NSI-189 Price Comparison across 3 vendors
Lowest price: $35.99 for 20mg at SwissChems.
Compare NSI-189 prices from every vendor on Peptideals that sells it, with each vendor's code already applied. Only in stock listings are shown, and prices update as vendors change them. For research use only.
Best NSI-189 price by size
The cheapest in-stock option for every size, with the vendor's code already applied.
| Size | Vendors | Cheapest at | Code | Price with code | Per mg | |
|---|---|---|---|---|---|---|
| 20mg | 3 | SwissChems | PEPTIDEALS | $35.99$39.99 | $1.80 |
Compare every NSI-189 listing
Filter by size, format and vendor. Prices include each vendor's code.
Best NSI-189 deals right now
The biggest discounts from vendors selling NSI-189.
How to pay less for NSI-189
Compare the final price
List prices are misleading. Every price on this page already includes the vendor's code, so the cheapest result is the cheapest checkout.
How we compare prices
- Every price includes the vendor's Peptideals code
- Sales and stacked codes are tested in a real cart before we show them
- Only in-stock listings, from vendors that passed our COA check
Watch for weekend deals
BOGO and buy 2 get 1 free sales can cut the price further. We flag them on the deals page and in our free deal alerts.
Same compound, different names
Many vendors list NSI-189 under their own names or codes. We group them so you see every listing:
NSI-189 price FAQ
What is the cheapest NSI-189 right now?
The lowest price on Peptideals today is $35.99 for 20mg at SwissChems with code PEPTIDEALS. Prices and codes change often, so check the live table before you buy.
What is the best NSI-189 price per mg?
Among sizes sold by several vendors, 20mg at SwissChems is the best value right now at $1.80 per mg.
Are there NSI-189 coupon codes?
Yes. 3 vendors on Peptideals sell NSI-189, and the prices shown already include our code for each one. Some codes stack with vendor sales for bigger discounts.
Why do vendors use different names for NSI-189?
Many research vendors list NSI-189 under their own product names or codes. We group them so you can compare every listing in one place, including NSI-189 Phosphate, NSI-189 Phosphate (20mg/capsule), 60 Capsules, NSI-189 Phosphate – Powder, 1 gram.
Does Peptideals sell NSI-189?
No. We compare prices and deals from independent vendors. We do not sell, ship or handle any products.
Related price comparisons
Peptideals is a price comparison platform for research purposes only. We do not sell, ship, distribute or handle any products. All compounds are for in vitro laboratory research only. Prices and availability change often; always confirm the final price at checkout.

