Amyloid Beta_Dosage, benefits & legal status
Also known as beta-amyloid, amyloid beta peptide, A4 amyloid
The peptide that builds Alzheimer's plaques, sold as a lab reagent.
What is Amyloid Beta?
Plain language first. The technical label stays, but it never stands alone.Overview
The sticky peptide that clumps into Alzheimer's plaques. Labs use it to cause that damage on purpose, and it is not a treatment for anything.
Amyloid beta (Aβ) comprises peptides of roughly 39 to 43 residues cleaved from amyloid precursor protein, chiefly Aβ1-40 and the more aggregation-prone Aβ1-42. "A4" is an early name for the plaque-core peptide. The listing tracked here does not state which length it supplies. Synthetic Aβ is used as a reagent to generate oligomers, fibrils and plaque pathology in experimental models.
What it's used for
A laboratory reagent for modeling Alzheimer's disease. It has no use as a supplement or treatment.
How does Amyloid Beta work?
What it does in the body, and where.Amyloid beta is a normal product of the brain that becomes harmful when it clumps together.
- 01It is cut from a larger proteinEnzymes trim amyloid precursor protein, found on nerve cells, into short fragments. Amyloid beta is one of them.
- 02It sticks to itselfSingle copies pair up, then form small clusters and long fibers. The fibers collect into the plaques seen in Alzheimer's brains.
- 03Clusters can seed more clumpingAggregated amyloid beta can make fresh copies misfold, which is why contaminated growth hormone given decades ago appears to have passed the pathology on.
- 04That is why labs buy itAdding it to cells or animals produces Alzheimer's-like damage on demand, so drug candidates can be tested against it.
What else is it used for?
Each group carries its own evidence level.Approved means regulators have cleared it for that purpose. Investigational means it is in trials. Early research means it is being studied and is not established.
Injected into people
Investigational- Human trialIn the AN1792 trial, people with Alzheimer's received aggregated amyloid beta 1-42 with an immune-boosting adjuvant. Dosing stopped after 18 of 298 treated patients (6%) developed brain inflammation.
- Human trialOnly 59 of 300 patients produced the intended antibody response, and standard memory and function scores did not differ from placebo at 12 months.
Transmission
Research only- Human observationPeople treated as children with growth hormone taken from cadaver pituitary glands, some batches of which carried amyloid beta, went on to develop early-onset Alzheimer's disease decades later. The authors describe it as the first evidence of medically acquired Alzheimer's in living people.
Because it appears on peptide sites beside injectable products, amyloid beta can look like something people take. It is the peptide that builds Alzheimer's plaques. In people, a vaccine made from it caused brain inflammation, and contaminated growth hormone carrying it appears to have transmitted Alzheimer's pathology decades later.
The published record
Papers about Amyloid Beta · this compound only
Searched: AN1792, iatrogenic Alzheimer, iatrogenic cerebral amyloid angiopathy.
Left out: amyloid beta (the whole Alzheimer's literature, far past the ingest cap); A4 amyloid (historic name, pulls basic Alzheimer's research).
90 papers tagged human · 54 not reviews or lab · 10 clinical trial publications
How the compound was given: 5 applied to skin · 14 injected · 2 by mouth or rectal · 2 intranasal · 117 route not stated in the abstract
Read from each paper's indexing terms and abstract, by rule. A paper that mentions a cream studied a cream, not necessarily the product being sold.
1 registered trials · none with posted results
Furthest stage reached: Phase 2, stopped early
Counted from Europe PMC indexing, not read by a person; a human tag can land on reviews, commentary or lab papers; clinical trial publications is the narrower count. A preprint and its journal version count once. 136 papers and 1 trials held here.
At a glance
Four things to know about Amyloid Beta
How much, and do you cycle it?
The range, and whether you take breaks.No dose: a lab reagent, not applicable. Not applicable No range
It is not taken for any purpose, so no schedule exists.
Not applicableNo figure
Not a treatment, so no dosing half-life applies.
You can compare this against the whole library to see where it sits.
What does it cost?
Typical dose and cost, in plain numbers.The products priced here are not injected
It is not taken as a treatment. No treatment dose. Amyloid beta is a laboratory reagent, not a therapeutic peptide. Historical Alzheimer's vaccine trials injected 50–225 mcg of aggregated Aβ42 with an immune adjuvant, but the program was stopped after cases of brain inflammation. Those trial doses are not a personal-use protocol.
Amyloid Beta starts at $34.59 across 1 vendor.
1 listing, last read Nov 7, 2026. Shipping and card fees are not included.
How do you store it?
Before mixing, and after.Nothing to store: it is not taken as a treatment.
Amyloid Beta is not used as a medicine or a supplement, so no home storage question arises. Laboratory suppliers ship research material frozen and state their own handling conditions on the certificate that comes with it.
What are the side effects and cautions?
Known cautions and warnings for this compound.Solubility, computed: 26% charged residues, 45% hydrophobic. Water usually sufficient.
A first-pass rule from peptide manufacturers' guidance. It does not account for disulfide bridges, salt form or how the powder was dried, and it predicts what should be easy rather than what will happen in your vial.
Who should avoid it
- Any personal use: it is a reagent for creating disease in experimental models
Stop and get help
- Headache, confusion, fever or drowsiness after any exposure, which were the signs of brain inflammation in the vaccine trial
Common effects
- Not applicable: it is not taken for any effect
Where this page says nothing is established, that means nobody has studied it, not that a compound is safe.
Is Amyloid Beta approved?
And where the numbers on this page come from.No. Amyloid Beta is not approved for any use, anywhere. It is sold labeled for laboratory research only, and there is no legal route to buy it for human use.
- Approval statusResearch only
- RouteNot taken as a treatment
- Checked29 September 2026
- DoseNo dose has been established in people.
- Vial sizeFrom what vendors typically list; not a recommendation.
- SourcesOrgogozo JM, et al. Subacute meningoencephalitis in a subset of patients with AD after Aβ42 immunization. NeurologyGilman S, et al. Clinical effects of Aβ immunization (AN1792) in patients with AD in an interrupted trial. NeurologyBanerjee G, et al. Iatrogenic Alzheimer's disease in recipients of cadaveric pituitary-derived growth hormone. Nature Medicine
What has happened recently
Not approved for any use in people. Sold as a laboratory reagent.
You can compare this against the whole library, or read how to check a seller.
What else is like Amyloid Beta?
Others in Brain, mood and sleep, side by side.If you're weighing Amyloid Beta, it's worth reading Ziconotide, Trofinetide (Daybue), and Taltirelin (Ceredist) in the same class.
The peptide that builds Alzheimer's plaques, sold as a lab reagent.
- Dose
- No dose: a lab reagent
- How often
- Not applicable
The FDA-approved cone-snail peptide for severe chronic pain, delivered only into the spinal fluid.
- Dose
- 2.4 up to 19.2 mcg per day by continuous pump (label)
- How often
- Continuous infusion
An approved oral treatment for Rett syndrome, built from the first three amino acids of IGF-1 with one methyl group added.
- Dose
- 5,000 to 12,000 mg twice daily by weight (label)
- How often
- Twice daily
A modified TRH built to survive being swallowed and reach the brain. Approved in Japan since 2000 for ataxia; a Korean trial published in 2024 found an effect of under 1 point on a 40-point scale.
- Dose
- 5 mg per dose, 10 mg a day (Japanese and Korean labels)
- How often
- Twice daily, after morning and evening meals
Guides for this compound
- How to Reconstitute a Peptide
Mix peptide powder with bacteriostatic water, step by step.
- How to Read an Insulin Syringe
Read the units, convert to millilitres, and draw the exact dose.
- mcg vs mg: The Peptide Dosing Mistake to Avoid
Your vial says mg and your protocol says mcg. Here is the conversion and how to check it.
- How to Read a Peptide COA
What the purity number does and does not tell you, and how to spot an edited report.
- How to Vet a Peptide Vendor
Independent COAs, HPLC purity, and the red flags that mean walk away.
Sources
- Orgogozo JM, et al. Subacute meningoencephalitis in a subset of patients with AD after Aβ42 immunization. Neurology(2003)Brain inflammation in 18 of 298 patients given aggregated Aβ42 with adjuvant; dosing stopped.
- Gilman S, et al. Clinical effects of Aβ immunization (AN1792) in patients with AD in an interrupted trial. Neurology(2005)59 of 300 patients produced the target antibody response; no difference from placebo on standard cognitive and functional scales.
- Banerjee G, et al. Iatrogenic Alzheimer's disease in recipients of cadaveric pituitary-derived growth hormone. Nature Medicine(2024)Early-onset Alzheimer's in people given cadaver-derived growth hormone in childhood, attributed to amyloid-beta transmission.
Beyond these, 137 records are indexed for this compound. Browse the records