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Research Capsules

Our research capsules are small molecules sold as pre-measured capsules: MK-677 12.5mg (60 count), RAD-140 10mg in 60-count or 100-count bottles and Enclomiphene 12.5mg (60 count).

Looking for something else? Try our growth hormone peptides and hormone peptides, or go back to the Onyx Research home page to see every category.

What are research capsules?

None of these are peptides. They’re small molecules that work when swallowed, which is why they come in capsules and need no mixing.

MK-677 (ibutamoren) copies ghrelin and raises growth hormone, RAD-140 is a selective androgen receptor modulator (SARM), and enclomiphene blocks estrogen feedback at the pituitary. Vanguard Laboratory checked the RAD-140 capsules at 10mg per unit.

The research behind this range is indexed on PubMed, the free database of the U.S. National Library of Medicine. Start with this PubMed search.

Research Capsules in stock

How to choose research capsules

Pick MK-677 for growth hormone work without injections, RAD-140 for androgen receptor studies and enclomiphene for hormone-axis models.

The 100-count RAD-140 bottle costs less per capsule than the 60-count, so it suits longer studies.

Research capsules prices

This range has 3 products, with prices from $115.00 to $200.00. 1 of them come in more than one size or version, chosen from the menu on the product page. Shipping is free on every order, to any country we ship to.

Research capsules lab testing

1 of the 3 products here have a certificate of analysis in their product photos. Most come from Freedom Diagnostics, a US lab that measures purity by HPLC and confirms identity by mass spectrometry. Each product page lists the purity results and the search code you can use to look the report up yourself.

Storage and handling

Store capsules and tablets in their closed bottles, cool, dry and out of direct light.

Write the arrival date and, later, the mixing date on every vial or bottle. Those two dates answer most questions later.

Frequently asked questions

Are these research capsules in stock?

Yes. Everything listed on this page is in stock.

Are research capsules for human use?

No. Onyx Research sells research compounds for laboratory use only. None are approved for use in people or animals.

Where can I see the lab results?

In the product photos and in the purity list on each product page.

How much is shipping?

Nothing. Shipping is free on every order, worldwide.

Buy research capsules at Onyx Research

Choose a product from the list, pick a size where there’s a choice and add it to your cart. Everything here is in stock and ships free, wherever you are. You can always go back to the Onyx Research home page to browse the full store.

For laboratory research use only. Not for human or veterinary use.