Peptide

SS-31

Also known as

Elamipretide · Elamipretide HCl · Bendavia · MTP-131 · MTP131 · Forzinity (FDA brand for Barth syndrome) · Szeto-Schiller peptide 31 · Szeto-Schiller 31 · D-Arg-Dmt-Lys-Phe-NH2

Community talk. May contain inaccuracies. Not medical advice. Not a protocol. Not for human or animal use.

What it is

Elamipretide	A synthetic four-amino-acid peptide, also called Bendavia or MTP-131, discussed for fatigue, steadier energy and recovery. It binds cardiolipin in mitochondrial membranes.
Research vials versus Forzinity	Biohacking discussion centers on subcutaneous injections. Forzinity has a narrow Barth-syndrome indication, rather than general anti-aging approval; its testing does not verify research vials or establish an equivalent oral amount.

Notes

A peptide aimed at mitochondrial membranes. SS-31 is elamipretide, also called Bendavia or MTP-131: a synthetic four-amino-acid peptide. It binds cardiolipin, a fat in the inner membrane of mitochondria—the cell structures that make usable energy. That target explains the energy and recovery interest; it does not prove a person’s fatigue comes from damaged mitochondria. FDA — FORZINITY prescribing information (Official context · Accessed 2026-09-30)

SS-31 is a synthetic peptide people discuss for fatigue, steadier energy and exercise recovery. Some describe easier mornings or more usable energy; others notice nothing or feel worse. Its mitochondrial target fuels longevity interest, while the prescription drug Forzinity has a separate, narrow disease use.

Injection discussion, with distinct products. The existing biohacking record centers on SubQ, meaning injection beneath the skin. Pharmaceutical Forzinity and research vials are different formulations; the drug’s testing cannot verify a vial’s contents. Oral products draw skepticism in the community record, with no equivalent oral amount established here.

Forzinity has a narrow disease indication. FDA granted accelerated approval for muscle strength in Barth syndrome at body weight of at least 30 kg, with confirmation required. Its label specifies 40 mg SubQ daily; it is not an approval for general anti-aging. FDA — accelerated approval for Barth syndrome (Official context · Accessed 2026-09-30) · FDA — FORZINITY prescribing information (Official context · Accessed 2026-09-30)

Source context — FDA — FORZINITY prescribing information: Disease/formulation-specific label, not evidence for research products or healthy-user benefit.

Source context — FDA — accelerated approval for Barth syndrome: Narrow accelerated approval; cannot establish general fatigue or longevity outcomes.

What people notice

Mornings and daytime energy	One 4 mg morning-injection user described less stiffness within minutes. Another daily user reported clean energy throughout the day at 5 mg, later 10 mg.
Exercise drive	A sponsored log describes better running and gym energy during the first week at 5 mg/day, alongside other compounds. It cannot isolate SS-31.
No benefit or feeling worse	Accounts include no change at 5 or 10 mg daily, high-dose nonresponse, fatigue or other adverse symptoms. A felt lift does not measure mitochondrial repair.

Notes

Easier mornings or steadier daytime energy. Deb555 described less morning stiffness within minutes of a 4 mg injection during nearly a month of daily use. Another biohacking commenter described clean energy throughout the day at 5 mg daily, later 10 mg. These are felt changes, not measurements of mitochondrial repair. Reddit r/Peptides — SS-31: Dosing and Results? (Community discussion · Accessed 2026-09-30) · Reddit r/Biohacking — SS-31 dosing (Community discussion · Accessed 2026-09-30)

Exercise drive can be hard to attribute. A sponsored EliteFitness log reported better running and gym energy within the first week at 5 mg daily, alongside several other compounds. Other accounts describe no noticeable benefit. The appeal is usable energy and recovery, but a stronger workout cannot isolate SS-31. EliteFitness — Peptides wellness log (Personal report · Accessed 2026-09-30) · Reddit r/Peptides — SS-31: Dosing and Results? (Community discussion · Accessed 2026-09-30)

The same daily amount can disappoint. On Eroids, Drift.Mode reports neither benefit nor side effects at 5 mg daily. PeptideCritic’s 10 mg no-change account sits beside high-dose nonresponse and reports of fatigue easing over weeks. Dose alone does not explain the outcome. Eroids — MOTS-C & SS-31 (Community discussion · Accessed 2026-09-30) · PeptideCritic — SS-31 (Elamipretide): Research Dosing Protocol (Community discussion · Accessed 2026-09-30)

Itching, pain and feeling worse deserve attention. A MESO-Rx author reported itching, tingling lips, aches and exhaustion at 2.5–3 mg, then improvement by day 12 amid other agents and allergy medication. Their detox explanation is unverified; discomfort is not proof of repair. MESO-Rx — SS-31 experience (Personal report · Accessed 2026-09-30)

Fatigue and autonomic symptoms appear too. The ME/CFS opening describes fatigue and GI symptoms after 1 mg, later possible improvement and another crash with overexertion. Another commenter reports palpitations and insomnia after 200 mcg. These accounts do not establish a cause or an adjustment phase. Reddit r/cfs — SS-31: your experiences? I'll share mine (Community discussion · Accessed 2026-09-30)

Source context — Reddit r/Peptides — SS-31: Dosing and Results?: Anonymous unverified products; injection mentioned, precise route not established for each report. Course expectations are not measured cardiovascular benefits.

Source context — Reddit r/Biohacking — SS-31 dosing: Relative dates displayed; no measured PK cited for 16-hour claim. Route not established in selected daily-dose comments.

Source context — EliteFitness — Peptides wellness log: Sponsored multi-agent log; simultaneous MOTS-c, retatrutide, GHK-Cu and HGH plus training changes. Precise SS-31 route unstated.

Source context — Eroids — MOTS-C & SS-31: Unverified reports, precise route unstated; forum contains promotion/procurement. MOTS-c adverse experiences are not assigned to SS-31.

Source context — PeptideCritic — SS-31 (Elamipretide): Research Dosing Protocol: Partial paginated thread; duplicate quotations counted once. Rat/research euphemisms do not verify human or animal use; exact route not stated. Preparation instructions excluded.

Source context — MESO-Rx — SS-31 experience: Multiple agents and allergy medication disclosed; exact injection route not established. Detox/inflammation explanations are user interpretation.

Source context — Reddit r/cfs — SS-31: your experiences? I'll share mine: Self-reported illness, pacing, co-treatments and product identity; injection context, exact route not stated. Same-author edits are one chronology, not independent successes.

Doses people talk about

SubQ chart amounts	The saved charts discuss 5–10 mg total daily, with separate 2–5 mg initial, 1–2 mg tune-up and 10–20 mg daily claims. These do not establish a healthy-user benefit threshold.
Separate individual totals	One account uses 4 mg daily by injection; another reports 8–20 mg/day divided into two or three injections. Exact injection routes were unstated in those posts.
Intermittent or low patterns	Separate charts list 0.5 mg daily, five days on/two off, or 5 mg twice weekly. A commenter reports 1 mg Monday, Wednesday and Friday. These patterns are not equivalent exposure.
Higher amounts can disappoint	The record includes 10–30 mg short runs and 20–40 mg/day trial-matching talk. One route-unstated report found no felt difference after 50 mg/day for over two months.

Notes

SubQ charts: 5–10 mg total daily, with lower and higher camps. The existing record includes 2–5 mg once daily initially, 1–2 mg tune-up claims, and 10–20 mg daily accounts. September forum discussion still debates these bands. None establishes the amount needed for healthy-user benefit. Reddit r/Biohacking — SS-31 Dosing? (Community discussion · Accessed 2026-09-30)

Individual reports: 4 mg daily; 8–20 mg daily divided. The 4 mg morning-injection account differs from a commenter reporting 8–20 mg total daily split into two or three injections after months of use. Exact route was not specified in those posts; neither is a verified SubQ comparison. Reddit r/Peptides — SS-31: Dosing and Results? (Community discussion · Accessed 2026-09-30) · Reddit r/cfs — SS-31: your experiences? I'll share mine (Community discussion · Accessed 2026-09-30)

Intermittent and very low amounts also circulate. Preserved charts include 500 mcg (0.5 mg) daily, five days on/two off, and 5 mg twice weekly. A reviewed commenter reports 1 mg on Monday, Wednesday and Friday. These are competing patterns, not equivalent exposure or proof that less works. Reddit r/Biohacking — SS-31 dosing (Community discussion · Accessed 2026-09-30)

Escalation is not evidence of greater benefit. Older accounts include 10–30 mg short runs and 20–40 mg daily trial-matching talk. PeptidePete reported no felt difference after 50 mg daily for over two months. That report’s route is unstated; the disease-trial number is not a wellness target. PeptideCritic — SS-31 (Elamipretide): Research Dosing Protocol (Community discussion · Accessed 2026-09-30)

Source context — Reddit r/Biohacking — SS-31 Dosing?: Mixed personal experience and forceful advice. Half-life quotation explicitly draws on animal kinetics/reviews; original studies behind that quotation not inspected.

Source context — Reddit r/Biohacking — SS-31 dosing: Relative dates displayed; no measured PK cited for 16-hour claim. Route not established in selected daily-dose comments.

Half-life, onset & duration

Felt onset	Reports span minutes for morning stiffness, the first week for exercise energy and subtler changes at 1–2 weeks.
Felt duration	All-day energy is reported during repeated use, while an initial boost became subtler for another user. Claims of carryover or fading over days to weeks do not establish a dependable single-dose or after-stopping window.
Half-life	The saved prior FDA-review summary records roughly 3–4 hours for human plasma; that PDF was not reopened during the article review. The forum's 16-hour claim is unsupported, and membrane-effect lore is not measured tissue half-life.
Blood peak	The saved label gives 0.5–1 hour. This is different from the time a person first notices energy or stiffness changes.

Notes

Minutes, the first week, or no change. The morning-injection account claims relief within minutes; the sponsored gym log describes a first-week change. Preserved reports put subtler changes at one to two weeks, while some full courses produce none. A blood peak is a different endpoint. Reddit r/Peptides — SS-31: Dosing and Results? (Community discussion · Accessed 2026-09-30) · EliteFitness — Peptides wellness log (Personal report · Accessed 2026-09-30)

All-day energy is reported; a dependable single-dose window is unknown. One biohacking account describes energy across the day during repeated use. A longer-running commenter says the initial energy boost became subtler over recent weeks. Neither measures one injection’s benefit duration. Reddit r/Biohacking — SS-31 dosing (Community discussion · Accessed 2026-09-30) · Reddit r/cfs — SS-31: your experiences? I'll share mine (Community discussion · Accessed 2026-09-30)

After stopping, persistence remains disputed. Preserved anecdotes describe energy fading over days to weeks. Current discussion argues for effects only during exposure versus longer carryover, without demonstrating either as a reliable healthy-user outcome. Reddit r/Biohacking — SS-31 Dosing? (Community discussion · Accessed 2026-09-30)

Clinical outcomes and kinetics answer different questions. MMPOWER-3 found no primary walking/fatigue benefit at 40 mg SubQ daily for 24 weeks in primary mitochondrial myopathy. The previous card’s FDA review records roughly 3–4-hour human plasma half-life; that PDF could not be reopened here. Label blood peak is 0.5–1 hour, not felt onset. Karaa et al. — MMPOWER-3 randomized trial (Official context · Accessed 2026-09-30) · FDA integrated review — prior preserved SS-31 pharmacokinetic context (Official context · Accessed 2026-09-30) · FDA — FORZINITY prescribing information (Official context · Accessed 2026-09-30)

16 hours is an unsupported forum claim. Two commenters use it to debate daily versus alternate-day use without supplying a measured source. It does not establish human clearance. Reddit r/Biohacking — SS-31 dosing (Community discussion · Accessed 2026-09-30)

2–4 hours is repeated with animal/review origins. Another commenter explicitly refers to rats, dogs and monkeys and review estimates. This is study-derived talk, not a community human measurement. Longer membrane-effect lore is also not a measured tissue half-life. Reddit r/Biohacking — SS-31 Dosing? (Community discussion · Accessed 2026-09-30)

Source context — EliteFitness — Peptides wellness log: Sponsored multi-agent log; simultaneous MOTS-c, retatrutide, GHK-Cu and HGH plus training changes. Precise SS-31 route unstated.

Source context — Reddit r/Biohacking — SS-31 dosing: Relative dates displayed; no measured PK cited for 16-hour claim. Route not established in selected daily-dose comments.

Source context — Karaa et al. — MMPOWER-3 randomized trial: Genetically confirmed primary mitochondrial myopathy; not healthy-user results. PubMed/PMC alternatives blocked; UCL full PDF accessible.

Source context — FDA integrated review — prior preserved SS-31 pharmacokinetic context: Fresh opens returned internal errors. Approximately 3–4-hour value retained from the exact previously reviewed profile, not claimed newly inspected; archived review date 2026-09-07.

Source context — FDA — FORZINITY prescribing information: Disease/formulation-specific label, not evidence for research products or healthy-user benefit.

Cycles people discuss

Four-to-twelve-week charts	Community calendars include 4–8 or 8–12 weeks, 2–4-week breaks and 12 weeks on/4 off. They reflect convenience, cost and injections rather than an established tolerance rule.
Short blocks or longer use	One user describes four weeks before eight weeks of MOTS-c; others discuss 1–2 mg daily for 8–12 weeks or describe use over 120 days. Longer use does not establish safety or lasting repair.
Sequence varies	Charts add MOTS-c after one or two SS-31 weeks, overlap them or reverse the order. No best sequence is demonstrated.

Notes

Four to twelve weeks appears in charts; breaks vary. The existing record includes 4–8 or 8–12 weeks, breaks of 2–4 weeks, and 12 weeks on/4 off. Those are community convenience patterns shaped by cost and injections, not an established tolerance rule.

Short blocks and long use both have advocates. Gainz411 describes four weeks of SS-31 before eight weeks of MOTS-c. A September commenter discusses 1–2 mg daily for 8–12 weeks; a 2024 reply describes 2 mg over 120 days. Longer use does not establish safety or lasting repair. Eroids — MOTS-C & SS-31 (Community discussion · Accessed 2026-09-30) · Reddit r/Biohacking — SS-31 Dosing? (Community discussion · Accessed 2026-09-30) · Reddit r/Peptides — SS-31: Dosing and Results? (Community discussion · Accessed 2026-09-30)

Sequence is lore, not a required reset. Earlier charts add MOTS-c after one or two weeks of SS-31; others reverse or overlap them. There is no demonstrated best sequence in these accounts.

Source context — Eroids — MOTS-C & SS-31: Unverified reports, precise route unstated; forum contains promotion/procurement. MOTS-c adverse experiences are not assigned to SS-31.

Stacks

MOTS-c and humanin	The main mitochondrial stack pairs SS-31 with MOTS-c; some add humanin or related peptides. The mechanism story does not establish combined human benefit.
NAD-axis compounds and supplements	NMN, NR, NAD+, CoQ10/ubiquinol, PQQ and ALA appear in energy stacks. Their co-use prevents isolating SS-31's contribution.
Separate versus mixed injections	Some users keep SS-31 and MOTS-c injections separate because compatibility is unproven. A co-use report does not establish that mixing in one syringe is stable.

Notes

Mito triad: SS-31 + MOTS-c + humanin (or humanin analogs / SHLP-class talk) in advanced longevity threads. [community]

Stacks make an energy story difficult to untangle. MOTS-c, humanin, NAD-axis compounds, CoQ10 and PQQ appear beside SS-31 in the community record. Some use separate injections because compatibility is unproven. Changes in sleep, pacing and training add further uncertainty; the engine-and-fuel analogy is a story about mechanism, not proof of synergy.

NAD+ axis: NMN, NR, or injectable/IV NAD+ layered under SS-31 — heavily confounded “energy stack.” [community]

CoQ10 / ubiquinol + PQQ + ALA: Non-peptide mito supplements frequently layered; CoQ10 framed as electron carrier while SS-31 stabilizes complexes. [community]

Clinic energy protocols: Examples combine NAD+ IV 1–2×/week + MOTS-c 2–3×/week + SS-31 3–5×/week — multi-factor and not isolatable. [community]

Separate vs mixed syringes: Most discussion prefers separate SC injections rather than mixing SS-31 and MOTS-c in one pen/syringe (stability/compatibility unproven in community practice). [community]

Watch for

Itching, pain and exhaustion	One 2.5–3 mg account reports itching, tingling lips, aches and exhaustion, later improvement amid other agents and allergy medication. Calling it detox does not establish repair.
Low amounts can feel worse	A ME/CFS account reports fatigue and GI symptoms after 1 mg; another reports palpitations and insomnia after 200 mcg. These do not establish an expected adjustment phase.
Allergy and unverified products	The label warns of serious hypersensitivity requiring emergency care. Research-vial contents are unverified; kidney impairment and pregnancy require context beyond wellness charts.
Disease-trial limits	MMPOWER-3 found no primary walking/fatigue benefit at 40 mg SubQ daily for 24 weeks in primary mitochondrial myopathy. Disease-study dosing is not a wellness target.

Notes

Allergic reactions and product uncertainty are separate risks. The label warns of serious hypersensitivity requiring emergency care. Community vial identity and fill are unverified; pharmaceutical safety data cannot certify them. Kidney impairment and pregnancy also require context beyond wellness charts. FDA — FORZINITY prescribing information (Official context · Accessed 2026-09-30)

Source context — MESO-Rx — SS-31 experience: Multiple agents and allergy medication disclosed; exact injection route not established. Detox/inflammation explanations are user interpretation.

Source context — FDA — FORZINITY prescribing information: Disease/formulation-specific label, not evidence for research products or healthy-user benefit.

Full notes

What SS-31 is

A peptide aimed at mitochondrial membranes. SS-31 is elamipretide, also called Bendavia or MTP-131: a synthetic four-amino-acid peptide. It binds cardiolipin, a fat in the inner membrane of mitochondria—the cell structures that make usable energy. That target explains the energy and recovery interest; it does not prove a person’s fatigue comes from damaged mitochondria. Official context
Injection discussion, with distinct products. The existing biohacking record centers on SubQ, meaning injection beneath the skin. Pharmaceutical Forzinity and research vials are different formulations; the drug’s testing cannot verify a vial’s contents. Oral products draw skepticism in the community record, with no equivalent oral amount established here. Community

Benefits and how it may feel

Easier mornings or steadier daytime energy. Deb555 described less morning stiffness within minutes of a 4 mg injection during nearly a month of daily use. Another biohacking commenter described clean energy throughout the day at 5 mg daily, later 10 mg. These are felt changes, not measurements of mitochondrial repair. Reddit Reddit
Exercise drive can be hard to attribute. A sponsored EliteFitness log reported better running and gym energy within the first week at 5 mg daily, alongside several other compounds. Other accounts describe no noticeable benefit. The appeal is usable energy and recovery, but a stronger workout cannot isolate SS-31. Personal report Reddit

Doses people discuss

Reported amounts describe discussion, not instructions. mg means milligrams; mcg means micrograms.

SubQ charts: 5–10 mg total daily, with lower and higher camps. The existing record includes 2–5 mg once daily initially, 1–2 mg tune-up claims, and 10–20 mg daily accounts. September forum discussion still debates these bands. None establishes the amount needed for healthy-user benefit. Community Reddit
Individual reports: 4 mg daily; 8–20 mg daily divided. The 4 mg morning-injection account differs from a commenter reporting 8–20 mg total daily split into two or three injections after months of use. Exact route was not specified in those posts; neither is a verified SubQ comparison. Reddit Reddit
Intermittent and very low amounts also circulate. Preserved charts include 500 mcg (0.5 mg) daily, five days on/two off, and 5 mg twice weekly. A reviewed commenter reports 1 mg on Monday, Wednesday and Friday. These are competing patterns, not equivalent exposure or proof that less works. Community Reddit
Escalation is not evidence of greater benefit. Older accounts include 10–30 mg short runs and 20–40 mg daily trial-matching talk. PeptidePete reported no felt difference after 50 mg daily for over two months. That report’s route is unstated; the disease-trial number is not a wellness target. Community PeptideCritic community

Half-life

16 hours is an unsupported forum claim. Two commenters use it to debate daily versus alternate-day use without supplying a measured source. It does not establish human clearance. Reddit
2–4 hours is repeated with animal/review origins. Another commenter explicitly refers to rats, dogs and monkeys and review estimates. This is study-derived talk, not a community human measurement. Longer membrane-effect lore is also not a measured tissue half-life. Reddit Community

Onset: when people notice a change

Minutes, the first week, or no change. The morning-injection account claims relief within minutes; the sponsored gym log describes a first-week change. Preserved reports put subtler changes at one to two weeks, while some full courses produce none. A blood peak is a different endpoint. Reddit Personal report Community

Duration: how long a change lasts

All-day energy is reported; a dependable single-dose window is unknown. One biohacking account describes energy across the day during repeated use. A longer-running commenter says the initial energy boost became subtler over recent weeks. Neither measures one injection’s benefit duration. Reddit Reddit
After stopping, persistence remains disputed. Preserved anecdotes describe energy fading over days to weeks. Current discussion argues for effects only during exposure versus longer carryover, without demonstrating either as a reliable healthy-user outcome. Community Reddit

Cycles and breaks

Four to twelve weeks appears in charts; breaks vary. The existing record includes 4–8 or 8–12 weeks, breaks of 2–4 weeks, and 12 weeks on/4 off. Those are community convenience patterns shaped by cost and injections, not an established tolerance rule. Community
Short blocks and long use both have advocates. Gainz411 describes four weeks of SS-31 before eight weeks of MOTS-c. A September commenter discusses 1–2 mg daily for 8–12 weeks; a 2024 reply describes 2 mg over 120 days. Longer use does not establish safety or lasting repair. Eroids Reddit Reddit
Sequence is lore, not a required reset. Earlier charts add MOTS-c after one or two weeks of SS-31; others reverse or overlap them. There is no demonstrated best sequence in these accounts. Community

What to watch for

Itching, pain and feeling worse deserve attention. A MESO-Rx author reported itching, tingling lips, aches and exhaustion at 2.5–3 mg, then improvement by day 12 amid other agents and allergy medication. Their detox explanation is unverified; discomfort is not proof of repair. Personal report
Fatigue and autonomic symptoms appear too. The ME/CFS opening describes fatigue and GI symptoms after 1 mg, later possible improvement and another crash with overexertion. Another commenter reports palpitations and insomnia after 200 mcg. These accounts do not establish a cause or an adjustment phase. Reddit
Allergic reactions and product uncertainty are separate risks. The label warns of serious hypersensitivity requiring emergency care. Community vial identity and fill are unverified; pharmaceutical safety data cannot certify them. Kidney impairment and pregnancy also require context beyond wellness charts. Official context Community

Supporting clinical context

Forzinity has a narrow disease indication. FDA granted accelerated approval for muscle strength in Barth syndrome at body weight of at least 30 kg, with confirmation required. Its label specifies 40 mg SubQ daily; it is not an approval for general anti-aging. Official context Official context
Clinical outcomes and kinetics answer different questions. MMPOWER-3 found no primary walking/fatigue benefit at 40 mg SubQ daily for 24 weeks in primary mitochondrial myopathy. The previous card’s FDA review records roughly 3–4-hour human plasma half-life; that PDF could not be reopened here. Label blood peak is 0.5–1 hour, not felt onset. Official context Official context Official context

Community experiences and disagreements

The same daily amount can disappoint. On Eroids, Drift.Mode reports neither benefit nor side effects at 5 mg daily. PeptideCritic’s 10 mg no-change account sits beside high-dose nonresponse and reports of fatigue easing over weeks. Dose alone does not explain the outcome. Eroids PeptideCritic community
Stacks make an energy story difficult to untangle. MOTS-c, humanin, NAD-axis compounds, CoQ10 and PQQ appear beside SS-31 in the community record. Some use separate injections because compatibility is unproven. Changes in sleep, pacing and training add further uncertainty; the engine-and-fuel analogy is a story about mechanism, not proof of synergy. Community
Morning, evening and training-time preferences differ. The community record includes morning or pre-session use; evening appears when local discomfort interferes with training. It supplies no established timing winner or locked fasting rule. These preferences do not make SS-31 a stimulant pre-workout. Community