This could help with knee mobility and knee pain...I've only just started using it following my brother recommending it.
You can buy it on ebay or at the Chemist Warehouse.
Your gut microbiome affects every part of your body, from your digestion to your immune system, your skin, your brain, your hormones, and your adrenals. When your gut health is compromised, you are at a much higher risk for a whole host of health issues.