Fredberg et al., Ultrasonography as a tool for diagnosis, guidance of local steroid injection and, together with pressure algometry, monitoring of the treatment of athletes with chronic jumper's knee and Achilles tendinitis: a randomized, double-blind, placebo-controlled study, Scandinavian journal of rheumatology 33, no
There are specific scenarios where combining these two forms of B12 might be considered, as part of a tailored treatment plan: Reducing Injection Frequency: For some individuals who require lifelong B12 due to malabsorption but dislike frequent injections, a doctor might explore if high-dose oral supplements can help maintain adequate levels between less frequent injections
For added support, I recommend The Myers Way Multivitamin
Your egg cells take approximately 90 days to mature before ovulation, so any supplement you take to influence egg quality needs at least three full menstrual cycles to show measurable effects