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Proper Labs
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Primobolan 100

10 ml100 mg/ml
Methenolone Enanthate (Primobolan), a long-acting injectable mild compound for lean gains and cutting.
£60.50 Save 14%
£51.90
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Usage Injectable

Performance Profile

/ 5
  • Strength3
  • Keep gains4
  • Popularity4
  • Weight gain3
  • anti estrogen1
  • Fat / water loss3

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Frequently Asked Questions

What is Primobolan 100 by Proper Labs?
It is an injectable version of methenolone enanthate, dosed at 100mg per ml. Primobolan is a DHT-derived anabolic steroid known for slow, quality lean muscle gains rather than rapid size, with very little water retention or oestrogenic activity. Most users pick it for cutting or recomposition phases where preserving muscle while dropping fat is the priority.
How is Primobolan usually dosed and run?
As a guide and not medical advice, users commonly split it into two injections per week, often totalling around 400mg weekly for a first cycle, run over roughly 10 to 12 weeks. Some run it slightly higher, but Primobolan is one of the milder compounds so there is rarely a need to push the dose hard. Always base decisions on your own bloodwork and a doctor's input, not on forum numbers.
Do I need to run testosterone alongside Primobolan 100?
Yes. Primobolan suppresses natural testosterone output on its own, so it is not typically run alone. A testosterone base, commonly in the 200 to 300mg per week range, is used alongside it to keep hormone levels stable during the cycle. This is standard practice, reported widely, and not something to skip.
What side effects come with methenolone enanthate?
Reported issues tend to be mild compared with harsher compounds: some testosterone suppression, a possible dip in HDL cholesterol, occasional hair thinning in those already prone to it, and irritation at the injection site. A proper PCT such as nolvadex or clomid after the cycle, alongside baseline and follow-up bloodwork, is the sensible way to manage this.
How does Primobolan compare to Masteron for a cutting cycle?
Both are mild, DHT-based options popular in cutting cycles with a favourable anabolic-to-androgenic ratio. Masteron leans more toward a hardening, dry look and some anti-oestrogenic effect, while Primobolan is generally rated higher for straightforward lean tissue retention with fewer androgenic side effects. Some users combine the two rather than choosing one over the other.
Is this genuine Proper Labs stock and how fast does it ship?
Every box of Proper Labs Primobolan 100 sold here is authentic, with a verification code on the packaging so you can confirm it against the manufacturer before use. Orders go out from our UK warehouse via Royal Mail Tracked 24 in plain, unmarked packaging, and if you pay before midday on a working day it is usually dispatched that same day. Most customers across the UK see it land within one to two working days.