I ordered this 400mg one from Symphony Labs:
Estradiol Enanthate (10 mL × 40 mg/mL)
I was planning to use this for a long time by injecting 4mg weekly with 30G insulin syringes but someone here told me it is recommended to trash it after 6 months.
Anyone used until the vial is empty like 2 years?


I have one, used it for 7 months so far, color still the same. It depends, if it feels like the Estradiol enanthate has gone bad (color change) or there is something inside that has probably compromised it, I would throw the vial away.
Rubbing alcohol pad on it before and after use. I always keep the vial away from the light, and keep it in a upright position (not when using). I try to pierce the cap not in the same place. And I try to keep it under 25°C (Which may have not been entirely possible).
I may have missed something but it is something that has been recommended to me