Sting and No Sting / Reta

[lovemycats2025]

I've purchased reta from two different sources. Both reputable and with great reviews. Why does one vendor's product sting and the other does not during administration? I'm down 40lbs since Mid Aug, so they are working, but there is a huge difference in how they feel when injected. Using the same bacteriostatic water on them both, so I know it's not that. Would love any insight anyone has.

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[miss-sanne]

Do you filter it ? For impurities ? Or maybe it could be the pH ? Or you use a high volume ?
But really I have no idea, I never had a sting, and have different vendors.

edit: I just saw that in phase 1 and 2 : some people report it.

 

[lovemycats2025]

Do you filter it ? For impurities ? Or maybe it could be the pH ? Or you use a high volume ?
But really I have no idea, I never had a sting, and have different vendors.

edit: I just saw that in phase 1 and 2 : some people report it.

No, I just reconstitute the vials with the bac water per the directions. I used the same bottle of Bac water on both. One vial stung during injection and the other did not. Both vials are clear once mixed with the bac water and otherwise look the same. Just from two different vendors.

 

[miss-sanne]

pH maybe ?