HMB (Hydroxy Methylbutyrate)
Also Known As: Beta-Hydroxy Beta-Methylbutyrate, Leucine Metabolite
Compound Type: Anti-Catabolic / Muscle Preservative
HMB is a metabolite of the amino acid Leucine. In the bodybuilding world, it is famous for being “Anti-Catabolic”—meaning it prevents the breakdown of muscle tissue during intense training or caloric deficits.
However, the penis is not a bicep. While HMB is excellent for athletes trying to cut fat without losing muscle, its specific mechanism of action does not translate well to penile tissue expansion.
Does HMB Increase Penis Size?
Directly? No. Indirectly? Maybe. HMB targets skeletal muscle fibers, whereas the penis is composed of smooth muscle and connective tissue. However, HMB can help reduce the “Fat Pad” (FUPA), which can visually reveal more length.
The Science: Skeletal vs. Smooth Muscle
1. Wrong Muscle Type:
HMB works by inhibiting the ubiquitin-proteasome pathway in Skeletal Muscle (striated tissue). The Corpus Cavernosum (erectile tissue) is Smooth Muscle. There is currently no clinical evidence that HMB prevents atrophy or stimulates growth in smooth muscle tissue.
2. The “Visual Gain” (Fat Loss):
For every 30lbs of excess weight, you “bury” about 1 inch of penis in the pubic fat pad. HMB is highly effective at preserving lean mass while dieting. If you are using HMB to get lean, you will likely “gain” visible length, but this is fat loss, not tissue growth.
3. Testosterone Neutral:
Multiple studies have analyzed HMB’s effect on anabolic hormones. The consensus is that HMB does not increase Testosterone or Growth Hormone levels; it merely protects the muscle you already have.
✖ The Verdict: FITNESS ONLY
Great for the Gym, Useless for PE. If you are looking to get shredded and reveal your “hidden” length by losing belly fat, HMB is a great tool. But do not buy it expecting it to directly enlarge the penis or improve erection quality. It is a gym supplement, not a sex supplement.
3g (3,000mg)
Split into 3 doses
Take with food
Safety Profile & Side Effects
- Safe: HMB is extremely safe with almost no reported side effects.
- Mild stomach discomfort (rare).
- Calcium: Many HMB supplements are bound to Calcium. Check labels if you have hypercalcemia.
- No known drug interactions.
Data source: WebMD / NSCA
Recommended Products
If you are cutting weight, HMB is a solid addition.
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