Compare

GHK-Cu vs Retatrutide

Side-by-side observational reports from PeptIQ users. This compares self-reported patterns — not clinical head-to-head trials.

Observational reporting only — not medical advice. Does not recommend doses, protocols, or treatments.
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GHK-Cu

120 community reports

Positive 3% · Neutral 97% · Negative 0%

Most reported benefits

Mood
226
Recovery
226
Energy
1

Most reported side effects

Injection site irritation
222

Dose distribution

Median: 2000+ mcg · Most common: 2000+ mcg

0–25
1
25–50
16
50–100
0
100–200
0
200–400
4
400–600
0
600–1000
1
1000–2000
71
2000+
135

How repeat users are trending

Among repeat reporters, 89% said they felt similar to their last entry, 11% more positive, and 0% more negative.

Overall, repeat reporters leaned more positive than their previous entry.

Median gap between entries: 46 days · Based on 45 repeat reporters

Retatrutide

125 community reports

Positive 99% · Neutral 1% · Negative 0%

Most reported benefits

Appetite
222

Most reported side effects

Nausea
3

Dose distribution

Median: 2000+ mcg · Most common: 2000+ mcg

0–25
5
25–50
0
50–100
0
100–200
3
200–400
6
400–600
10
600–1000
5
1000–2000
80
2000+
113

How repeat users are trending

Among repeat reporters, 100% said they felt similar to their last entry, 0% more positive, and 0% more negative.

Overall, repeat reporters leaned similar or mixed compared to their previous entry.

Median gap between entries: 51 days · Based on 45 repeat reporters