Take your dose of Fildena Purple about one hour before you intend to have sex.

A: The maximum recommended dose for Fildena (sildenafil), used to treat ED (erectile dysfunction), is 100mg per day. The drug information above is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. Prolonged erection greater than 4 hours and priapism (painful erections greater than 6 hours in duration) have been reported infrequently since market approval of Fildena. To decrease the chance of adverse reactions in patients taking ritonavir, a decrease in sildenafil dosage is recommended see DOSAGE AND ADMINISTRATION , DRUG INTERACTIONS , and CLINICAL PHARMACOLOGY.
Sildenafil is also marketed as REVATIO for the treatment of PAH. Fildena is contraindicated in patients with a known hypersensitivity to sildenafil, as contained in Fildena and REVATIO, or any component of the tablet. The erectile response, as assessed by RigiScan®, generally increased with increasing sildenafil dose and plasma concentration.
Although plasma levels of sildenafil at 24 hours post dose are much lower than at peak concentration, it is unknown whether nitrates can be safely co-administered at this time point see CONTRAINDICATIONS. Blood pressure was measured immediately pre-dose and at 15, 30, 45 minutes, and 1, 1.5, 2, 2.5, 3, 4, 6 and 8 hours after Fildena or matching placebo. In the second study, a single oral dose of Fildena 50 mg or matching placebo was administered in a 2-period crossover design to 20 generally healthy males with BPH. 

For the 19 subjects who received both Fildena and matching placebo, the placebo-subtracted mean maximum decreases from baseline (95% CI) in systolic blood pressure were as follows: There was one subject with a decrease from baseline in standing systolic BP > 30mmHg following Fildena 50 mg and one subject with a decrease from baseline in standing systolic BP > 30 mmHg following both Fildena 50 mg and placebo. Two were discontinued after study period 1: one failed to meet pre-dose screening qualifications and the other experienced symptomatic hypotension as a moderately severe adverse event 30 minutes after dosing with open-label Fildena 50 mg. Of the twenty subjects who were ultimately assigned to treatment, a total of 13 subjects successfully completed dose period 1, and seven had successfully completed the previous doxazosin study https://www.drvolcanoe.com/fildena-side-effects/ (using Fildena 50 mg).
All three were taking Fildena 100 mg, and all three reported mild adverse events at the time of reductions in standing SBP, including vasodilation and lightheadedness. When Fildena 100 mg oral was co-administered with amlodipine, 5 mg or 10 mg oral, to hypertensive patients, the mean additional reduction on supine blood pressure was 8 mmHg systolic and 7 mmHg diastolic. The maximum observed decrease in diastolic blood pressure was -17.2 mmHg when sildenafil was co-administered with alcohol versus -11.1 mmHg when alcohol was administered alone.
Studies have produced relevant data on the effects of Fildena on cardiac output In one small, open-label, uncontrolled, pilot study, eight patients with stable ischemic heart disease underwent Swan-Ganz catheterization.

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