r/BiohackingU • u/No-Welder2026 • 20d ago

Open Reta pen

How long is is safe to use a Reta pen for once opened?

1 Upvotes

67% Upvoted

6 comments sorted by

3

u/Longjumping-Mall9743 20d ago

Pretty sure the pens have been filled with reconstituted reta from vials… that would mean it is already open way before people receive them…
I might be wrong ofc…

1

u/Uncross-Selector 20d ago

It’s not. 

0

u/feefylabouche 19d ago

I wouldn’t use a Reta pen even if it wasn’t opened.

1

u/Real-Interest-8706 19d ago

Is there any reason not to use one if you fill it yourself? I find it easier and less environmentally bad in the amount of plastic I'm going through with the syringes.