can too many b12 injections be harmful

https://livvnatural.com/wp-content/uploads/2025/08/5-amino-1MQ-1024x945.png hair growth serum Size:1000 mcg/ml - 30 ml x 5 She does not advise getting any vitamin or mineral injection without consulting a doctor first Safe B12 Injection Guide at Home | Step-by-Step Tutorial - YouTube

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