Some comparisons, unless you try them yourself, you'll never know where the gap lies.

Last autumn, in the corner of a drugstore in Taipei, I spotted three male enhancement products: American GOODMAN enlargement pills, Titan Gel Gold Edition, and a trendy spray. The packaging was all exquisite, but how effective they were, only use could tell.

Today, no empty talk—just my real experience comparing these three products over eight consecutive weeks, with data recorded every week.

Why being small is a knot in many men's hearts

First, let's address a fact that might be overlooked: penis size is largely determined by the development of the corpus cavernosum and its ability to fill with blood. The corpus cavernosum is like a sponge—the better its elasticity and the fuller the blood flow, the more ideal the size and firmness.

But the modern male lifestyle—prolonged sitting, late nights, stress—is quietly damaging the corpus cavernosum. Vascular elasticity declines, blood flow becomes sluggish, and without adequate blood nourishment over time, the corpus cavernosum shrinks and loses elasticity. This is why many men, though not old in age, feel their size has diminished.

Being small isn't innate; it's the result of accumulated wear and tear. And since it's wear and tear, there's potential for repair.

Side-by-side comparison of three products: ingredients, principles, experience

American GOODMAN enlargement pills

The core ingredient is OPP+, an active substance extracted from the testes of deep-sea bull sharks in the Western Pacific. Sounds a bit far-fetched, but it's indeed one of the recognized ingredients that can effectively increase penile blood flow and volume.

Its principle is straightforward: low-temperature extraction preserves OPP+'s activity, which, once in the body, awakens dormant corpus cavernosum cells and repairs damaged tissue. Combined with L-arginine to dilate blood vessels, more blood flows into the corpus cavernosum, making the penis fuller and thicker during erection.

My experience: In the first week of use, morning erections noticeably increased, and firmness improved. By the fourth week, there was a visible change in flaccid size. At the eighth-week measurement, erect length had increased by about 1.5 cm, and girth by about 0.8 cm.

Titan Gel Gold Edition

A topical gel applied to the penis, absorbed through the skin. It focuses on immediate thickening, but the effect is temporary—wash it off, and it's gone.

I tried it twice. There was indeed a warming and swelling sensation, with an immediate increase of about 0.5 cm in size, but it subsided after half an hour. It's suitable for a quick fix, not for long-term improvement.

A trendy spray

Marketed mainly for delaying ejaculation, with enlargement promoted on the side. But the ingredient list only contains alcohol and menthol—nothing that can promote corpus cavernosum growth. I used it once and shelved it; it's purely psychological comfort.

Why American GOODMAN solves the root problem

After using all three products, my biggest takeaway is: topical products treat the symptoms, not the cause; oral ones can truly repair from within.

The OPP+ in American GOODMAN isn't stimulating—it's nourishing. It provides the corpus cavernosum with the nutrients needed for growth, letting cells repair and divide on their own. This process takes time, but the effects are cumulative and stable.

After one course of treatment (4 cans), the biggest change wasn't size—it was confidence. I used to worry about performance; now I'm completely at ease. My wife also says I'm different—more proactive, more engaged.

Usage recommendations

If you want to try it too, keep a few points in mind:

As for safety, I've checked the information: OPP+ is a natural extract, hormone-free, with few reported side effects. In my own use, I felt no discomfort.

A fun fact

Many people don't know that the penile corpus cavernosum is the only tissue in the human body capable of "secondary growth." As long as it gets enough nutrition and stimulation, it can keep growing. American GOODMAN capitalizes on exactly this.

So, stop saying "it's just how I was born." Your body has more potential than you think.

Final thoughts

A man's confidence isn't built on bragging—it's built on capability. When you stand tall in front of the mirror, when you no longer shy away in front of your partner, that sense of assurance is something no words can replace.

American GOODMAN enlargement pills might just be the start you need.