do b12 injections cause headaches I've had a migraine since Sept 4th. I took a injection that day (prescribed by my doctor) so I'm wondering if it's related or coincidence. I'm scared to take another one Why do I feel worse
Pay in 4 interest-free payments of $5.28 Learn more
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 8 - Aug 13















:max_bytes(150000):strip_icc()/VWH-GettyImages-2126120259-c2442d334436484baa255439265b7fb1.jpg)











