Jeff Wittmer, Author at Wittmer Rejuvenation Clinic

Thymosin Alpha-1: Immune Support Peptide Guide

Thymosin Alpha-1 (Tα1) is a 28-amino-acid peptide naturally produced by the thymus gland — the immune system’s “master trainer” that programs T-cells to recognize and fight pathogens. As we age, the thymus gland shrinks (a process called thymic involution), leading to declining Tα1 levels and progressively weaker immune function. This is one reason why older adults are more susceptible to infections, slower to recover, and less responsive to vaccines.

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What is IGF-1 LR3? Growth Factor Peptide for Muscle & Recovery

Peptides / Jeff Wittmer

IGF-1 LR3 (Insulin-like Growth Factor 1, Long R3) is a modified version of IGF-1 that supports muscle growth, recovery, and overall performance. The “LR3” modification extends its active life in the body, making it more potent than standard IGF-1.

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Tirzepatide Oral Tablets Treatment Plan: How to Take Tirzepatide Oral Tablets

Peptides / Jeff Wittmer

Tirzepatide oral dissolvable tablets provide a needle-free option for blood sugar control and weight loss. As a dual GLP-1/GIP receptor agonist, tirzepatide offers powerful metabolic benefits through convenient daily tablets. This treatment plan walks you through dosing, administration, and what to expect.

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Semaglutide Oral Tablets Treatment Plan: How to Take Semaglutide Oral Tablets

Peptides / Jeff Wittmer

Semaglutide oral dissolvable tablets offer a needle-free alternative to injectable semaglutide for blood glucose control and weight loss. This treatment plan covers everything you need to know about taking semaglutide oral tablets effectively — dosing protocols, administration guidelines, and what to expect during your weight loss journey.

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What is GHK-Cu? Copper Peptide for Skin, Collagen & Anti-Aging

Peptides / Jeff Wittmer

GHK-Cu (Glycyl-L-Histidyl-L-Lysine Copper) is a naturally occurring copper peptide found in human plasma. It supports tissue repair, collagen production, skin regeneration, and has gained significant attention for its anti-aging properties.

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What is Thymosin Alpha-1? Immune-Supporting Peptide Explained

Peptides / Jeff Wittmer

Thymosin Alpha-1 is a naturally occurring peptide that plays a crucial role in immune system regulation. Originally isolated from thymus tissue, this peptide supports immune resilience, antiviral defense, and overall immune balance.

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What is Macimorelin? Oral Growth Hormone Peptide Explained

Peptides / Jeff Wittmer

Macimorelin is an oral growth hormone secretagogue that stimulates your body’s natural production of growth hormone. Unlike injectable peptides, Macimorelin is taken as a capsule, offering convenient support for recovery, sleep quality, and lean body composition.

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What is Tesamorelin? Growth Hormone Releasing Peptide for Fat Loss

Peptides / Jeff Wittmer

Tesamorelin is a growth hormone releasing hormone (GHRH) analog that stimulates natural growth hormone production. It’s particularly known for its ability to support fat metabolism, especially in the abdominal area, while promoting overall metabolic health.

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What is 5-Amino-1MQ? NNMT Inhibitor for Fat Loss & NAD+

Peptides / Jeff Wittmer

5-Amino-1MQ is a small molecule that inhibits an enzyme called NNMT (nicotinamide N-methyltransferase). By blocking this enzyme, 5-Amino-1MQ supports fat loss, lean muscle maintenance, and healthy NAD+ levels — making it a unique tool for metabolic optimization.

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What is MOTS-C? Mitochondrial Peptide for Metabolic Health

Peptides / Jeff Wittmer

MOTS-C (Mitochondrial Open Reading Frame of the 12S rRNA-c) is a mitochondrial-derived peptide that supports metabolic health, energy production, and insulin sensitivity. Often called an “exercise mimetic,” MOTS-C activates many of the same metabolic pathways as physical exercise.

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