Are you suffering in silence about the inability to achieve or maintain an erection when engaging in sexual activities? Well, you should take some comfort in knowing that this condition, known as erectile dysfunction, affects men of every age and background in every corner of the globe. Viagra is a popular treatment option, as the pills have been proven safe and effective. They are available in 25 mg, 50 mg and 100 mg doses, depending on your doctor’s prescription. You may be tempted to take multiple pills if you intend on having sexual intercourse for an extended period of time. However, this is definitely not recommended. You should only take the prescribed dosage and never exceed more than one pill a day or within a 24-hour period. Doing so can produce dangerous side effects and is not worth the risk.