st johns wort has some real power to effect other medications as I'm been told . So run it by your care giver , its not harmless. I thought about trying it but ruled it out because of other medications . If I did try it i would tell my doctor first . You can buy it over the counter almost anywhere or online.
You might want to try b12 supplement under the tongue available over the counter in most pharmacies.
You need to get a blood test for b12 and low iron , you can get in trouble with too much iron . Too much Iron can kill young children . I was being watched for both on quarterly blood tests I could not give blood for awhile as my tests were coming back as anemic . Most blood banks will not take your blood if its low in iron .
Hope you are feeling better . Time and Exercise are the best .