Abstract
Unani medicine has a long history of using compound formulations, including tonics, for maintaining health and managing different conditions. However, the fact that a product is described as “natural” or has been traditionally used does not by itself establish that it is safe for continuous, long-term consumption. The safety of a Unani tonic depends on its ingredients, dose, duration of use, manufacturing quality, possible contaminants, and interactions with other medicines.
Scientific literature indicates that traditional medicines can sometimes be associated with adverse effects, including liver and kidney injury, while the available safety evidence for many complex herbal formulations remains limited. Researchers have also identified concerns involving adulteration, contamination, inaccurate labeling, and herb–drug interactions. The World Health Organization therefore emphasizes quality assurance, appropriate regulation and pharmacovigilance for traditional medicine products, including Unani medicine. World Health Organization
This does not mean that every Unani tonic is unsafe or unsuitable for prolonged use. Rather, long-term use should be considered formulation-specific and should ideally follow the advice of a qualified healthcare practitioner. Particular caution is appropriate for people taking prescription medicines or those with existing liver, kidney or other chronic conditions.
Understanding Long-Term Use of Unani Tonics
Unani medicine uses a wide range of formulations prepared from botanical, mineral and other natural substances. Tonics may be formulated for different traditional purposes and can contain several ingredients in a single preparation.
Because of this complexity, it is difficult to answer the question “Are Unani tonics safe for long-term use?” with a simple yes or no.
The more appropriate question is: Is this particular formulation, at this dose and for this duration, supported by adequate safety evidence?
This distinction is important because safety cannot be determined solely from the traditional history of a medicine. A product may have been used traditionally for generations, while detailed modern information about long-term toxicity, interactions, manufacturing consistency or rare adverse effects may still be limited.
A review specifically discussing pharmacovigilance in Unani medicine highlighted several challenges in assessing safety, including multiple ingredients, inadequate standardization, variation in manufacturing processes, contamination, adulteration and misidentification of herbs. The authors also noted that rare or delayed adverse effects can be difficult to identify simply from traditional experience. PubMed Central (PMC)
Does “Natural” Mean Safe for Long-Term Use?
One of the most common misconceptions surrounding herbal medicine is that natural substances cannot cause harm.
Scientific evidence does not support this assumption.
Plants contain biologically active compounds, and these compounds can produce both therapeutic and adverse effects. A systematic review of adverse effects associated with herbal medicines found that reported adverse reactions can involve several organ systems, including the liver and kidneys. PubMed Central (PMC)
Liver safety is particularly relevant when discussing long-term use. A systematic review of published cases of herb-induced liver injury found that herbal products can, in some circumstances, be associated with liver injury ranging from abnormal liver enzymes to more serious forms of hepatic disease. PubMed
Another evidence-based review identified hepatotoxicity associated with a number of botanical products and emphasized that the risk can arise from the herb itself, combinations of ingredients, herb–drug interactions, adulteration or contamination. PubMed
This does not mean that herbal or Unani medicines routinely cause liver damage. Rather, it means that safety should be evaluated scientifically instead of assuming that prolonged use is automatically harmless.
Why the Ingredients Matter
A Unani tonic may contain a single botanical ingredient or a combination of several ingredients. Some formulations may also contain substances of mineral or other origin.
Consequently, the safety profile of one tonic cannot automatically be applied to another.
For example, two products may both be marketed as “herbal tonics” while containing completely different ingredients and concentrations. Their possible effects, interactions and appropriate duration of use may therefore be very different.
The World Health Organization’s Benchmarks for the Practice of Unani Medicine emphasizes minimum requirements concerning safety, quality assurance, regulation and appropriate practice. World Health Organization
This is consistent with a broader principle in modern pharmacovigilance: the safety of a medicine depends not only on its traditional identity but also on its composition, quality, dose, method of preparation and monitoring.
Quality and Contamination Are Important Considerations
Long-term consumption makes product quality particularly important.
Herbal and traditional medicines can be affected by problems such as:
- contamination with heavy metals;
- microbial contamination;
- incorrect identification of plant material;
- substitution of ingredients;
- adulteration with undeclared substances;
- variations in the concentration of active constituents; and
- inaccurate or incomplete labeling.
The WHO specifically identifies quality control, contaminants, residues and good manufacturing practices as important components of the safe use of herbal medicines. World Health Organization
Research on traditional Indian medicines has also documented concerns regarding toxic metals. One study examining traditional Indian medicines reported measurable levels of lead, arsenic and mercury in some tested products and included medicines belonging to traditional Indian systems such as Ayurveda, Siddha and Unani. PubMed Central (PMC)
These findings should not be interpreted as evidence that every Unani medicine contains heavy metals. They demonstrate instead why quality-controlled manufacturing and appropriate testing are important when a medicine is intended for repeated or prolonged consumption.
What About Liver Safety?
The liver plays a central role in metabolizing many medicines and naturally occurring compounds.
Some herbal substances can affect liver function, and the risk may be influenced by dose, individual susceptibility, other medicines and the composition of the product.
The NIH’s LiverTox resource notes that some traditional herbal medicines have been associated with hepatic injury and also highlights problems such as uncertain composition, contamination and interactions between multiple herbal products or conventional medicines. NCBI
For this reason, someone considering prolonged use of a Herbal Unani liver tonic should not assume that continuous use is automatically beneficial simply because the product is traditionally described as a tonic.
The appropriate duration should depend on the specific formulation and its intended use.
People with known liver disease should be particularly careful and should discuss herbal or Unani products with an appropriately qualified healthcare professional before starting prolonged treatment.
Can Unani Tonics Interact With Other Medicines?
Yes, potential interactions are another reason to consider professional guidance during long-term use.
A person may simultaneously take medicines for diabetes, blood pressure, cholesterol, thyroid disorders, blood clotting or other chronic conditions. Herbal ingredients can potentially influence drug metabolism or pharmacological effects.
The problem becomes more complicated when a tonic contains numerous ingredients because determining which constituent is responsible for an interaction may be difficult.
Scientific reviews of herbal medicines have therefore emphasized the importance of considering herb–drug interactions when evaluating their safety. PubMed Central (PMC)
Anyone taking regular prescription medicines should disclose all herbal and Unani products to their healthcare provider.
Does Research Show That All Unani Tonics Are Unsafe?
No. It would be scientifically incorrect to generalize safety concerns from particular products or ingredients to all Unani tonics.
Clinical research on individual Unani formulations has sometimes reported short-term safety under specific study conditions. For example, a randomized placebo-controlled clinical trial evaluating the Unani polyherbal formulation Tiryaq Wabai reported no significant differences between treatment and placebo groups in several measured liver and kidney function parameters during the study period. PubMed Central (PMC)
However, this type of evidence should not automatically be interpreted as proof of indefinite safety. A clinical trial lasting several weeks cannot establish what happens after years of continuous use.
This distinction between short-term clinical safety evidence and long-term safety evidence is especially important when discussing daily tonic use.
How Can Long-Term Use Be Made More Responsible?
For someone considering prolonged use of a Unani tonic, several practical precautions are reasonable:
1. Know the complete formulation
Check the product label for the full list of ingredients, quantities, recommended dose and manufacturer information.
2. Choose quality-controlled products
Manufacturing standards, testing and traceability are important, particularly for products intended for regular consumption.
3. Follow the recommended dose
Increasing the dose because a product is perceived as “natural” does not necessarily increase its benefits and may increase risk.
4. Tell your doctor about herbal medicines
This is especially important when taking prescription medicines or multiple supplements.
5. Avoid unnecessary combinations
Taking several tonics, herbal supplements and conventional medicines simultaneously can make adverse effects and interactions more difficult to identify.
6. Pay attention to unusual symptoms
Persistent nausea, vomiting, unusual fatigue, abdominal discomfort, itching, dark urine, yellowing of the eyes or skin, or other unexplained symptoms should receive medical attention rather than being ignored as a normal part of “detoxification.”
What Does the Evidence Ultimately Suggest?
The scientific evidence supports a product-specific approach rather than treating all Unani tonics as either completely safe or inherently dangerous.
Traditional use can provide valuable knowledge, but long-term safety requires additional considerations: standardized composition, quality control, appropriate dosing, evidence from clinical studies, pharmacovigilance and awareness of possible interactions.
The WHO specifically emphasizes that safety in traditional medicine depends on factors including practitioner competence, product quality, effective communication and regulatory support. It also recommends stronger systems for monitoring adverse events associated with traditional medicine products. World Health Organization
Therefore, a Unani tonic may be appropriate for prolonged use in some circumstances, but long-term use should not be assumed to be safe merely because the product is traditional or herbal. The formulation, ingredients, dose, duration, quality and individual health circumstances all matter.
For consumers interested in ayurvedic medicine for liver health, a Herbal liver detox formula, or a Herbal Unani liver tonic, the same principle applies: examine the ingredients and evidence rather than relying solely on the words “natural,” “herbal” or “traditional.”
Shahi Herbal products, like any herbal or traditional formulation, should be considered in the context of their specific ingredients, recommended use and available safety evidence rather than making blanket assumptions about long-term use.
Keywords: ayurvedic medicine for liver health, Herbal liver detox formula, Herbal Unani liver tonic, Shahi Herbal, Unani tonic, Unani medicine safety, long-term use of Unani medicine, herbal medicine safety, herbal liver health, traditional medicine safety
References
- World Health Organization (WHO). WHO Benchmarks for the Practice of Unani Medicine. 2022. ISBN: 9789240042698. World Health Organization
- World Health Organization. Pharmacovigilance for Traditional Medicine Products: Why and How? 2018. WHO reference: 10665/259854. World Health Organization
- WHO. Traditional Medicine — Questions and Answers. Updated information on safety, quality assurance, regulation and pharmacovigilance. World Health Organization
- Borgio JFA, et al. Importance of pharmacovigilance in Unani system of medicine. PMCID: PMC3038517. PubMed Central (PMC)
- Teschke R, et al. Hepatotoxic botanicals – an evidence-based systematic review. PMID: 24021288. PubMed
- Suk KT, et al. Systematic review of published data on herb induced liver injury. Journal of Ethnopharmacology, 2019. DOI: 10.1016/j.jep.2019.01.006; PMID: 30639232. PubMed
- Elinav E, et al. Systematic review: hepatotoxic events associated with herbal medicinal products. Alimentary Pharmacology & Therapeutics, 2003. PMID: 12950418. PubMed
- Björnsson HK, et al. Chinese and Other Asian Herbal Medicines. LiverTox, NCBI Bookshelf. NCBI
- Saper RB, et al. Lead, Mercury, and Arsenic in US- and Indian-Manufactured Ayurvedic Medicines Sold via the Internet. JAMA, 2008. PMCID: PMC2755247. PubMed Central (PMC)
- Patwardhan B, et al. Ayurveda formulations: A roadmap to address the safety concerns. PMCID: PMC5747514; PMID: 29122454. PubMed Central (PMC)
- Malik R, et al. Integration of materiovigilance in Unani medicine: A step towards patient safety. Journal of Ayurveda and Integrative Medicine, 2026;17(1):101266. DOI: 10.1016/j.jaim.2025.101266; PMID: 41619565; PMCID: PMC12887247. PubMed
