COMPARISON
Difelikefalin vs GHK-Cu
5 attributes held for at least one of the two. 5 differ. Each value carries the register it came from and the date that register was read.
Answer
Difelikefalin is authorised or registered in 7 and GHK-Cu in 0 of the 10 registers read. Difelikefalin: highest phase Phase 3 (1 phase 3 trial, 0 with posted results). GHK-Cu: highest phase Phase 4 (after approval). 0 registered trials include both.
States no view on which is preferable, safer or more effective. Not medical advice.
| Difelikefalin | GHK-Cu | |
|---|---|---|
| Registered trials differs | 25 clinicaltrials.gov · 2026-10-03 | 3 clinicaltrials.gov · 2026-10-03 |
| FDA label differs | FDA-approved: Korsuva openfda · 2026-10-03T17:23:44.062Z | Not checked no record of "fdaLabel" for ghk-cu |
| EU authorisation differs | Authorised ema · 2026-10-03 | Nothing on record ema read 2026-08-31 |
| EU authorised on differs | 2022-04-25 ema · 2026-10-03 | Not checked no record of "authorisedOn" for ghk-cu |
| ATC code differs | V03AX ema · 2026-10-03 | Not checked no record of "atcCode" for ghk-cu |
SIDE EFFECTS
Most common side effects, each beside its own placebo
| Side effect | Difelikefalin | placebo | GHK-Cu | placebo |
|---|---|---|---|---|
| Hyperkalaemia | 17.7% | 17.3% | - | - |
| Dialysis hypotension | 13.8% | 10.3% | - | - |
| Hypotension | 13.8% | 9.5% | - | - |
| Muscle spasms | 12.5% | 10.7% | - | - |
| Upper respiratory tract infection | 9.5% | 10.3% | - | - |
| Dizziness | 9.5% | 5.8% | - | - |
| Diarrhoea | 5.6% | 3.7% | - | - |
| Constipation | 5.6% | 2.1% | - | - |
| Palpitations | 5.2% | 4.9% | - | - |
| Hypocalcaemia | 4.3% | 1.6% | - | - |
Trial register Difelikefalin: 1 placebo-controlled trials; GHK-Cu: 0. Each peptide is compared with placebo in its own trials, not with the other: a dash means the event is not in that peptide's top list. Difelikefalin side effects · GHK-Cu side effects
LEGAL STATUS
Approval in each country read
| Country | Difelikefalin | GHK-Cu | Register |
|---|---|---|---|
| United States | FDA-approved | Not on the register | Regulator FDA |
| European Union | Authorised | Not on the register | Regulator EMA |
| United Kingdom | Authorised | Not on the register | Regulator MHRA |
| Canada | Authorised | Not on the register | Regulator Health Canada |
| Australia | Registered | Status unknown | Regulator TGA |
| Switzerland | Authorised | Not on the register | Regulator Swissmedic |
| Brazil | Not on the register | Not on the register | Regulator ANVISA |
| Serbia | Not on the register | Not on the register | Regulator ALIMS |
| Singapore | Registered | Not on the register | Regulator HSA |
| Turkey | Not on the register | Not on the register | Regulator TITCK |
Values reproduce public registers on the dates shown. This comparison states no view on which compound is preferable, safer or more effective. Not medical, legal or regulatory advice.
WEEKLY
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New trials, approvals and enforcement actions. One email a week.