While calcium and vitamin D3 supplements are generally safe and support bone health, they may not fully resolve your joint and muscle pain without knowing the underlying cause. I recommend consulting a doctor to get your vitamin D, vitamin B12, and calcium levels checked before starting any daily regimen. Based on your results, a tailored supplement containing cholecalciferol (Vitamin D3) and calcium citrate can be prescribed. For joint-specific discomfort, glucosamine or omega-3 fatty acids may also be helpful. Please seek a professional evaluation to ensure you receive the right diagnosis and targeted treatment.