Blog
Straight answers to the questions patients actually ask about weight loss, fitness, and the biology behind both.
Most programs focus on one outcome. Rx2BFIT addresses the full picture, and these articles do the same: why effort alone does not always move the scale, and how physician-guided treatment works with your biology.
22 articles · Page 1 of 3
- Performance & RecoveryWolverine Blend
BPC-157 and TB-500 Together: Is There Evidence for Combining Them?
No human trial has tested BPC-157 with TB-500, and a 2026 rat study found no added benefit. The evidence, the FDA and WADA status, and what helps injuries heal.
- Performance & RecoveryBPC-157
BPC-157 for Tendon and Ligament Injuries: What the Studies Show
BPC-157 improved tendon and ligament healing in rat studies, but no controlled human trial exists. What the research shows, and what is proven to help.
- Healthy Aging & WellnessGlow Blend
Do Peptides Help Hair, Skin, and Nails? What the Evidence Says
Topical peptides show modest skin benefits in small trials. Evidence for hair and nails is thin, biotin can distort lab tests, and nothing matches minoxidil.
- Healthy Aging & WellnessGHK-Cu
Does GHK-Cu Help With Hair Growth?
GHK-Cu has lab and animal data for hair follicles but no human trial of its own. See the studies, the FDA status, and how it compares with proven options.
- Performance & RecoveryNAD+
Does NAD+ Decline With Age, and Does Restoring It Help?
NAD+ appears to fall modestly with age in some human tissues. Supplements raise blood levels, but trials show few gains in muscle, metabolism, or cognition.
- Performance & RecoveryTesamorelin / Ipamorelin
Does Tesamorelin Reduce Visceral Fat? What the Research Shows
Tesamorelin cut visceral fat about 14 to 18 percent in HIV lipodystrophy trials, without weight loss, and the fat returned after stopping. The evidence.
- Healthy Aging & WellnessPT-141
How Does PT-141 (Bremelanotide) Work?
PT-141 (bremelanotide) acts on melanocortin receptors in the brain, not on blood flow. See how it works, what the RECONNECT trials found, and its FDA status.
- Medical Weight LossTirzepatide
How Does Tirzepatide Work? GIP and GLP-1 Explained
Tirzepatide activates both GIP and GLP-1 receptors. How that lowers appetite and blood sugar, the label dose schedule, trial results, and key risks.
- Performance & RecoverySermorelin
How Long Does Sermorelin Take to Work?
Sermorelin raises growth hormone in minutes and IGF-1 within about 2 weeks, but studies show body changes take 3 to 6 months and are modest. The evidence.
- Performance & RecoveryNAD+
NAD+ Injections vs. IV vs. Supplements: What Is the Difference?
How oral NAD+ precursors, IV NAD+ infusions, and NAD+ injections differ in absorption, evidence, side effects, and regulatory status as of September 2026.