If the area feels firm and resistant, you may be pinching muscle
What do B12 infusions do
for example, isoniazid, cycloserine, penicillamine, and hydralazine each form complexes with B or otherwise interfere with B metabolism, potentially leading to deficiency and peripheral neuropathy
Pregnant women: 2.6 micrograms (mcg) per day Breastfeeding women: 2.8 mcg per day Nonpregnant women: 2.4 mcg per day Best foods with vitamin B12 during pregnancy Vitamin B12 is only naturally found in animal products, like fish, meat, poultry, eggs, and dairy
Published preclinical data in rodents suggests doses equivalent to 200mg+ in humans produce off-target effects on folate metabolism and S-adenosylmethionine (SAMe) pools
This does not mean injections are unnecessary it means they are not automatically superior for every patient