PinnyPeptide

GHK-Cu vs TB-500

Side-by-side comparison: effects, dosing ranges, side effects, regulatory status, and reconstitution.

Peptide A

GHK-Cu

Cosmetic

Copper-binding tripeptide with potent wound-healing, skin-remodeling, and gene-regulatory properties.

Peptide B

TB-500

Healing & Recovery

Synthetic fragment of Thymosin Beta-4 with potent tissue repair activity.

Typical vial

50 mg

Typical dose

200-500 mcg

Half-life

~30-60 minutes (plasma)

FDA status

Not FDA approved as a drug. Widely used as a cosmetic ingred…

Typical vial

5 mg

Typical dose

2000-5000 mcg

Half-life

~6-8 hours

FDA status

Not FDA approved for human use.

GHK-Cu effects

  • Stimulates collagen and elastin synthesis for skin rejuvenation
  • Promotes wound healing and tissue remodeling
  • Enhances angiogenesis and blood vessel formation
  • Modulates expression of over 4,000 genes involved in tissue repair
  • Provides antioxidant defense via superoxide dismutase activation
  • Reduces fine lines, wrinkles, and photodamage

TB-500 effects

  • Promotes wound healing and tissue repair
  • Reduces inflammation and fibrosis
  • Stimulates new blood vessel growth
  • Supports cardiac repair after ischemic injury
  • Enhances cell migration through actin upregulation

GHK-Cu side effects

  • Mild skin irritation with topical use (uncommon)
  • Injection site discomfort with subcutaneous administration
  • Uncommon metallic taste
  • Rare contact sensitivity in predisposed individuals

TB-500 side effects

  • Injection site irritation
  • Temporary head rush or lightheadedness
  • Mild lethargy
  • Headache

GHK-Cu dosing ranges

Skin rejuvenation (topical)

1-2% concentration · Once or twice daily · Ongoing

Systemic tissue support (SubQ)

200-500 mcg · Once daily · 4-6 weeks

Wound healing support (SubQ)

200-500 mcg · Once daily near wound site · 2-4 weeks

TB-500 dosing ranges

Acute injury healing

2000-5000 mcg · Twice weekly · 4-6 weeks

Maintenance and recovery

2000 mcg · Once weekly · 4-8 weeks

Full GHK-Cu guide → Full TB-500 guide →

GHK-Cu vs TB-500 — common questions

What is the difference between GHK-Cu and TB-500?

GHK-Cu: Copper-binding tripeptide with potent wound-healing, skin-remodeling, and gene-regulatory properties. Typical dose 200-500 mcg. TB-500: Synthetic fragment of Thymosin Beta-4 with potent tissue repair activity. Typical dose 2000-5000 mcg. Both fall under the Cosmetic and Healing & Recovery categories.

Can you stack GHK-Cu and TB-500?

Stacking GHK-Cu with TB-500 is a protocol-design question best raised with a clinician — it depends on your goal, current bloodwork, and whether both peptides target overlapping mechanisms. Both peptides should be tracked independently with separate injection sites and timing. PinnyPeptide supports multi-peptide stacks with automatic injection site rotation.

Which is dosed more frequently, GHK-Cu or TB-500?

GHK-Cu is typically dosed: Once or twice daily for Skin rejuvenation (topical); Once daily for Systemic tissue support (SubQ); Once daily near wound site for Wound healing support (SubQ). TB-500 is typically dosed: Twice weekly for Acute injury healing; Once weekly for Maintenance and recovery.

Are GHK-Cu and TB-500 FDA approved?

GHK-Cu: Not FDA approved as a drug. Widely used as a cosmetic ingredient without requiring drug approval for topical formulations. TB-500: Not FDA approved for human use.

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