if cap has been opened on a ph bottle from previous use how long is it good for?

[hard iron]

the reason I ask is because I have some phs that I have used in the past and I still have enough to run another cycle. I used them like back in march of this year, so my question is how long can I hold on to them before they go bad? I have them sealed up and kept in a cool dark place and they're not old or close to expire, so what do you guys think?

 

[hard iron]

anyone know?

 

[jsl]

They should be fine. Vitamins, Tylenol and all types of pills are opened and can still be just as potent months later.

 

[liftin4fun]

They our fine. Even when they hit the expiration date they tend to still work for me.

 

[hard iron]

Sweet thanks dudes

 

[Skigazzi]

They should be fine. Vitamins, Tylenol and all types of pills are opened and can still be just as potent years later.

^fixed

Cool and dark keeps most chemicals stable for very long periods of time.