Arimidex 1 from XtLabs packs 1 mg of anastrozole into each tablet. It works just like the pharmaceutical version—same active ingredient, non-steroidal aromatase inhibitor—but this one comes from an underground lab.

What’s Inside
You get 1 mg of anastrozole per tablet (C17H19N5, for the chemistry fans). It’s an off-white powder, not super soluble, usually pressed into a film-coated pill. The half-life sits around 46 to 48 hours, so your blood levels even out after about a week of daily dosing. Around 40% of it binds to proteins in your blood.

What’s It For?
Doctors prescribe anastrozole for postmenopausal women with hormone receptor-positive breast cancer. It blocks aromatase, which lowers estrogen. In the bodybuilding world, people use it off-label to control estrogen spikes from anabolic steroids. That helps prevent things like gynecomastia, water retention, and extra fat—plus, it keeps testosterone levels up.

How to Dose It
Medically, it’s usually 1 mg once a day. For bodybuilders, the dose lands anywhere from 0.25 to 1 mg, either every other day or daily, depending on the steroid cycle. Most people tweak the dose based on bloodwork, aiming to keep estrogen in check without tanking it. You run it for as long as your steroid cycle lasts, then keep an eye on your bloods after.

Arimidex 1 from XtLabs packs 1 mg of anastrozole into each tablet. It works just like the pharmaceutical version—same active ingredient, non-steroidal aromatase inhibitor—but this one comes from an underground lab.

Why Use It?
Arimidex drops estrogen fast and hard, which means leaner gains and fewer steroid side effects. It reaches steady levels quickly. It’s easy on your liver and doesn’t mess with blood pressure. Works well in stacks—Supertest is a popular combo.

Drop estrogen too low, and you’re asking for joint pain, low sex drive, and mood swings. Underground labs aren’t always the most reliable—purity and dosing can be all over the place. Not safe for premenopausal women. Long-term, there’s a risk to your bone density.

Side Effects
Some people get hot flashes, joint or muscle aches, feel tired, get nauseous, deal with headaches, depression, or skin rashes. More serious stuff: osteoporosis, higher cholesterol, high blood pressure, insomnia, and bone fractures. Side effects get worse with higher doses, so bloodwork isn’t optional—it’s a must.
Arimidex drops estrogen fast and hard, which means leaner gains and fewer steroid side effects. It reaches steady levels quickly. It’s easy on your liver and doesn’t mess with blood pressure. Works well in stacks—Supertest is a popular combo.