1. Introduction: The Persistent Challenge of HIV/AIDS in Nigeria
Nigeria bears one of the highest burdens of HIV/AIDS globally, with the sub-Saharan region accounting for the highest rate of HIV cases worldwide, primarily affecting African men and women. The virus, transmitted through parenteral exposure, neonatal contact, and sexual contact, has been a major public health concern for decades. While significant progress has been made in treatment modalities, particularly through Highly Active Antiretroviral Therapy (HAART), the disease continues to present formidable challenges.
HAART, which combines drugs with different mechanisms of action, has been the cornerstone of HIV management. However, it does not completely eradicate HIV, and its long-term use has been associated with toxicity and drug resistance. Additionally, the high cost and limited accessibility of antiretroviral therapy (ARV) in many parts of Nigeria mean that a significant proportion of people living with HIV/AIDS (PLWHA) do not have adequate access to conventional treatment.
These limitations have driven a heightened search for less expensive, less toxic, and more effective natural alternatives. Herbal medicines are gaining popularity due to their perceived efficacy and safety in managing several health disorders, including HIV. In Nigeria, where traditional medicine remains deeply embedded in healthcare practices, the integration of herbal remedies into HIV/AIDS management reflects both cultural heritage and practical necessity.
The World Health Organization (WHO) encourages the use of available resources for primary health care and recommends that governments prioritise the use and incorporation of proven traditional remedies into comprehensive health care. This review synthesises available literature on Nigerian medicinal plants and holistic approaches utilised in the management of HIV/AIDS, their modes of administration, scientific evidence supporting their use, and the broader context of complementary therapies.
2. Prevalence and Patterns of Herbal Medicine Use among HIV Patients
2.1 Extent of Usage
The use of complementary and alternative medicine (CAM), particularly herbal remedies, among HIV patients in Nigeria is well-documented, though prevalence varies across studies.
| Study Location | Herbal Medicine Usage Rate | Key Findings |
| Lagos University Teaching Hospital (LUTH) | 8.2% | Commonly used herbs: Jobelyn, Ginger, Garlic, Aloe vera |
| Ibadan, Oyo State | Documented use | 52 prescriptions recorded for STIs including HIV/AIDS |
| Okitipupa, Southwestern Nigeria | Documented use | HIV/AIDS infrequently cited; focus on venereal diseases |
The study at LUTH, involving 354 HIV patients attending APIN clinics, found that only 8.2% of respondents used herbal medicine concurrently with ARV therapy. This relatively low percentage may reflect increased awareness of potential drug interactions or healthcare provider advice against concurrent use. However, the actual prevalence may be higher, as patients may not always disclose herbal medicine use to their healthcare providers.
2.2 Commonly Used Herbal Remedies
The LUTH study identified several herbal remedies commonly used by HIV patients:
| Herbal Remedy | Active Constituents | Prevalence |
| Jobelyn | Sorghum bicolor plant leaves | 13.8% |
| Ginger | Essential oil | 17.2% |
| Garlic | Allicin, γ-glutamyl-(s)-ally-L-cysteine | 10.3% |
| Aloe vera | Hydroxyanthracene derivatives (Barbaloin) | 10.3% |
The primary reason for commencing herbal medicine was the perception that the medicine would boost their immunity (65.5%) . This reflects the understanding among PLWHA that immune function is critical to managing HIV/AIDS and that conventional therapies alone may not fully address immune restoration.
2.3 Demographic Factors and Patterns
A broader ethnobotanical survey in Ibadan examined the use of medicinal plants for sexually transmitted infections, including HIV/AIDS, across three Local Government Areas. The study, which involved 300 respondents knowledgeable in ethnomedicine, documented 52 prescriptions or formulations for various conditions including gonorrhoea, candidiasis, vaginitis, syphilis, HIV/AIDS, and STI-associated skin infections.
The study newly revealed the use of leaves of Ageratum conyzoides and Nicotiana tabacum in the management and treatment of HIV/AIDS. This demonstrates the dynamic nature of ethnobotanical knowledge, with new applications continually being documented.
3. Nigerian Herbal Remedies with Scientifically Validated Anti-HIV Activity
3.1 Anthocleista djalonensis: Potent HIV-1 Integrase Inhibitor
Anthocleista djalonensis, a plant belonging to the Gentianaceae family, has demonstrated remarkable anti-HIV-1 integrase activity in recent scientific studies. This plant has been traditionally used in Nigeria and other parts of sub-Saharan Africa to treat several health conditions, including pains, microbial infections, fever, malaria, constipation, dysentery, diarrhoea, inflammation, and various worm infestations .
Key Findings from Anti-HIV Assays:
| Plant | IC₅₀ (Anti-HIV-1 Integrase) | Activity |
| A. djalonensis | 0.01891 μg/mL | Most potent |
| V. cinerea | 0.709 μg/mL | Significant |
| P. angolensis | 5.21 μg/mL | Significant |
| Chicoric acid (Reference) | 0.006992 μM | Standard comparator |
The crude methanol extract of A. djalonensis roots demonstrated the highest potency against HIV-1 integrase, with an IC₅₀ of 0.01891 μg/mL. This finding is particularly significant because HIV-1 integrase is a critical enzyme for viral replication, and its inhibition represents a key therapeutic strategy. The study underscores the potential of plant extracts as innovative treatments for HIV-1 infection, as they can provide anti-HIV-1 integrase inhibitors.
Conversely, none of the extracts showed a dose response in the HIV-1 protease assay, suggesting a preference towards HIV-1 integrase rather than protease. This specificity is valuable for drug development, as it indicates targeted activity against a key viral enzyme.
3.2 Antimicrobial Activity against Opportunistic Infections
Most individuals with HIV/AIDS are more susceptible to opportunistic infections due to their weakened immune systems. The extracts of A. djalonensis, V. cinerea, and P. angolensis demonstrated broad-spectrum antimicrobial activity against pathogens representing skin, gastrointestinal, respiratory, typhoid fever, and vaginal yeast/thrush infections:
| Pathogen | Infection Type | A. djalonensis MIC (μg/mL) | V. cinerea MIC (μg/mL) | P. angolensis MIC (μg/mL) |
| S. aureus | Skin infections | 8 | – | – |
| E. coli | Gastrointestinal | 6.00 | 61 | 81 |
| P. aeruginosa | Respiratory | 11.00 | 8 | 8 |
| S. typhi | Typhoid fever | 5.00 | 67 | 40 |
| C. albicans | Vaginal yeast/thrush | 9.00 | 40 | 31 |
A. djalonensis root extracts displayed minimum inhibitory concentrations (MIC) of less than 100 μg/mL against all tested bacteria, indicating notable antibacterial action. The root extract showed the greatest results when tested against S. aureus (MIC: 8 μg/mL). The antimicrobial activity is consistent with the widely acknowledged traditional uses of these plants for managing skin, gastrointestinal, respiratory, typhoid fever, and vaginal yeast/thrush infections.
The dual activity—inhibiting HIV-1 integrase while also combating opportunistic infections—significantly enhances the therapeutic potential of these plants .
3.3 Jobelyn (Sorghum bicolor): Clinical Evidence for Immune Support
Jobelyn, a traditional West African herbal preparation developed from Sorghum bicolor plant leaves, has undergone controlled clinical evaluation in HIV-positive patients in Nigeria . This represents one of the most rigorously studied Nigerian herbal products for HIV/AIDS management.
Study Design and Findings:
| Study Phase | Participants | Treatment | Key Outcomes |
| Pilot Study | 10 HIV⁺ patients (not on ARVT) | Jobelyn 500 mg twice daily for 8 weeks | Significant increase in CD4⁺ (p<0.01) and haemoglobin (p<0.001) |
| Controlled Trial | 51 HIV⁺ patients | ARVT alone vs ARVT + Jobelyn for 12 weeks | Faster improvement in CD4⁺; significant at 6 weeks (p<0.001) |
Key Findings from the Controlled Trial:
- Patients receiving ARVT alone showed significant improvement in CD4⁺ counts across 12 weeks (p<0.01)
- Patients receiving ARVT + Jobelyn showed a more robust improvement, reaching high statistical significance at 6 weeks (p<0.001) and remaining highly significant at 12 weeks (p<0.001)
- The CD4⁺ counts in the ARVT + Jobelyn group were significantly higher than the ARVT alone group at both 6 and 12 weeks (p<0.001)
- All 10 patients in the pilot study showed improvement in both CD4⁺ count and haemoglobin levels
The study concluded that “consumption of Jobelyn contributed to improved hemoglobin levels and increased CD4+ T-cell counts in Nigerian HIV⁺ patients”. The suggested mechanisms of action include immune modulation, activation of natural killer cells, and up-regulation of antiviral chemokines.
The safety profile of Jobelyn has been evaluated in laboratory animals, showing a satisfactory safety and side-effects profile. Patients’ appetite and weight increased during the study, with improvement in general well-being.
3.4 Jatropha curcas: In Silico Anti-HIV Activity
A recent study investigated the phytochemical composition and in silico anti-HIV activity of compounds from Jatropha curcas leaf extracts, using molecular docking to predict interactions between identified compounds and HIV target enzymes.
Key Findings:
| Parameter | Finding |
| Phytochemicals identified | 16 compounds |
| Major compound | Eicosanoic acid (38.7% relative area) |
| Other major compounds | cis-11-eicosanoic acid, pentadecanoic acid |
| Docking activity | Thymol: moderate docking score (-4.34), stronger binding affinity with HIV-1 integrase |
| Notable interaction | Eicosanoic acid with HIV-1 protease (binding affinity -4.2) |
The molecular docking studies indicated the potential of J. curcas phytochemicals to interact with HIV-1 enzymes, implying that eicosanoic acid and thymol present in J. curcas could possess anti-HIV activity. This provides a foundation for further investigation of this plant as a potential source of anti-HIV compounds.
3.5 Other Nigerian Plants with Documented HIV/AIDS Activity
Several other Nigerian plants have been documented in traditional medicine for HIV/AIDS management:
| Plant | Activity | Evidence Type |
| Ageratum conyzoides | HIV/AIDS management | Ethnobotanical documentation |
| Nicotiana tabacum | HIV/AIDS management | Ethnobotanical documentation |
| Black seed oil | HIV infection and related opportunistic infections | Traditional use |
| Terminalia species | Diarrhoea, STIs, skin rashes, tuberculosis | Traditional use |
| Ancistrocladus korupensis | Prevention of HIV penetration of host cells | Reported activity |
| Pelargonium sidoides | Prevention of HIV penetration of host cells | Reported activity |
| Scutellaria baicalensis | Prevention of HIV penetration of host cells | Reported activity |
A book titled ‘Herbal Spices: Local Foods As Medicines’ also documents herbal treatments for HIV/AIDS using scientifically validated remedies derived from local foods. This reflects the growing recognition among health professionals of the central role of food and traditional diets in maintaining global health.
4. Mechanisms of Action: How Nigerian Herbs Work Against HIV
4.1 HIV-1 Integrase Inhibition
| Plant | Target | Mechanism |
| Anthocleista djalonensis | HIV-1 integrase | IC₅₀ = 0.01891 μg/mL |
| Vernonia cinerea | HIV-1 integrase | IC₅₀ = 0.709 μg/mL |
| Pycnanthus angolensis | HIV-1 integrase | IC₅₀ = 5.21 μg/mL |
| Jatropha curcas (thymol) | HIV-1 integrase | Moderate docking score |
The inhibition of HIV-1 integrase is a critical therapeutic strategy because this enzyme is essential for viral replication, integrating viral DNA into the host genome.
4.2 Immune Modulation and CD4⁺ Support
| Plant | Effect | Evidence |
| Jobelyn (Sorghum bicolor) | Increased CD4⁺ T-cell counts | Clinical trial; significant at 6 weeks (p<0.001) |
| Jobelyn | Activation of natural killer cells | In vitro evidence |
| Jobelyn | Up-regulation of antiviral chemokines | In vitro evidence |
The immune-boosting effects of Jobelyn are particularly relevant for HIV management, as CD4⁺ T-cell count is a key marker of immune function and disease progression.
4.3 Antimicrobial Activity Against Opportunistic Infections
| Plant | Pathogens | MIC Range |
| Anthocleista djalonensis | S. aureus, E. coli, P. aeruginosa, S. typhi, C. albicans | 5-11 μg/mL |
| Vernonia cinerea | E. coli, P. aeruginosa, S. typhi, C. albicans | 8-67 μg/mL |
| Pycnanthus angolensis | E. coli, P. aeruginosa, S. typhi, C. albicans | 8-81 μg/mL |
The dual activity—anti-HIV combined with antimicrobial effects—makes these plants particularly valuable for HIV/AIDS management, where opportunistic infections are a major cause of morbidity and mortality.
4.4 Haemoglobin Support
| Plant | Effect | Evidence |
| Jobelyn | Increased haemoglobin levels | Clinical trial; significant at 4 weeks (p<0.001) |
Anaemia is common in HIV/AIDS, and the improvement in haemoglobin levels observed with Jobelyn represents an additional therapeutic benefit.
5. Holistic and Complementary Therapies
5.1 Nutritional Support
The book titled ‘Herbal Spices: Local Foods as Medicines’ emphasises the role of diet as medicine for chronic conditions, including HIV/AIDS. The book identifies scientifically validated remedies derived from local foods and explores how traditional cultures integrated food and medicine, highlighting how specific foods were valued for their disease-preventing and healing properties.
The book discusses how diet plays a role in regulating cardiovascular health, balancing blood sugar, controlling inflammation, and aiding digestion—all relevant to HIV/AIDS management. It argues that lifestyle changes, particularly in diet, have contributed to the increasing prevalence of non-communicable diseases and that conventional medicines are becoming less effective due to drug resistance and adverse reactions .
5.2 Prayer and Spiritual Interventions
While not specifically quantified in HIV/AIDS studies, prayer and spiritual interventions are commonly integrated into healthcare-seeking behaviour across Nigerian cultures. In studies on other chronic conditions, prayer is frequently reported alongside other therapies.
5.3 Lifestyle Modifications
Key recommendations:
- Dietary improvement: Incorporating local foods with medicinal properties
- Immune support: Through nutrition and herbal supplementation
- General well-being: Through diet, exercise, and stress reduction
6. Safety Considerations and Clinical Implications
6.1 Key Safety Concerns
| Concern | Implication |
| Drug interactions | Herbal remedies may interact with ARVs, resulting in adverse reactions or therapeutic failure |
| Lack of standardisation | Variable potency and possible contamination |
| Limited clinical trial data | Most evidence from in vitro and in silico studies; human data limited |
| Concurrent use without disclosure | Healthcare providers may not be aware of herbal use |
| Perception vs. reality | Marginal improvement not always clinically significant; immune boosting perception may not translate to viral load control |
6.2 Potential Drug Interactions
The LUTH study found that herbal medicines “have potentials to interact with ARVs and thus result in adverse reactions and possibly therapeutic failure”. There is a need for “thorough investigation of the pharmacological action of these herbal medicines in HIV treatment taking into consideration their pharmacokinetic and toxicological profile”.
The study found marginal improvement though not significant (p ≥ 0.05) in CD4 counts (489.8 ± 195.2; 419.1 ± 236.2) and viral load (5117.8 ± 26092.0; 31136.7 ± 197954.6) of HIV patients on herbal drugs compared to those not on herbal drugs. This suggests that while some benefits may exist, caution is warranted.
6.3 Herbal Remedies and ARV Adherence
The major reason for commencing herbal medicine—the perception that it will boost immunity (65.5%)—can be both beneficial and problematic. While immune support is important, reliance on herbal remedies as a substitute for ARV therapy could lead to poor adherence and therapeutic failure. Healthcare providers should engage with patients about their use of CAM to ensure that it complements rather than replaces conventional treatment.
6.4 Recommendations for Safe Use
For Patients and Families:
- Disclose all herbal medicine use to healthcare providers
- Do not discontinue ARV therapy in favour of herbal remedies
- Use products from reputable sources, preferably with NAFDAC registration
- Monitor for adverse effects and report immediately
- Seek medical guidance before starting any herbal regimen
For Healthcare Providers:
- Ask about herbal medicine use during clinical consultations
- Provide evidence-based guidance on complementary therapies
- Monitor patients closely for drug interactions and adverse effects
- Document CAM use in patient records
- Support research on safety and efficacy of commonly used herbs
For Researchers:
- Conduct controlled clinical trials on promising herbal remedies
- Evaluate safety profiles and drug interactions with ARVs
- Standardise dosing protocols
- Identify and characterise active compounds
7. Research Gaps and Future Directions
7.1 Key Research Needs
| Area | Priority |
| Controlled clinical trials | Most evidence from in vitro and in silico studies; human data needed |
| Drug interaction studies | Interactions with ARVs |
| Standardised dosing protocols | Defined dosing for herbal formulations |
| Pharmacokinetic studies | Absorption, distribution, metabolism, elimination |
| Long-term safety studies | Chronic use effects |
| Viral load studies | Effect on viral load, not just CD4⁺ count |
7.2 Opportunities
- Development of standardised formulations: Moving from traditional preparations to pharmaceutical-grade products
- Novel HIV-1 integrase inhibitors: The potent activity of A. djalonensis warrants further investigation
- Dual-activity agents: Plants with both anti-HIV and antimicrobial properties
- Integration strategies: Combining evidence-based herbal therapies with conventional care
- Traditional knowledge preservation: Documenting indigenous knowledge before it is lost
The IC₅₀ values of 0.01891 μg/mL for A. djalonensis extracts against HIV-1 integrase are remarkable and suggest that this plant contains compounds that could be developed into novel anti-HIV therapeutics. The preference for integrase over protease inhibition is an important finding for drug development.
8. Conclusion
HIV/AIDS remains one of the most significant public health challenges in Nigeria, with the sub-Saharan region bearing the highest global burden. While HAART has transformed HIV from a fatal disease to a manageable chronic condition, its limitations—including toxicity, drug resistance, and limited accessibility—have driven continued reliance on traditional and complementary approaches.
The scientific literature reveals promising Nigerian plants with anti-HIV potential:
- Anthocleista djalonensis demonstrated potent anti-HIV-1 integrase activity with an IC₅₀ of 0.01891 μg/mL—the most potent among tested plants—with broad-spectrum antimicrobial activity against opportunistic infections
- Vernonia cinerea and Pycnanthus angolensis also demonstrated significant anti-HIV-1 integrase activity
- Jobelyn (Sorghum bicolor) showed clinical evidence of improved CD4⁺ T-cell counts and haemoglobin levels in HIV-positive patients, with a faster and more robust improvement when combined with ARVT
- Jatropha curcas phytochemicals demonstrated potential anti-HIV activity in silico, with thymol showing stronger binding affinity with HIV-1 integrase
Ethnobotanical surveys have documented the use of numerous additional plants, including Ageratum conyzoides and Nicotiana tabacum for HIV/AIDS management.
However, challenges remain:
- Limited human clinical trial data for most remedies
- Potential drug interactions with ARVs
- Lack of standardisation for many herbal products
- Need for thorough pharmacological investigation, including pharmacokinetic and toxicological profiling
The path forward requires:
- Acknowledging and respecting traditional knowledge while subjecting it to rigorous scientific scrutiny
- Strengthening regulatory oversight of herbal products through NAFDAC
- Promoting open communication between patients and healthcare providers
- Investing in clinical research on safety, efficacy, and mechanisms of action
- Developing integration strategies that combine the best of both systems
- Preserving and documenting indigenous knowledge before it is lost
The most promising plants identified—particularly A. djalonensis with its remarkable anti-HIV-1 integrase activity and Jobelyn with its clinical evidence for immune support—warrant further investigation through controlled clinical trials. As Nigeria continues its fight against HIV/AIDS, the careful integration of evidence-based traditional medicine into the healthcare system offers promising strategies for improving outcomes and quality of life for those living with this condition.
9. References
- Ethnobotanical study on the use of materia medica and adjuvants for the management of venereal diseases in Okitipupa, southwestern Nigeria. ScienceDirect. 2026.
- Gbadamosi IT. Ethnobotanical Survey of Plants Used for the Treatment and Management of Sexually Transmitted Infections in Ibadan, Nigeria. Ethnobotany Research and Applications. 2014;12:659-669.
- Okoro IS, Umoh SD, Asekunowo AK, et al. Exploring the antimicrobial and anti-HIV-1 properties of Anthocleista djalonensis, Vernonia cinerea, and Pycnanthus angolensis extracts. Discover Chemistry. 2024;1:72.
- Awodele O, Olayemi SO, Adeyemo TA, Sanya TA, Dolapo DC. Use of complementary medicine amongst patients on antiretroviral drugs in an HIV treatment centre in Lagos, Nigeria. Journal of Alternative and Complementary Medicine. 2012.
- Adodo A, Iwu M. Phytotherapy of HIV-AIDS and Opportunistic Infections with Nigerian Plants. In: Handbook of African Medicinal Plants. Taylor & Francis. 2020.
- Yusuf OA, Ologe MO, Mohammed AA, Atolani O, Osamor V. Phytochemical Analysis and In Silico Anti-HIV Activity Studies of Compounds from Jatropha curcas Leaves Extracts. Journal of Science and Information Technology. 2025;19(1):43-54.
- Muanya C. Herbal Spices: Local Foods As Medicines. EPH Business Network Limited. 2025.
- Ayuba GI, Jensen GS, Benson KF, Okubena AM, Okubena O. Clinical Efficacy of a West African Sorghum bicolor-Based Traditional Herbal Preparation Jobelyn Shows Increased Hemoglobin and CD4+ T-Lymphocyte Counts in HIV-Positive Patients. Journal of Alternative and Complementary Medicine. 2014;20(1):53-56.