While most of the vitamins are easily available in nature, there are certain people who are unable to meet their everyday requirements. To fulfil their requirements, the market is filled with supplements. From colourful chewables to gummy supplements and even chocolate-infused vitamins. However, one supplement stands out—Vitamin patches. Touted as a revolutionary way to bypass traditional ingestion, these transdermal patches promise to deliver essential nutrients directly into the bloodstream. These innovative patches, which are now also available online, claim to provide a solution for individuals with food allergies or digestion-related absorption issues. How Efficient Are These Patches?Despite the hype, there is little empirical evidence to support the efficacy of vitamin patches. Experts say that transdermal patches are proven effective for delivering certain medications, such as nicotine and birth control, but applying the same principle to vitamins may not be as straightforward. "Skin is only partially permeable, and most substances only penetrate the outermost layer, the stratum corneum," explained Dr. Geeta Yadav, a dermatologist in Canada. For substances to absorb into the bloodstream, they need to be small, fat-soluble molecules. While some drugs like nicotine and fentanyl meet these criteria, most vitamins do not. “Vitamins could potentially be administered transdermally if they were formulated as nanoparticles and encased in fat-soluble carriers,” Dr. Yadav said. However, without clear evidence of such formulations being used, the effectiveness of vitamin patches remains questionable. Clinical Doubts and DeficienciesResearch into transdermal vitamin patches, especially for bariatric patients who struggle with oral supplementation, has yielded mixed results. A study tracking patients over a year found deficiencies in vitamin D, B6, B1, folate, and zinc despite regular patch use. Another study mirrored these findings, highlighting vitamin D deficiencies even after prolonged patch use. There was only one study that showed hope. It was conducted on adults who successfully absorbed Vitamin D3 via these patches. Regulatory ConcernsJeff Ventura, vice president of communications for the Council for Responsible Nutrition, emphasized that vitamin patches fall outside the legal definition of dietary supplements, which must be ingested orally. "Vitamin patches are not dietary supplements but illegal drugs," he said adding that the US FDA has issued warnings about non-diatary supplements being sold as supplements.How Do Vitamin Patches Work?Vitamin patches work by delivering nutrients directly through the skin and into the bloodstream, bypassing the digestive system. These patches are designed to release their vitamin content over time, with the help of an adhesive layer that sticks to the skin. For this to be effective, the vitamins must be in a form that can penetrate the skin's outer barrier, the stratum corneum, which is only permeable to small, fat-soluble molecules. The concept and functioning of these patches depend on the use of nanoparticles or lipophilic carriers that enhance absorption. However, the science behind whether vitamins can reliably be absorbed in this way is still under scrutiny. Risk Of AdhesivesWhile overdosing on vitamins through patches seems unlikely, the adhesives used in these products pose a significant risk. Functional medicine expert Sam Tejada recounted his personal experience: after testing a vitamin patch, he developed severe contact dermatitis requiring medical attention. Health experts have warned of multiple risks behind these patches, saying these suppkemets might be more of a fad than a functional product, and consumers should exercise caution.”Also Read: Endomorph, Mesomorph, Ectomorph: What Is It, Diet And Fitness