No human clinical trials
Here are some instances when vitamin injections may be especially beneficial: Nutrient Deficiencies : With diagnosed deficiencies in vitamins such as B12, D, or others, vitamin shots can provide a direct and efficient means of increasing levels of these nutrients in the body
Dihexa Frequently Asked Questions Dihexas therapeutic value lies in its ability to promote the development of fresh, functional synaptic connections between existing neurons, the replacement of lost or damaged neurons with available neural stem cell populations, better cerebral blood flow, and the protection of the brain and prevention of disorders that could threaten it

Tufts CSDD's updated 2024 estimate of the direct cost of a Phase 2 or 3 clinical trial puts it at approximately $40,000 per day, with a single day of delay now worth roughly $500,000 to $800,000 in lost prescription drug or biologic sales, a dramatic increase from the outdated $4 to $5 million per-day-of-delay industry estimate that had circulated since 1993 ( [97] ) ( [98] ), which Tufts characterized as "a gross misestimation for more than 25 years." Every added day spent building a more representative recruitment pipeline therefore carries a real, quantifiable opportunity cost that sponsors must weigh against the scientific and regulatory value of representative data, a tension the still-unfinished Diversity Action Plan guidance leaves unresolved for 2026 planning purposes
Pharmacological Effects of Berberine on Mood Disorders