Micro Ingredients is a supplement brand that sells a wide range of powders, softgels and capsules, and it was the top-selling supplement brand on TikTok Shop in the first half of 2026, according to independent research. The brand claims its products are "one hundred percent pure, with no additives."
But does Micro Ingredients use research-backed doses? Do its supplements contain any unhealthy ingredients? Why does its oil of oregano carry a lead warning? And is Micro Ingredients better or worse than other TikTok-viral supplement brands like Goli?
In this article we'll answer all of these questions and more, as we analyze the ingredients in the brand's best-selling collagen supplement, and oil of oregano supplement, to give our take on whether or not they're effectively formulated.
We'll also discuss the risk of side effects, share our concerns about the brand's third-party testing, and compare Micro Ingredients to other popular supplement brands to pick our winners (and losers).
Key takeaways:
- Research-backed collagen dose
- Oregano oil carries a lead warning
- We do not currently recommend Micro Ingredients
Micro Ingredients Oil of Oregano Review
The active ingredients in Micro Ingredients Oil of Oregano softgels are shown below:
image source: https://www.microingredients.com/
Oil of oregano is included at 300 milligrams (mg), standardized to 165 mg of carvacrol, a naturally occurring compound in oregano.
Micro Ingredients markets its oregano softgels for "dual action immune support," but we cannot identify any clinical trials testing whether oral oregano oil supports immune function in healthy adults.
Most research on oregano is preclinical, and the few human trials we identified are mostly small studies of isolated carvacrol in people with lung disease, like a 2018 clinical trial in patients with asthma.
We also cannot identify any human research on Origanum minutiflorum, the specific oregano species used in this supplement.
The 165 mg carvacrol dose is also higher than the highest dose tested in a clinical trial on carvacrol safety published in the Drug and Chemical Toxicology journal, for adults weighing less than about 180 pounds, and that trial only lasted one month.
Black seed oil has a strong base of clinical research, as we documented in our black seed oil review article, but we can't identify any human trials suggesting it supports immune health.
The inactive ingredients in this supplement, shown below, should be safe and non-toxic:
image source: https://www.microingredients.com/
Overall, we do not currently recommend Micro Ingredients Oil of Oregano given the limited human research on oral oregano and black seed oil for immune support.
Micro Ingredients Collagen Review
The ingredients in Micro Ingredients Multi Collagen Peptides Powder are shown below:
image source: https://www.microingredients.com/
Collagen peptides have been studied in dozens of clinical trials, and a 2023 meta-analysis of 26 trials found that collagen supplementation significantly improved skin hydration and elasticity.
The 10,888 mg collagen dose is roughly in line with the 1 to 10 gram (g) daily doses that improved skin hydration and elasticity in a meta-analysis published in the Indian Journal of Dermatology, Venereology and Leprology.
Collagen is also clinically shown to reduce knee osteoarthritis pain and improve joint function, according to a 2025 analysis of 11 clinical trials.
The same 2023 meta-analysis found no significant difference between collagen sources for improving skin elasticity, so we don't consider this multi-source blend to be an advantage.
Hyaluronic acid is included at 55 mg, which is below both doses tested in a 2025 clinical trial that found 120 mg daily improved skin hydration and elasticity.
Biotin is included at a 2,500 microgram (mcg) dose, or 8,333% of the Daily Value (DV), and we haven't come across clinical evidence that biotin benefits hair, skin or nails in people without a biotin deficiency, as we documented in our Zena Collagen and Biotin review article.
This powder contains no inactive ingredients.
Overall, we consider Micro Ingredients Multi Collagen Peptides Powder likely to be effective for improving skin hydration and elasticity given the research-backed collagen dose.
Does Micro Ingredients Cause Side Effects?
Neither of the Micro Ingredients products we analyzed appears to have been studied in clinical trials, which makes it challenging to determine whether or not they're likely to cause side effects.
However, we can make an educated guess based on the ingredients and their doses.
The biggest concern with the collagen powder is its high biotin dose.
The FDA warns that biotin in dietary supplements can significantly interfere with certain lab tests, and has received adverse event reports of biotin causing falsely low results on troponin tests, which help diagnose heart attacks.
Collagen supplementation itself was generally well tolerated, with a low incidence of adverse events, in a medical review published in the European Journal of Clinical Nutrition.
For the oregano softgels, the most notable concern is the high carvacrol dose we discussed in the Oil of Oregano Ingredient Analysis section.
Oregano may also interact with blood thinners, based on a 2025 case report describing a patient taking an anticoagulant whose INR, a measure of blood clotting time, rose to more than twice the target range after drinking oregano tea (and occasionally verbena tea) daily for a week.
Black seed extract caused dyspepsia in 15.7% of participants taking 600 mg daily in a 2017 clinical trial, along with nausea and constipation in a smaller share.
Overall, we consider these supplements unlikely to cause serious side effects in healthy adults, but the biotin in the collagen powder can interfere with important lab tests.
Third-Party Testing
Micro Ingredients states in its FAQ that its products are "third-party lab tested for heavy metals and micro-organisms."
However, we cannot identify any published test results or certificates of analysis on the brand's website.
This matters because the Oil of Oregano with Black Seed Oil label carries a California Proposition 65 (Prop 65) warning for lead:
image source: https://www.microingredients.com/
The warning reads: "Risk of cancer and reproductive harm from exposure to lead."
Prop 65 warnings don't disclose how much lead a product contains, and the label notes that the warning "does not mean the product is unsafe."
Without published test results, consumers can't verify the actual lead level.
The company behind Micro Ingredients has also been named in multiple Prop 65 notices alleging lead in other products.
In 2025, the Environmental Research Center served a 60-day notice on DPL Trading, Inc., which does business as Micro Ingredients, alleging lead in the brand's wheat grass, ginkgo biloba and ginger powders, and later filed a lawsuit over those products.
A separate 2026 notice alleged lead in Micro Ingredients' maca root and moringa powders.
An earlier Prop 65 case over lead and cadmium in DPL Trading's powdered supplements, which also named Amazon, ended in a 2023 settlement with total payments of $30,000.
We urge Micro Ingredients to publish batch-level heavy metal test results for every product, and we do not currently recommend this brand until that has been completed, given the allegations and warnings referenced above.
Micro Ingredients vs. Popular Supps
Here's how Micro Ingredients compares to other TikTok-viral supplement brands in terms of formulation quality, in our opinion:
Goli
Goli is one of the top supplement brands on TikTok Shop, and it's best known for its apple cider vinegar (ACV) gummies.
Each serving of Goli ACV Gummies contains 4 grams (g) of organic cane sugar, and high sugar consumption is clinically shown to be generally more harmful than beneficial for health.
The gummies also contain citric acid, while Micro Ingredients' collagen powder contains a research-backed collagen dose and no inactive ingredients.
Micro Ingredients is the winner from both a potential efficacy and a health perspective.
Winner: Micro Ingredients
Cymbiotika
Cymbiotika is a popular wellness brand known for its liposomal supplements.
Its liposomal vitamin C contains beta carotene and its liposomal magnesium provides a relatively low magnesium dose, as we documented in our Cymbiotika review article.
Cymbiotika settled a Prop 65 lead case in 2022, but Micro Ingredients has faced more recent lead allegations, and its oregano softgels carry a lead warning on the label.
Cymbiotika is the winner from a health perspective.
Winner: Cymbiotika
MaryRuth's
MaryRuth's is another popular TikTok Shop supplement brand, known for its liquid vitamins.
Its Liquid Morning Multivitamin contains natural raspberry flavor, which we consider a minor concern compared to the lead warning on Micro Ingredients' oregano softgels.
MaryRuth's is the winner from a health perspective.
Winner: MaryRuth's
Micro Ingredients Pros and Cons
Pros:
- Research-backed collagen dose
- Additive-free collagen powder
- Clean softgel inactive ingredients
- Collagen may support skin and joints
Cons:
- Oregano softgels carry a lead warning
- Multiple Prop 65 lead allegations
- Doesn't appear to publish lab test results
- Proprietary collagen blend
- Underdosed hyaluronic acid
-
Relatively high biotin dose
- High carvacrol dose
-
Limited human research on oral oregano oil
- Products don't appear clinically tested
- Less healthy than some competitors
