Side-by-side · Research reference

DihexavsSemaglutide

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

AAnimal-StrongHUMAN-REVIEWED7/28 cited

BFDA-ApprovedFlagship15/53 cited

Dihexa

Angiotensin IV Analogue · Pre-Clinical

Pre-clinicalDevelopment stage

Rodent onlyEvidence basisBenoist 2014

HGF/c-MetTarget systemWright 2015

Not established — animal studies only

Semaglutide

GLP-1 RA · FDA-Approved

0.25–2.4 mgWeekly doseWEGOVY (semaglutide) injection 2021

14.9%Body-weight ↓Wilding 2021

~7 daysHalf-lifeWEGOVY (semaglutide) injection 2021

SQ · Abdomen / thigh / arm · Once weekly

01Mechanism of Action

Parameter

Dihexa

Semaglutide

Primary target

c-Met receptor (HGF receptor tyrosine kinase)

GLP-1 receptor (GLP-1R)WEGOVY (semaglutide) injection 2021

Pathway

HGF/c-Met receptor activation → downstream signaling cascade → synaptogenesis and dendritic arborization

GLP-1R agonism → ↑glucose-dependent insulin secretion, ↓glucagon, ↓gastric emptying, ↓appetite via hypothalamic centresWilding 2021

Downstream effect

Induction of dendritic arborization, synapse formation, neurogenesis, and neuroprotection in rodent models

Improved glycemic control, reduced caloric intake, body-weight reduction, cardiovascular risk reductionWilding 2021

Feedback intact?

—

Glucose-dependent insulin release preserves physiological feedback

Origin

Small-molecule angiotensin IV analogue designed to activate HGF/c-Met systemWright 2015

Modified GLP-1(7-37) with two amino-acid substitutions and C-18 fatty-acid acylation for albumin binding and 168-h half-lifeWEGOVY (semaglutide) injection 2021

Antibody development

—

02Dosage Protocols

Parameter

Dihexa

Semaglutide

Human dosing

Not established — no human trials

—

Animal studies

Mouse/rat models only — dosing not translatable to humans

—

Evidence basis

Pre-clinical / Rodent models

FDA-approved · Phase 3 RCTsWilding 2021 WEGOVY (semaglutide) injection 2021

Clinical status

No Phase 1, 2, or 3 trials published

—

Standard dose (T2D, Ozempic)

—

0.5–1.0 mg / weekWEGOVY (semaglutide) injection 2021

Standard dose (weight, Wegovy)

—

2.4 mg / week (after 16-wk titration)WEGOVY (semaglutide) injection 2021 Wilding 2021

Frequency

—

Once weekly, same day each week

Titration schedule

—

0.25 → 0.5 → 1.0 → 1.7 → 2.4 mg over 16 weeks

Mitigates GI side effects.

Duration

—

Indefinite for chronic indication

Discontinuation results in weight regain.

Reconstitution

—

Pre-mixed pen device (commercial). Research lyophilised vial: bacteriostatic water per label.

Timing

—

Any time of day, with or without food

Half-life

—

~7 days (168 h)WEGOVY (semaglutide) injection 2021

04Side Effects & Safety

Parameter

Dihexa

Semaglutide

Human safety data

None available — no human clinical trials

—

Theoretical c-Met risks

c-Met receptor activation has been implicated in tumorigenesis; unknown cancer risk profile

—

Pre-clinical tolerability

Not systematically reported in available studies

—

GI symptoms

—

Nausea, vomiting, diarrhea, constipation (very common)Wilding 2021

Injection site reaction

—

Mild erythema, pruritus

Pancreatitis risk

—

Rare; discontinue if suspectedWEGOVY (semaglutide) injection 2021

Thyroid C-cell tumours

—

Boxed warning — contraindicated in MEN2 / personal or family MTC historyWEGOVY (semaglutide) injection 2021

Hypoglycemia

—

Low risk as monotherapy; elevated when combined with sulfonylureas / insulin

Gallbladder events

—

Increased cholelithiasis

Pregnancy / OB

—

ContraindicatedWEGOVY (semaglutide) injection 2021

Heart rate

—

Modest ↑ resting HR (~2-4 bpm)

Absolute Contraindications

Dihexa

·Not approved for human use — research compound only

Semaglutide

·Personal or family history of medullary thyroid carcinoma
·Multiple endocrine neoplasia syndrome type 2
·Pregnancy / breastfeeding
·Hypersensitivity to semaglutide

Relative Contraindications

Dihexa

·Theoretical contraindication: active or history of malignancy (c-Met pathway involvement in cancer)

Semaglutide

·Severe gastroparesis
·History of pancreatitis
·Diabetic retinopathy (may worsen with rapid glycemic improvement)

05Administration Protocol

Parameter

Dihexa

Semaglutide

1. Human administration

No established protocol. Dihexa has not been tested in human subjects. Animal studies used various routes (typically subcutaneous or intraperitoneal in rodents) not translatable to clinical use.

Commercial: pre-filled pen, no reconstitution. Research vial: per-label or bacteriostatic water.

2. Legal status

Pre-clinical research compound. Not approved by FDA or any regulatory authority for human use.

SQ — abdomen, thigh, or upper arm. Rotate sites weekly to avoid lipohypertrophy.

3. Timing

—

Once weekly, same day. Day can be changed if ≥2 days separate doses.

4. Storage

—

Pen: refrigerate 2–8 °C unopened; room temp ≤30 °C up to 56 days after first use.

5. Needle

—

Pen-supplied 31–34G needle. Research vial: 27–31G insulin syringe.

06Stack Synergy

Dihexa

— no documented stacks

Semaglutide

+ Tirzepatide

Weak

View Tirzepatide →

Combining two GLP-1 RA-class drugs is not clinically validated and risks additive GI toxicity. Tirzepatide's GIP component already provides complementary mechanism vs pure GLP-1; stacking with semaglutide adds receptor saturation but no synergy. NOT recommended.

Note: Stack not recommended — choose one GLP-1 RA
Primary benefit: (none — additive toxicity, no synergy)