SILDENAFIL CITRATE is used to treat pediatric pulmonary arterial hypertension in children in whom the risk-benefit profile of. Do you take it will depend on: your age; the condition being treated; how. If you are using the oral liquid, shake the bottle well for at least 10 seconds before. If you are using the oral liquid, shake the bottle well for at least 10 seconds before. Yohimbe can be taken in capsule or liquid forms, and requires a doctor's prescription.