For the treatment of erectile dysfunction, filagra is recommended. For pulmonary arterial hypertension, it is also recommended. This drug aids in the onset and maintenance of an erection by relaxing the penile muscles and increasing blood flow in them. If you smoke, drink alcohol or caffeinated beverages, or use illegal substances, please let your doctor know as these things may affect how well your prescription works.  In most cases, drug interactions happen when a medication is taken with food or another medication. This jelly should be consumed thirty to sixty minutes before engaging in sexual activity. Children under the age of eighteen should not consume this Filagra.