup). Treatment should continue for as long as necessary.