Research Bundles UK
18 products from 4 brands · free UK delivery · EU 3–7 days
Every Bundles & Stacks listing compared
Last reviewed · prices and listings checked by Free Muscle
Strength and pack size as stated by each manufacturer. Total milligrams = strength per capsule multiplied by capsules per pack. Price per milligram is calculated from the current price. A dash means the manufacturer does not state that figure.
| Brand | Listing | Strength | Pack | Total | Price | £ per capsule | Per mg | Availability |
|---|---|---|---|---|---|---|---|---|
| FreeMuscle | Bioreactive Bundle — MK-777 + RAD-150 + NitraGlyc | – | – | – | £150.00 | – | In stock | |
| FreeMuscle | Research Bundle — MK-677 + RAD-140 + YK-11 | – | – | – | £100.00 | – | In stock | |
| iMuscle | Ligandrol + Ibutamoren + Ostarine stack | – | 60 capsules | – | £114.99 | – | In stock | |
| Yakka Strength | Wolverine Stack — BPC-157 & TB-500 | – | 60 capsules | – | £89.99 | – | In stock | |
| Yakka Strength | RAD-140 & Enclomiphene Bundle | – | 60 capsules | – | £118.99 | – | In stock | |
| Yakka Strength | MK-677 + RAD-140 | – | 60 capsules | – | £59.99 | – | In stock | |
| Yakka Strength | MK-677 + BPC-157 + TB-500 Capsule Bundle | – | 60 capsules | – | £144.99 | – | In stock | |
| Yakka Strength | MK-677 & TB-500 Capsule Bundle | – | 60 capsules | – | £101.99 | – | In stock | |
| Yakka Strength | MK-677 & BPC-157 Capsule Bundle | – | 60 capsules | – | £97.99 | – | In stock | |
| Thoroughbred Labs | Research System — SLU-PP-332 & 5-Amino-1MQ | – | 60 capsules | – | £152.99 | – | In stock | |
| Thoroughbred Labs | Research System — BPC-157 & TB-500 | – | 60 capsules | – | £72.99 | – | In stock | |
| iMuscle | Testolone + YK-11 + Ibutamoren stack | – | 60 capsules | – | £129.99 | – | In stock | |
| iMuscle | Ostarine + Andarine + Cardarine stack | – | 60 capsules | – | £95.99 | – | In stock | |
| iMuscle | Ligandrol + Testolone + YK-11 stack | – | 60 capsules | – | £117.99 | – | In stock | |
| iMuscle | Cardarine + Testolone RAD-140 stack | – | 60 capsules | – | £76.99 | – | In stock | |
| iMuscle | Cardarine + Ostarine MK-2866 stack | – | 60 capsules | – | £68.99 | – | In stock | |
| iMuscle | Cardarine + Ibutamoren + Andarine stack | – | 60 capsules | – | £113.99 | – | In stock | |
| iMuscle | Cardarine GW-501516 + Ligandrol stack | – | 60 capsules | – | £70.99 | – | In stock |
This collection holds every multi-item bundle we sell, from our own label and from the Muscle Market brands Yakka Strength, Thoroughbred Labs and iMuscle. A bundle is a set of separate research listings packed together at one price. That is all it is. We make no claim that the compounds in a bundle act together, complement one another or produce any result in combination; they are grouped for convenience and to save you assembling the same basket by hand. Every item is sold to adults for laboratory research only.
What a research bundle is
A research bundle is two or three separate listings packed together and sold at one price, for convenience. None of the studies we cite on our single-compound pages tested the combinations packed in these bundles, so a bundle tells you nothing about how the compounds behave together, and we make no claim about using them together. The research compounds in these bundles are for laboratory research use only, not for human consumption, and are sold only to adults aged 18 or over; NitraGlyc, in the Bioreactive Bundle, is a food supplement.
What this collection covers
Free Muscle bundles
- Bioreactive Bundle: MK-777 (Acetamoren), RAD-150 (TLB-150) and NitraGlyc, the stimulant-free pre-workout food supplement, from the Bioreactive Series.
Yakka Strength bundles
- Wolverine Stack: BPC-157 and TB-500 capsules.
- RAD-140 and Enclomiphene.
- MK-677 and RAD-140.
- MK-677, BPC-157 and TB-500.
- MK-677 and TB-500.
- MK-677 and BPC-157.
Thoroughbred Labs and iMuscle bundles
- Thoroughbred Labs Research System: SLU-PP-332 and 5-Amino-1MQ.
- Thoroughbred Labs Research System: BPC-157 and TB-500.
- iMuscle Testolone, YK-11 and Ibutamoren.
- iMuscle Ostarine, Andarine and Cardarine, covering Ostarine, Andarine and Cardarine.
How to compare a bundle with single listings
Add up what the same items cost bought separately, then compare. Bundles are usually cheaper, but not always, and prices move. Check that the strength and capsule count of each item in the bundle match the single listings you are comparing, because a bundle can contain a different pack size. Then ask about batch certificates for each item, not just one. The price per milligram article covers the arithmetic.
Batch testing and certificates of analysis
Free Muscle-brand items in a bundle are assayed by Janoshik Analytical batch by batch, and each pack carries its own batch number; email us the numbers and we will send a certificate for each. For Yakka Strength, Thoroughbred Labs and iMuscle, a certificate is shown only where the manufacturer supplies one for the batch we hold. A generic document with no batch number is not a batch certificate. See how we test.
Where to buy research bundles in the UK: how to check a supplier
Whichever shop you buy research bundles from, check these five points before you order:
- A batch number and a certificate for that batch. The pack should carry a batch number, and the seller should be able to show a certificate of analysis for that same batch from a named laboratory, with the test date. Every Free Muscle-brand batch is assayed by Janoshik Analytical, and we send the certificate for your batch on request. For iMuscle, Thoroughbred Labs and Yakka Strength, a certificate is shown where the brand supplies one for the batch we hold. A bundle holds a separate pot for each compound, so ask for a certificate for each pot, matched to the batch number on that pot.
- The strength per capsule and the capsule count of each pot. With both figures you can work out the total milligrams in the pack and the price per milligram; the comparison table above does this for every listing here that states both. If a listing does not state one of them, ask the seller before you order.
- Research-use labelling and an age check. A research compound should be sold for laboratory research use only, not for human consumption, to adults aged 18 or over, with no dosing or usage advice. That is how every research compound in these bundles is sold here; NitraGlyc, in the Bioreactive Bundle, is a food supplement.
- Prices in pounds sterling and tracked UK dispatch. UK delivery from us is free and tracked on every order, with no minimum spend, and usually arrives 2-3 working days after dispatch; orders placed before 2pm Monday to Friday are processed the same working day.
- A clear returns policy. Unopened items can be returned to us within 30 days.
Brands on this page: Free Muscle, iMuscle, Thoroughbred Labs and Yakka Strength. The UK supplier checklist and how we test go into more detail.
Legal status in the UK
Every research compound in these bundles is unlicensed as a medicine (MHRA), is not an authorised food supplement and is sold to adults for laboratory research only, not for human consumption. SARMs, growth hormone secretagogues, peptides and metabolic modulators are prohibited under the WADA list. NitraGlyc, inside the Bioreactive Bundle, is a food supplement. Our SARMs research guide covers the wider legal picture.
Delivery and returns
Free Muscle is the trading name of FreeMuscle, a business registered in Andorra, with UK operations and dispatch in Scunthorpe. Every order ships free with UK tracking in plain packaging; EU delivery takes 3 to 7 working days. Orders placed before 2pm Monday to Friday are processed the same working day, and unopened items can be returned within 30 days. See shipping and guarantee. Customers must be 18 or over.
Related reading
- Muscle Market is live: five brands, one basket, one parcel
- MK-677 by brand: what actually differs when the molecule is the same
- How to Read a Certificate of Analysis (COA)
- SARMs vs Peptides: Choosing by Goal
- Related collections: Yakka Strength, Thoroughbred Labs, iMuscle, Free Muscle
Research compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.
Frequently asked questions
Are bundles cheaper than buying the items separately?
Usually, but not always, and prices change. Add up the single listings for the same items and compare before you decide. Also check that the strength and capsule count inside the bundle match the single packs you are comparing, since a bundle can use a different pack size. A bundle is a pricing convenience and nothing more.
Do the compounds in a bundle work better together?
We make no such claim. A bundle is a set of separate research listings packed at one price. Nothing on this site describes how compounds might be combined, and every item is sold to adults for laboratory research only, not for human consumption. Researchers design their own protocols; the bundle simply saves assembling the same basket by hand.
Does every item in a bundle come with a certificate?
For Free Muscle-brand items, yes: each pack carries its own batch number and is assayed by Janoshik Analytical, and we will send a certificate for each batch on request. For Yakka Strength, Thoroughbred Labs and iMuscle bundles, a certificate is shown only where the manufacturer supplies one for the batch we hold, so check the product page for each item.
Can I return one item from a bundle?
Unopened items can be returned within 30 days of delivery. Because a bundle is priced as a set, a partial return is handled case by case, so contact us with your order number before sending anything back and we will explain the options. Opened items cannot be resold and cannot be returned unless faulty. Our guarantee page has the full policy.
Which brands offer bundles?
At the time of writing: Free Muscle (the Bioreactive Bundle and the MK-677, RAD-140 and YK-11 Research Bundle), Yakka Strength (six two- and three-item peptide and SARM bundles), Thoroughbred Labs (two Research Systems) and iMuscle (two three-compound stacks). Each brand page lists its single-compound products alongside its bundles.
Is a bundle the same as a SARMs stack?
Some brands call their multi-compound packs stacks, and several listings here keep the brand's own product name. On Free Muscle a bundle is only separate listings packed together at one price: we give no advice on combining compounds, and none of the studies we cite tested these combinations. Research use only, 18+.
Which bundles contain both MK-677 and RAD-140?
At the time of writing: the Free Muscle Research Bundle (MK-677, RAD-140 and YK-11), Yakka Strength MK-677 + RAD-140, and the iMuscle Testolone + YK-11 + Ibutamoren pack (testolone is RAD-140 and ibutamoren is MK-677). Each listing states its contents, and the comparison table above shows the current prices.
How fast is UK delivery?
UK delivery is free and tracked on every order, with no minimum spend, and usually arrives 2-3 working days after dispatch. Faster tracked UK delivery costs £6 and usually takes 1-2 working days. Orders placed before 2pm Monday to Friday are processed the same working day.
Do you deliver to Romania and the rest of the EU?
Yes. Orders to Romania and other EU countries travel by our paid, tracked international service and usually arrive 3-7 working days after dispatch; delivery to the rest of the world usually takes 5-14 working days. Prices are in pounds sterling (GBP). Rules differ in other countries, so check local law before ordering for delivery abroad.