Product Overview
Buy Nandrolone Esters by Zyvex Pharmaceuticals at Best Anabolic Steroids. Three vials, two esters, one hormone. Deca 300 and Deca 500 hold nandrolone decanoate at 300 and 500 mg per millilitre, and NPP 100 holds nandrolone phenylpropionate at 100 mg per millilitre. All three are nandrolone, a 19-nor androgen: the steroid skeleton is missing the methyl group at position 19, which changes how the compound behaves in tissue long before the ester is considered.
That structural detail is what separates this line from testosterone. Nandrolone is barely converted into DHT, so scalp hair loss and prostate irritation are less of a story, and the anabolic-to-androgenic ratio is among the highest in the class. What comes with it is progestogenic activity and a hard shutdown of natural production, and it aromatizes at roughly a fifth of the rate testosterone does, so water retention is milder than most injectables while the risk of prolactin-driven breast symptoms survives an otherwise clean estrogen panel.
Vial concentration is the practical fork. Nandrolone decanoate at 500 mg per millilitre delivers a weekly total in a single small injection, which reduces oil volume and site irritation; the 300 mg pack gives finer control of the dose. NPP at 100 mg per millilitre is the short-ester option, injected every other day for a fast start and a fast exit.
Decanoate and Phenylpropionate: Two Speeds of One 19-nor
Nandrolone decanoate
The long ester, typically quoted at six to twelve days of elimination half-life after an intramuscular depot. Blood levels rise slowly and plateau over several weeks, which is why the classic growth phase on Deca is measured in months rather than in weeks. The same slowness applies at the end: after the last injection the ester keeps releasing, so a therapy window opened too early does nothing.
Nandrolone phenylpropionate
Vendor material puts the active life of NPP at two to three days, with some references extending it to around four and a half. That puts injections on an every-other-day rhythm, brings the level up within the first week and clears the depot within days of the final shot. It is the version of nandrolone used when a cycle needs to start and stop quickly.
Both esters are strongly suppressive, and neither provides an androgen base of its own. A nandrolone run without testosterone in it is the classic recipe for low energy and sexual dysfunction, which is a property of the hormone rather than of the Zyvex pack.
Dosage Protocol
Reference bands from literature and vendor material; not a clinical prescription for a research compound.
| Level | Weekly dose | Cycle length | Notes |
|---|---|---|---|
| Beginner | 200-300 mg | 8-12 weeks | Start at the bottom of the band; Deca 300 gives 1 ml a week |
| Intermediate | 400-600 mg | 8-12 weeks | Decanoate twice weekly, NPP every other day |
| Advanced | Above 600 mg | 8-12 weeks | No confirmed ceiling in the sources; prolactin and suppression climb |
| Female | No confirmed protocol | - | Documented female dosing does not exist in the sources; class masculinisation applies |
| Administration | Intramuscular | - | Deep gluteal injection, 1-2 shots weekly for decanoate, every other day for NPP |
The 500 mg per millilitre pack is convenient rather than more potent: half a millilitre carries 250 mg of the same ester. Higher concentration also means a thicker oil, which some users find produces more post-injection soreness than the 300 mg version at the same total dose.
Suggested Protocols
Nandrolone is almost always used alongside an androgen base, and the choice of partner ester decides the joint comfort, the level of water and how long the cycle can run.
What to Expect
- Weeks 1 to 2. NPP is already working at this point while decanoate has barely filled its depot. Either way, the first subjective change is usually joint comfort rather than visible size.
- Weeks 4 to 6. Decanoate reaches steady levels. Training loads rise, recovery improves and the joints feel cushioned, which is the effect that keeps nandrolone in a stack long after the scale has stopped moving.
- Weeks 6 to 10. Mass and strength accumulate, with less visible water than a testosterone-only cycle of comparable dose. Weight gain is slower than on a strong oral kickstart and more likely to stay.
- Weeks 10 to 12. The ceiling of a normal cycle. Pushing past it mainly raises prolactin, blood pressure and suppression.
- Coming off. Decanoate continues releasing for a week or more after the final shot and NPP is gone in days, so two identical cycles end on very different timelines.
- Limit. Detection is the worst in the range: nandrolone metabolites have been traced in urine for twelve to eighteen months, and published work found traces months after a single injection. Treat it as untouchable for anyone tested.
Side Effects and Management
Nandrolone has a milder cosmetic profile than testosterone in some ways and a harder hormonal one in others. Prolactin and the depth of shutdown are the two items that separate the two.
Post-Cycle Therapy
Nandrolone shuts down natural production more thoroughly than testosterone does, so recovery planning is not optional and is not short. The ester sets the start date.
Buying Nandrolone Esters by Zyvex Pharmaceuticals
The three vials are listed in the Zyvex Pharmaceuticals range with ester, concentration and volume spelled out, so a weekly total can be converted into millilitres before ordering. Support products from the same shelf, including Cabergoline for prolactin and Nolvadex for the recovery window, sit in the same catalogue. Packaging is plain, domestic and international rates are listed side by side, and any question about the ester split can be answered before the order goes through.
