Bioreactive Series
Free Muscle's Bioreactive Series: NitraGlyc, a stimulant-free food supplement, and the research compounds MK-777, RAD-150 and PCT. Research use only, 18+.
Last reviewed · prices and listings checked by Free Muscle
The Bioreactive Series is Free Muscle's own-label line. It brings together two research compounds, MK-777 (Acetamoren) and RAD-150 (TLB-150), a stimulant-free pre-workout food supplement, NitraGlyc, a PCT blend, and a bundle that packs the three Bioreactive products into one parcel. Every batch is assayed by Janoshik Analytical, an independent laboratory, with the Certificate of Analysis available on request. This page explains what each item is, because the products in the line belong to different categories with different rules.
What this collection covers
- MK-777 (Acetamoren), listed in Free Muscle's range alongside MK-677 as a growth hormone secretagogue-class research compound. It has no published human trial data, and its own page sets out what is and is not known.
- RAD-150 (TLB-150), described in trade literature as an ester-modified derivative of the SARM RAD-140. Supplied as 25 mg capsules, 60 per pack, for laboratory research. No human trials have been published.
- NitraGlyc, a stimulant-free pre-workout capsule combining Nitrosigine (inositol-stabilised arginine silicate) and glycerol. This is a food supplement, not a research compound, and it carries no authorised health claim.
- PCT (Post Cycle Therapy blend), 60 capsules, sold for laboratory research.
- Bioreactive Bundle, MK-777, RAD-150 and NitraGlyc together, priced as a convenience. We make no claim that the items do anything in combination.
How to compare them
For the research compounds, the figures that matter are milligrams per capsule multiplied by capsules per pack, the price per milligram that gives you, and the batch certificate. For NitraGlyc, read the ingredient panel and the per-serving quantities on the label. The price per milligram article walks through the arithmetic.
Batch testing and certificates of analysis
A certificate of analysis states what an independent laboratory identified in a specific batch and the purity it measured. Every Free Muscle batch, including the Bioreactive line, goes to Janoshik Analytical and carries a printed batch number. Email us the number from your pack and we will send the certificate for that batch. A generic document without a batch number does not tell you what is in your pack. See how we test.
Where to buy Bioreactive Series products in the UK: how to check a supplier
Whichever shop you buy Bioreactive Series products 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.
- The strength per capsule and the capsule count. With both figures you can work out the total milligrams in the pack and the price per milligram. 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 MK-777, RAD-150 and the PCT blend are sold here; NitraGlyc 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.
Brand on this page: Free Muscle. The UK supplier checklist and how we test go into more detail.
Legal status in the UK
MK-777 and RAD-150 are not licensed medicines (MHRA) and not authorised food supplements. They are sold to adults for laboratory research and are not for human consumption. Growth hormone secretagogues and SARMs, along with related derivatives, are prohibited at all times under the WADA list. NitraGlyc is a food supplement and is not a medicine; food supplements should not be used as a substitute for a varied diet. Our SARMs research guide covers the wider legal picture.
Storage and handling
Keep all items sealed in a cool, dry place away from light and out of the reach of children. Handle research compounds according to laboratory good practice.
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
- MK-677 (Ibutamoren): What the Research Says
- Nitrosigine and Stimulant-Free Pre-Workouts
- Why Post-Cycle Therapy (PCT) Matters
- What Is Janoshik Analytical? Third-Party Testing Explained
- Related collections: SARMs, MK-677 (Ibutamoren), Performance Nutrition
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. NitraGlyc is a food supplement, not a research compound. Nothing on this page is medical or dosing advice.
Frequently asked questions
What is the Bioreactive Series?
It is the name Free Muscle gives to its own-label product line: the research compounds MK-777 (Acetamoren) and RAD-150 (TLB-150), the NitraGlyc stimulant-free pre-workout, and a PCT blend. The name describes the range, not a property of the compounds. Each product has its own page with the published research, pack details and batch certificate information.
Is RAD-150 the same as RAD-140?
No. RAD-150, also called TLB-150, is described in trade literature as an ester-modified derivative of RAD-140. RAD-140 has a small amount of early clinical data; RAD-150 has none published. Both are sold for laboratory research only and both fall under the WADA prohibition on SARMs and related compounds. Their collection pages set out what is known about each.
Is NitraGlyc a research compound?
No. NitraGlyc is a food supplement containing Nitrosigine (inositol-stabilised arginine silicate) and glycerol. It contains no stimulants. Neither ingredient carries an authorised UK or EU health claim, so we do not make one. It is included in this collection because it is part of the Bioreactive product line, not because it is in the same legal category as MK-777 or RAD-150.
Is the Bioreactive Bundle better value than buying separately?
Usually, but prices change, so check the per-item arithmetic on the day. The bundle exists as a convenience for people who want the three Bioreactive products in one parcel. We make no claim that the items act together or produce any result in combination, and the research compounds inside it remain research-use only.
How do I get the certificate for my batch?
Find the batch number printed on the pack and email it to us. We will send the Janoshik Analytical certificate for that batch, which records the compound identified and the purity measured. Check that the batch number on the certificate matches your pack. This applies to every Free Muscle-brand product, including everything in the Bioreactive Series.
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.
Can I return an order?
Yes: unopened items can be returned within 30 days. Our guarantee page has the full policy.
Is there a discount when I buy more than one?
Yes, on Free Muscle-brand products: 5% off automatically when your cart holds 2 of them and 10% off with 3 or more, applied in the cart. The offers do not combine. The Bioreactive Bundle is already priced as a set and is not part of the multi-buy offer.