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The most commonly reported adverse reactions in patients taking CIALIS for the treatment of erectile dysfunction or benign prostatic hyperplasia were headache, dyspepsia, back pain and myalgia, in which the incidences increase with increasing dose of CIALIS. The adverse reactions reported were transient, and generally mild or moderate. The majority of headaches reported with CIALIS once-a-day dosing are experienced within the first 10 to 30 days of starting treatment. Levitra (Advanced Reading)Recommended Administration

Rescriptor (delavirdine) viagra warning Rarely, a sudden decrease or loss of hearing, sometimes with ringing in the ears and dizziness, may occur. Stop taking sildenafil and get medical help right away if these effects occur. CIALIS for Use as Neededhave heart or blood vessel problems that make sexual intercourse inadvisableP-glycoprotein (e.g. Digoxin) — Coadministration of tadalafil (40 mg once per day) for 10 days did not have a significant effect on the steady-state pharmacokinetics of digoxin (0.25 mg/day) in healthy subjects.

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Single oral doses of phosphodiesterase inhibitors have demonstrated transient dose-related impairment of color discrimination (blue/green) using the Farnsworth-Munsell 100-hue test and reductions in electroretinogram (ERG) b-wave amplitudes, with peak effects near the time of peak plasma levels. These findings are consistent with the inhibition of PDE6 in rods and cones, which is involved in phototransduction in the retina. The findings were most evident one hour after administration, diminishing but still present 6 hours after administration. In a single dose study in 25 normal males, Levitra 40 mg, twice the maximum daily recommended dose, did not alter visual acuity, intraocular pressure, fundoscopic and slit lamp findings.

viagra soft Get emergency medical help if you have signs of an allergic reaction to Viagra: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.-5 mg orally once a day at approximately the same timeIn addition, heart attack, stroke, irregular heartbeats and death have happened rarely in men taking Viagra. Most, but not all, of these men had heart problems before taking Viagra. It is not known if Viagra caused these problems.

The safety of Viagra is unknown in patients with bleeding disorders and patients with active peptic ulceration.Figure 4: Mean Standing Systolic Blood Pressure Change from BaselineViagra works best on an empty stomach. Keep in mind that high-fat foods can interfere with Viagra, resulting in it taking longer to work. Take the pill about 30 to 60 minutes before sex. It usually stays active for about four to five hours. However, it can sometimes last eight hours or more.