# Ameliorative effects of vitamin C and garlic (Allium sativum) on nifedipine-induced reproductive dysfunction in a male albino rat model

**Authors:** Ugochinyere J. Njoga, Kenneth O. Anya, Samuel O. Ekere, Faith. N. Amune, Lawrence U. Eze, Mark E. Awachie, Loveth C. Ojimba, Izuchukwu S. Ochiogu, Emmanuel O. Njoga

PMC · DOI: 10.3389/fvets.2025.1725725 · Frontiers in Veterinary Science · 2026-01-29

## TL;DR

This study shows that vitamin C and garlic can help reduce reproductive issues caused by the drug nifedipine in male rats.

## Contribution

The study introduces a novel combination of vitamin C and garlic to mitigate nifedipine-induced reproductive toxicity in rats.

## Key findings

- Nifedipine significantly reduced sperm motility, viability, and normal morphology in rats.
- The vitamin C and garlic combination improved sperm parameters more than either treatment alone.
- Histopathological analysis showed better preservation of testicular and epididymal structures with vitamin C and garlic.

## Abstract

Nifedipine, a calcium channel blocker widely prescribed for hypertension, has been implicated in oxidative stress–mediated reproductive toxicity. This study investigated the ameliorative effects of vitamin C and garlic (Allium sativum) on nifedipine-induced reproductive dysfunction in a male albino rat model.

Twenty-five adult male rats were randomized into control and treatment groups, receiving nifedipine (0.571 mg/kg) alone or in combination with vitamin C (200 mg/kg) and/or garlic extract (200 mg/kg) for 40 days. Reproductive parameters and histopathological changes in the testes and epididymis were assessed.

Nifedipine administration significantly reduced sperm parameters compared to control-sperm motility (38.9 ± 2.53 vs. 83.25 ± 1.65 in controls, P ≤ 0.05), viability (88.03 ± 1.87 vs. 94.00 ± 0.98), and normal morphology (80.75 ± 0.85 vs. 89.5 ± 0.65), while co-administration of vitamin C and vitamin C + garlic combination slightly mitigated these effects, improving sperm motility to 41.25 ± 6.95 and 45.00 ± 7.5, respectively. The combined treatment produced the most profound improvement, restoring sperm motility (6.1 % increase), viability (3.15 % increase, close to control values), and normal sperm (4% ameliorative effect, P ≤ 0.05). Histopathological analysis revealed substantial preservation of testicular and epididymal integrity in the vitamin C and less in the combination (vitamin C + garlic) and garlic treatment groups.

Nifedipine caused significant impairments in sperm quality and histological integrity. Vitamin C and garlic combination produced a statistically significant improvement in normal sperm morphology, with other parameters showing non-significant numerical increases. Further research with larger sample sizes and biochemical analyses is needed to clarify the extent of antioxidant influence on nifedipine-induced reproductive alterations.

## Linked entities

- **Chemicals:** nifedipine (PubChem CID 4485), vitamin C (PubChem CID 54670067)
- **Species:** Rattus norvegicus (taxon 10116)

## Full-text entities

- **Diseases:** hypertension (MESH:D006973), reproductive dysfunction (MESH:D060737)
- **Chemicals:** Nifedipine (MESH:D009543), Vitamin C (MESH:D001205)
- **Species:** Rattus norvegicus (brown rat, species) [taxon 10116], Allium sativum (garlic, species) [taxon 4682]

## Full text

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## Figures

18 figures with captions in the complete paper: https://tomesphere.com/paper/PMC12893950/full.md

## References

77 references — full list in the complete paper: https://tomesphere.com/paper/PMC12893950/full.md

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Source: https://tomesphere.com/paper/PMC12893950