There are currently 3 guijea pig suitable probiotics on the market by Vetark.
Pro-c (yellow), Pro-c Proffesional (white) and Avipro Plus.

I recently ordered the pro-c (yellow) from The Hay experts as I was running low, but I was sent the Pro-c Proffesional (white).
The pro-c Proffesional is only available from Vetark directly or from a Vets as it is double strength and classed as veterinary grade. It is also double the price.
The hay experts only stocks the yellow tub, so they have obviously had their orders mixed up and haven't realised.
I don't think you can actually overdose on probiotics , but the Pro-C Proffesional is recommended to be given at half the dose due to the strength.
I have let the Hay Experts know but still waiting on a reply.
Pro-c (yellow), Pro-c Proffesional (white) and Avipro Plus.

I recently ordered the pro-c (yellow) from The Hay experts as I was running low, but I was sent the Pro-c Proffesional (white).
The pro-c Proffesional is only available from Vetark directly or from a Vets as it is double strength and classed as veterinary grade. It is also double the price.
The hay experts only stocks the yellow tub, so they have obviously had their orders mixed up and haven't realised.
I don't think you can actually overdose on probiotics , but the Pro-C Proffesional is recommended to be given at half the dose due to the strength.
I have let the Hay Experts know but still waiting on a reply.