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Regular Member

Date Joined May 2007
Total Posts : 69
   Posted 9/15/2008 10:51 PM (GMT -6)   
I am just curious if anyone who has had experience with Vitamin b-12 injections has any idea how long it takes to feel their effect. My son started injections today and will have one every day for the first week and then once a week for the next month to see if it has any effect on his fatigue. Any input would be welcome. Thanks

Veteran Member

Date Joined Jul 2008
Total Posts : 674
   Posted 9/15/2008 11:01 PM (GMT -6)   
I just got my first B12 injection about a week ago.  I'm going to be getting them once a month, for the same reason as your son, fatigue. I havent noticed any difference, most people I know that get them start off with an injection every week, and start to taper to every month after a couple months...So I'm not sure why my DR would make mine once a month to start...I'll have to ask him about that next time I see him.  But, I have heard a lot of success stories with B12.

Dianogsed with Crohns at 16, 21 yrs old now.
Surgeries:1 Bowel Resection, Gallbladder Removed. Another Resection Scheduled for September.
Current Meds: Humira (weekly), 60mg Pred, Levbid, Nexium.

Veteran Member

Date Joined Jan 2003
Total Posts : 6044
   Posted 9/16/2008 3:07 AM (GMT -6)   
takes a while... especially if your very low.... takes a bit for your body to use it to help make red cells and for nerve signals...

Elite Member

Date Joined Apr 2005
Total Posts : 14995
   Posted 9/16/2008 9:29 AM (GMT -6)   
Randy is right, until your levels get up you won't feel much. But.....I now get my B12 shots every other week and I definetly can feel a difference the day after I get the shot, I have more energy.

Right now I am waiting for an appt for an Iron Infusion. I am looking forward to that becuz I hear you start feeling better within about a week. Good luck!
Been living with Crohn's Disease for 32 years.  Currently on Asacol, Prilosec 60 mg, Estrace, Prinivil, Diltiazem, Percoset prn for pain and Calcium.  Resections in 2002 and 2005.  Recently diagnosed with Fibromyalgia and doing tests to see if I have Inflammatory Arthritis or AS.

Veteran Member

Date Joined Jan 2007
Total Posts : 3200
   Posted 9/16/2008 9:47 AM (GMT -6)   
Ditto, the above. One point I will add, and that is, this might have to be lifetime thing. Mine still run low even with the shots,
The only time they stay quite good is if I give myself weekly shots. I don't mind though, the shots are pretty easy to handle...

Too many years with CD
Two bowel resections, several obstructions.
Fibromyalgia and recently diagnosed with chronic pancreatitis

Laughter is the brush that sweeps the cobwebs from our hearts

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