PlainPill

MT2

People mainly take MT2 for skin & hair. Based on 15 first-hand reports and 29 meta-analyses & systematic reviews in the medical literature. Ranked #265 of 1,974 overall.

37
User score
Mostly positive
27% positive7% mixed0% negative67% unclear

Of reports that state an outcome, 79% are positive.

Clinical research
AStrong research base
29
meta-analyses
32
RCTs
3,926
papers
High-risk compound. Peptides are not approved as supplements, carry serious and sometimes irreversible risks, are banned in competitive sport and may be restricted where you live. Nothing here is a recommendation to use it.

What MT2 does, according to users

Of the people who reported each effect, the share who said it got better.

2 more with fewer than 3 reports
betterno changeworse

What the research says

Systematic reviews and meta-analyses from PubMed, with their published conclusions.

AStrong research base

3+ meta-analyses or systematic reviews and 10+ randomized controlled trials in humans. The grade measures how much human research exists — read the conclusions below for what it found.

J Back Musculoskelet Rehabil · 2017 · Meta-analysis / systematic review
The efficacy of manual therapy and exercise for treating non-specific neck pain: A systematic review

Conclusion: This systematic review updates the evidence for MT combined or not with exercise and/or usual medical care for different stages of NP and provides recommendations for future studies. Two majors points could be highlighted, the first one is that combining different forms of MT with exercise is better than MT or exercise alone, and the second one is that mobilization need not be applied at the symptomatic level(s) for improvements of NP patients. These both points may have clinical implications for reducing the risk involved with some MT techniques applied to the cervical spine.

PubMed 28826164 ↗
Diabetes Metab Syndr · 2025 · Meta-analysis / systematic review
The association between clock gene polymorphisms and type 2 diabetes: A systematic review and meta-analysis

Conclusion: Specific polymorphisms in circadian genes, including CRY2, MTNR1B, CLOCK, and PER3, were associated with glycemic parameters and type 2 diabetes risk. These associations may be influenced by lifestyle and environmental factors, and interventions targeting circadian alignment could potentially modify diabetes risk, although further research is needed.

PubMed 40850217 ↗
Sci Rep · 2014 · Meta-analysis / systematic review
Relationship between melatonin receptor 1B and insulin receptor substrate 1 polymorphisms with gestational diabetes mellitus: a systematic review and meta-analysis

Conclusion: In conclusion, our study found that the genetic polymorphisms rs10830963 and rs1387153 in MTNR1B and rs1801278 in IRS1 were associated with an increased risk of developing GDM. However, further studies with gene-gene and gene-environmental interactions should be considered.

PubMed 25146448 ↗

Dosage people report

As stated by users — not a recommendation. Follow the label or your doctor.

weekly/bi-weeklyas reported
as needed for tanningas reported
very low doseas reported
dailyas reported

Reported side effects

How often each side effect came up across all reports.

minor unspecified ×1sickness ×1

What users say

Verbatim quotes, shortened only — each links to the original discussion.

“I'm using Mt2 to mitigate UV damage from heavy sun exposure while I'm down in Mexico for the month. Definitely some minor side effects, though nothing all that serious.”
Source discussion ↗
“MT2 supposedly does. It also darkens your hair.”
Source discussion ↗
“MT2 or whatever other peptides make you horny”
Source discussion ↗
“No clue why ppl keep choosing 2”
Source discussion ↗
“MT2 weekly/bi-weekly (as you could probably tell lol)”
Source discussion ↗
Top discussions (5)

Other options for skin & hair

User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate