Side-by-side · Research reference

SNAP-8vsTesofensine

Side-by-side comparison across mechanism, dosage, evidence, side effects, administration, and stack synergies. Citations on every claim where available.

AHuman-MechanisticHUMAN-REVIEWED8/46 cited

BPhase 3AUTO-DRAFTED10/40 cited

SNAP-8

Synthetic Octapeptide · Cosmetic Topical

TopicalRoute

8-AAPeptide length

SNAREPrimary target

Topical · Facial application · Twice daily

Tesofensine

SNDRI · Phase 3 obesity candidate

0.25–0.5 mgDaily doseAstrup 2008

9.2 kgWeight ↓ (24 wk)Astrup 2008

Phase 3Evidence levelAstrup 2008

Oral · Once daily morning

01Mechanism of Action

Parameter

SNAP-8

Tesofensine

Primary target

SNARE complex (SNAP-25 competitive binding site)

Serotonin / norepinephrine / dopamine transporters (SERT / NET / DAT)Astrup 2008

Pathway

Acetyl octapeptide-3 → SNARE complex disruption → Reduced vesicular fusion → Decreased acetylcholine release → Muscle relaxation

Triple monoamine reuptake inhibition → ↑synaptic 5-HT, NE, DA → appetite suppression + thermogenesisAstrup 2008

Downstream effect

Transient reduction in neuromuscular signal transmission, decreased muscle contraction amplitude, wrinkle depth reduction

Strong appetite suppression, mild thermogenic effect, weight lossAstrup 2008

Feedback intact?

N/A — topical cosmetic, no systemic endocrine axis

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Origin

Synthetic peptide derived from N-terminal fragment of SNAP-25 protein (synaptosomal-associated protein 25 kDa)

Small molecule developed by NeuroSearch (Denmark) for CNS indications, repurposed for obesityAstrup 2008

Antibody development

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02Dosage Protocols

Parameter

SNAP-8

Tesofensine

Typical concentration

2–10% in cosmetic formulationsLupin 2024 Raikou 2017

Commercial products typically use 5–10%.

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Application frequency

Twice daily (morning and evening)Lupin 2024

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Treatment duration

20–60 days for visible effectRaikou 2017

Skin microtopography improvements measured at 20-day intervals.

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Formulation type

Oil-in-water emulsion, serum, cream

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Application site

Facial skin — glabellar lines, crow's feet, forehead

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Evidence basis

RCT, in vitro skin penetration studies

Phase 2b + ongoing Phase 3Astrup 2008

Onset of effect

Visible reduction in wrinkle depth by day 20–28Raikou 2017

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Standard dose

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0.25–0.5 mg / dayAstrup 2008

Frequency

—

Once daily, morning

Lower / starter dose

—

0.125 mg / day

Duration

—

24 weeks per studied cycle

Form

—

Oral capsule

Timing

—

Morning to avoid sleep disruption

Half-life

—

~9 days (very long)

03Metabolic / Fat Loss Evidence

04Side Effects & Safety

Parameter

SNAP-8

Tesofensine

Cytotoxicity

Concentration-dependent antiproliferative effect observed in vitro; IC50 ~10 mg/mL (argireline, 6-AA analogue)

Commercial formulations typically use 0.05–0.1 mg/mL, well below cytotoxic threshold.

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Skin irritation

Minimal; well-tolerated in clinical use

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Peptide oxidation

Methionine residue susceptible to oxidation in formulation; may reduce efficacyKluczyk 2021

Formulation stability issue, not a direct adverse effect.

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Systemic absorption

Negligible; peptide remains in stratum corneum and epidermisKraeling 2015

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Hypersensitivity

Rare; no widespread allergic reactions reported

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Heart rate / BP

—

Dose-dependent ↑ HR + BPAstrup 2008

Insomnia

—

Dose-related; mitigate with morning timing

Dry mouth

—

Common

Nausea

—

Common

Mood changes

—

Anxiety / agitation possible

Cardiovascular events

—

Phase 3 trial monitoring; not yet FDA-cleared

Pregnancy / OB

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Contraindicated

Absolute Contraindications

SNAP-8

·Known hypersensitivity to acetyl octapeptide-3 or formulation excipients

Tesofensine

·Pregnancy / breastfeeding
·Severe cardiovascular disease
·Concurrent MAOI use

Relative Contraindications

SNAP-8

·Active skin infections or open wounds at application site
·Neuromuscular disorders (theoretical concern, no documented cases)

Tesofensine

·Hypertension
·Anxiety disorder
·Insomnia

05Administration Protocol

Parameter

SNAP-8

Tesofensine

1. Cleansing

Wash face with gentle cleanser and pat dry. Remove makeup and surface oils to optimize peptide contact.

Oral capsule (investigational; not commercial).

2. Application

Apply 1–2 drops or pea-sized amount of SNAP-8 serum or cream to target areas (forehead, glabellar lines, crow's feet). Gently massage until absorbed.

Swallow whole with water, morning only.

3. Frequency

Twice daily — morning and evening. Allow 2–3 minutes for absorption before applying additional skincare products.

Morning to mitigate insomnia. Do not dose evening.

4. Layering

Apply before heavier creams or occlusive moisturizers. Peptides penetrate best from water-based serums on clean skin.

Room temp ≤25 °C, dry place.

5. Storage

Store at room temperature, away from direct sunlight. Refrigeration may extend shelf life of formulations containing unstable peptides.

Monitor BP + HR + mood. Avoid stimulants + MAOIs.

6. Duration

Consistent use for 20–60 days required for visible wrinkle reduction. Effects are temporary and reverse upon discontinuation.

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