The oral formulation almost certainly delivers less bioavailable peptide than equivalent injectable doses, but the delivered amount may still cross therapeutic thresholds for some individuals and conditions
Oral Supplements: A Quick Comparison For people with a confirmed deficiency, especially those with absorption problems, injections generally act faster than oral supplements: Injections: bypass the gut, reliably reach the bloodstream, and often produce noticeable changes in energy and mental clarity within days for those who are deficient
The following data were collected: publication year, country and continent, study setting (e.g., hospital, private practice, academic clinic), sample size, age range, mean age, study design, population characteristics, intervention details, outcomes, and effect measures (e.g., serum B12 levels)
[21] Pseudovitamins and antivitamins [edit] Pseudovitamin B 12 refers to compounds that are corrinoids with a structure similar to the vitamin, but without vitamin activity
Many people do but if you have a digestive condition, low stomach acid or any gut absorption issue, very little of an oral supplement will actually be absorbed regardless of the dose