How does grapefruit juice affect how Viagra works? Is it safe to take them together?
There is a well-known effect where grapefruit juice can interact with medications. It may increase the "bioavailability" of Viagra, increasing its effectiveness.
In effect, what you are doing is mixing drugs, which can have unpredictable effects. When you drink the grapefruit juice (or eat the grapefruit), how much you drink or eat, what type it is, etc. can all play a factor. What else you've eaten, your weight, etc. can also have an effect. So there's just no way to predict how your body will react.
So, generally, it's not recommended to mix the two.
If you are determined to try this combination, we recommend trying it at home, in a safe environment, with a very low dose of Viagra at first - at most 25mg, and perhaps even less. That way you can test the drug interaction. You may experience better effectiveness, but you also may experience increased side effects like headache, stuffiness, etc.
Note: if you are taking any other medications, or have any other serious health issues, you should consult with your doctor before even considering this. The grapefruit juice could interact with some other medication you are taking, with truly unpredictable, and perhaps dangerous, results.
I've heard that Viagra can actually increase penis size. Is that true?
First, let's be clear. Viagra is not a penis enlargement pill. It is an erection-inducing pill.
However, for years we've received reports from readers that they felt like Viagra made them longer or thicker than usual. Here are just a few of the dozens of reports we've received:
"My wife said that the Viagra made my dick bigger than it has ever been."
"She noticed I was both longer and thicker."
"I am bigger and harder than ever before, and i shoot my load farther than I have
ever seen."
"Lasted much,much longer than usual. Bigger and longer in size also."
What is going on here? Could Viagra actually be increasing penis size?
We think there are two things going on. A full erection is likely to be larger than the partial erection many men get without Viagra; in this case, men may actually be bigger on Viagra. They probably aren't bigger than they were when they didn't have erectile difficulties, but they may in fact be bigger than the have been since suffering from ED.
Another factor is that Viagra does make men harder than usual, often even harder than they were before they had ED. Being so hard can feel to their partner like they are bigger. In other words, they may be making a bigger impression, even though the actual size may not be increased.
We don't know of any clinical studies of this issue, so we're left with this anecdotal evidence and our best guesses. But these consistent reports should not be ignored.