Cross-referencing clinical data
A pairing appears on this page only when a trial gave both ingredients together and measured the result. Myrtle has none that clears that bar.
Stitching two separate single-ingredient studies into a pairing is the one thing this engine will not do. When a study of the combination itself holds up at source, it lands here with its citation.
No invented synergy. Where actives were studied on their own rather than together, the record shows each on its own evidence, never a combined effect no trial measured.
Research strength. Research strength says how much work stands behind the combination. It is never a product score.
Independent record. Every finding is cited to a named trial, dated, and never written by the brand.
20 pairings are live across the library today. Checked 20 July 2026.
No study gave these as a pair, so they are not in the card above. But the reason they belong together is settled biochemistry, not a guess, so it is worth knowing.
Two 2025 and 2026 trials paired lemon myrtle extract with low-load bodyweight or low-load resistance training in older adults and reported hypertrophy measures. Protein intake is the established limiting input for that same adaptation. Combining them addresses different parts of the training response, though no study has tested the pair directly.
Lemon myrtle extract has been examined alongside low-load resistance training in older adults, which is the population where HMB is most often used. The two are separate approaches to the same target and have not been compared or combined in any trial. Read this as a plausible formulation pairing rather than an evidenced one.
Low vitamin D status is associated with reduced muscle strength and function in older adults, and correcting a deficiency is a standard part of any muscle-focused programme in that group. Any botanical aimed at training adaptation in older adults sits on top of that baseline. This is context rather than a direct interaction with the plant.
Myrtle leaf and berry material is rich in ellagitannins, flavonols and anthocyanins, and ascorbate regenerates polyphenol radicals back toward their parent form in vitro. This extends chemical activity within a mixture. Whether it changes anything after absorption has not been shown for this plant.
Myrtle is high in tannins, and tannins form insoluble complexes with non-heme iron that lower absorption from the same meal. This is a general property of tannin-rich botanicals and teas. Separating an iron supplement from a tannin-heavy preparation by a couple of hours avoids it.
Myrtle carries ellagitannins, which humans do not absorb intact. Gut bacteria hydrolyse them to ellagic acid and then to urolithins, and only part of the population carries the bacteria that produce urolithin A efficiently. That is why supplemental urolithin A exists as a way around a conversion step that many people do not perform well.
Urolithin production from ellagitannins is carried out by specific gut bacteria, and people fall into distinct metabotypes according to what they produce. That makes the response to any ellagitannin source partly a function of the microbiome rather than of the dose. Whether a given probiotic product shifts someone's metabotype has not been established.
Myrtle leaf essential oil, dominated by 1,8-cineole and myrtenyl acetate, is used in the same respiratory and topical contexts as peppermint and eucalyptus oils. Combining them is standard practice in aromatic blends. There is no comparative work on the combination.
Nothing specific on file for Myrtle. Match the label to the daily amount above, and tell your doctor what you take.
Not medical advice. Show the label to your pharmacist.These are the studies our verdict leans on, chosen from the 5 we read for Myrtle. The full linked list is below.
1 source behind our Myrtle verdict: peer-reviewed studies and registered clinical trials. Every one links straight to PubMed, the journal, or ClinicalTrials.gov. Read them yourself.
Evidence surfaced via Semantic Scholar (Allen Institute for AI) and ClinicalTrials.gov. Ranked by study type and citation weight, not cherry-picked.
Read this carefully. These are 29 voluntary, unverified reactions reported to the FDA (openFDA). The number mostly reflects how popular Myrtle is, not how risky it is. A report is not proof Myrtle caused anything. It is a signal of what to watch for, nothing more.
Source: openFDA adverse-event reports. Voluntary reporting, not an incidence rate.
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This information is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting any supplement regimen.