posted Fri, 04/10/2026 - 11:29
1172
+ 6 **GD shout-out 50mg Reta Pen**
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Thought I'd give GD's 50mg Reta pens a shot. Placed order 3/16 and landed today 4/10. Not too bad. Tracking made absolutely no sense the entire time. Said it was in places that it definitely wasn't, but it landed and that's what matters! Thanks GD! Not sure the legitimacy of these. Super cheap for a 50mg pen, but I guess time will tell. Def a big ass puck of something in there lol.
Ordered from:
- Bookmark
- 6
- 0

Alright fellas. I did it. Here's what I got.
Shot the entire thing into another vial and weighed it. Came out to 1ml.
I did increments of 10 unit shots to see if the mechanism was consistent and it did shoot out .1ml for every 10 units.
100 total units in the pen = 1ml of volume, 50mg of product(50mg/ml), .1ml for every 10 units, (1 unit =.1ml)-> each unit on the pen is .5mg of product. Showing my work so others can verify if they'd like. Feel like I'm back in chem lab lol.
So
1 unit = .5mg
2 unit = 1mg
3 unit = 1.5mg
4 unit = 2mg
etc etc
Hella concentrated
Gonna pin mine after my work meeting lol
Oh and apparently peptides in powdered form (lyophilized) are stable at room temp for several months so they should be good thru the shipping process. Just gotta fridge it after you reconstitute it and it lasts a long time.
Thanks for sharing this. For an Eroid source, its hard to beat that price for a 50mg R*ta pen.
For sure bro. I'll keep y'all up to date here on this thread on the quality.
Good shit bro! Very much appreciated for this! +1
As for stability I read the same thing. Reta is stable for up to 2 months at room temp which is awesome. I think if ordering internationally it should be ordered in the cooler months of the year and then refrigerated for maximum potency.
Nice. I've never seen R*ta pens until it was offered by this source. Curious to see how those works.
I am as well haha
That's a long time in travel man did it come in a cooler bag as I'm sure your meant to keep reta in the fridge well that's what my wife does with hers she has a 30mg pen on her pen if you twist the top it has numbers normally 10 clicks on hers is 1mg of reta. What dose are you planning on starting at? Best to start low and titrate up after a few weeks. Most guys I speak to say 4mg is their sweet spot
Bro....I thought the same thing...nearly 30 days in transit. No cooler pack. Thankfully the weather has been mild, but still. That's the questionable part for sure.
Fingers crossed man. Its meant to be kept between 2-8 degrees Celsius or 36-46 faranheight depending on your metric. I hope you get everything worked out man
Yeah bro... we'll see how it goes.
Nice TD big dog I believe it's gtg
Did you get one?
Not yet don't know how to use the pin you know how to measure it and how long it stays good for I did order a GH pin tho
It's got a little window with dosage markers. You just turn the dial to the desired dose and pin it.
Well hell I guess I'm going to order me one it will be the first time using reta
Mine too bro.
YO I was gonna post mine. Literally just landed for me too!
I got Reta and Tirz and now I don't know which ones which lmao.
Any idea how to use this thing?
Twist the shaft all the way in and it reconstitutes it and loads it in. Pretty slick.
I love it when they twist the shaft
Good to know lol I wasn't sure either.
Hope it works good brother nice grab
Yeah me too lol
How long does the pen last? 30 days
Well, it's 50mg so it would depend how much you use.
Bro that shit is cheap wtf lol
No cheaper than a 10 pack of 10mg Reta for 120 which is about standard for Chinese sources.
very true lol
Nice!
Do they tell you how much bac is in the pen so you can calculate dosage?
Looks like 2ml. It's got click dosage tho.
The top of the pin you just turn to the dosage you want and push down. Its all pre-mesured
How do you know how many mg are in a unit if you don't know how much bac is in the mixture bro?
The pin cartridge only holds so much it is premixed, so like whatever the amount is on the pin say 30mg pen. So if you want 2mg you turn the dial to 2mg and put a needle on the pen and stick and push down the plunger and it administers 2mg. It's not a reusable pen after the mixture is gone, you throw the pen away.
There are some reusable pens but again they come with the cartridge pre mixed and its made for that pen, its already measured so you dont do any measurements you just turn the dial to how much you want to take and push the top down and it administers that much.
Yessir this is correct. Thank you Aggie for explaining
So on these pens you think each unit will be 1mg? Which is 50mg to 0.5ml bac?
Iv had mounjaro and genotropin pens before but they tell you how many units is each mg so you know what dose you get
It's 2ml back water. It's not measured like a standard slin pin brother.
When it comes to Reta, like the Reta pen I have is a 30mg pen. So 1mg is 1mg of Reta administered, that is how the pen works, no measurement needed on the users part, the cartridge is premixed 30mg of reta with bac water for that pen. 1mg is 1mg of Reta.
Im not sure I'm explaining what I mean properly lol the numbers on the pen are units not mg so 1 on the pen would be 0.01ml which is barely enough liquid to drip out the end of the needle
No the numbers on my Reta pen are mg not units. It even has mg after the numbers you dial to dictate how much you want administered.
Oh fair enough. On the pen I received from GD it doesn't say mg and 1 on the dial is such a small volume of liquid like I said it barely comes out of the needle I'm sure it's 1 unit which is 0.01ml
Reta should not be measured in Units but I have never used GD pens. If it is units then it will need to be converted to mg
This is what I mean bro. Iv messaged GD for clarification
I don't like it when sources don't label anything either specially when they sell different compounds in pens that look the same because we don't know if we are receiving reta or tirz
ok yeah these pens must be completely different than the ones I get from another source
Agreed. I was thinking the same as you.
Pretty sure the numbers on these pre filled auto pens dictate mg and not unit like a slin.
Twist it to 1 and push the plunger and watch how little drips out the pen.. surely that's not 1mg? If so that's the most concentrated I have ever seen a peptide
With the pens I get hold of (30mg) the guy explained to me that if you want 1mg you twist to 10 on the dial 15 for 1.5mg etc etc but this could be different
I'm really not sure man. Never had one before and zero info on it whatsoever. I may just throw the puck in a 10ml vial and reconstitute myself so I know for sure.
Ive read this whole thread and this is what i concluded if it helps
Only thing with that is if the numbers/ clicks are units like most pens iv had then that would mean there would need to be 5ml of bac per 50mg of reta for 10 units to be 1mg. By sight it looks like there's around 1-2ml bac water in the cartridge FML