top banner.JPG__PID:cd3221bb-4cbf-4e6a-8e54-93063d9b680d

What to Stack with BioPrimo® (Primobolan) for Insane Gains!

by Ryan McTeigue on July 13, 2023


If you’ve been around the fitness industry for quite some time, you may already be familiar with BioPrimo® (Primobolan) as one of the favorite anabolic of people who are committed to achieving their best physique. We’ve talked about the benefits of Primo over Testosterone in a previous article, and we’ve already established its effectivity in muscle building, fat loss, and performance enhancement among other things. The next question is- What are the best compounds to stack it with to create the optimal, synergistic effect?

BioPrimo® being a DHT derivative, works like a powerful anabolic by boosting protein synthesis while dramatically improving nitrogen retention to ensure catabolic states are prevented. This helps to successfully build lean muscle tissue, that will last for longer periods even during your off-cycle, considering its enanthate ester allows it to remain active in the body for weeks even after you stopped administering it (off-cycles).

BioPrimo® is impressive on its own, but if you are looking for more bulk at a faster rate, Dianabol is one of the best compounds to stack it with. Also known as Methandrostenolone/Methandienone, it is a derivative of testosterone that was modified to reduce its androgenic side effects while retaining its powerful anabolic properties.
Originally developed by Dr. Ziegler for the US Weightlifters and athletes, Dianobol or D-bol brought a new dynamic as a compound, which caused promising improvements in competitive sports with initial prescription doses at 5-15mg/day.

Dianabol was so effective and proven to be an essential supplement among professional bodybuilders during the late 60’s up to the early 80’s that it was reportedly used by 7-time Mr. Olympia winner Arnold Schwarzenegger at the peak of his bodybuilding career. According to various sources, his ‘supposed’ roid cycle was a combo of 15-20mg/day of Dianabol plus 100 mg of Primobolan per week. 

Dianabol has a great effect on protein synthesis and buildup leading to massive gains in muscle mass, strength and stamina. A suitable dose is 15-50 mg/day for men and 5-10 mg/day for women with a half-life of 6-8hours.


BioPrimo® (Primobolan)  has got a strong binding affinity for androgen receptors which has been directly linked to lipolysis (fat breakdown). While most anabolic steroids can increase your metabolic rate, Primobolan not only accelerates your metabolism, it is believed to directly support fat loss, making it perfect for cutting.
For gym enthusiasts who are targeting the biggest amount of fat loss, we recommend stacking your Primo with Stanazine® (S4) (otherwise known as Andarine). It is a selective androgen receptor modulator that helps prevent muscle wastage and support muscle mass development even during cutting, to achieve that hard, chiseled look.

Adding S4 into the equation will maximize Primo’s anti-catabolic properties while adding a layer of anabolic punch with little to no side effects (because it binds selectively to only bone and muscle androgen receptors). This will ensure a faster way to build muscles even when you’re at a caloric deficit during training.

Another veteran bodybuilder likes to run his BioPrimo® (Primobolan)  with Ligandrol LGD-4033 as a base for the best bulk without Testosterone shutdown. This is a great way to maximize muscle hypertrophy while avoiding the use of Testosterone because of its adverse effects.
Running the big daddy of all SARMs with your Primo will guarantee you the increased muscle volume you want. An added bonus is that it won’t crash your own test levels that may cause you to lose all your hard-earned gains, plummet your motivation, and shrink your testicles (which happens with Testosterone cycling).

When tested on male subjects for 21 days, Ligandrol LGD-4033 was proven to be safe and well tolerated, with a noticeable upsurge in lean body mass. Due to its highly selective androgenic activity, the serum PSA did not change, proof that LGD has no adverse effects on the prostate.

Now, every person has a different physiology. And if you’re someone who is prone to fluid retention due to your own testosterone that will be free-circulating when running a Primo-SARMs combo, you can remedy this by taking a PCT during your off cycle. One guy swears by Re-Charge® (Arimistane), which he takes at 25 mg/ day to maintain his lean gains after a roid cycle and ensure a ripped physique with zero aromatization to estrogen.