Finasteride Interactions: Drugs, Alcohol & Foods To Avoid

Finasteride is an oral medication used to treat an enlarged prostate and male pattern hair loss.

If a healthcare provider recommends Finasteride to help manage your medical condition, then you may have questions about it. 

Understanding the potential risks and benefits of taking a prescription drug is essential, and Finasteride is no exception. 

This article discusses potential Finasteride interactions and vital information such as possible side effects. 

We will also offer suggestions regarding foods to eat and avoid while taking Finasteride.

What drugs can finasteride interact with?

There are no known major medication interactions with Finasteride. 

According to the following drugs have a moderate interaction with Finasteride:

  • Antifungals, such as itraconazole or fluconazole
  • Fluvoxamine
  • Ginseng
  • HIV medications, such as nelfinavir or saquinavir
  • Nefazodone
  • Sirolimus or Tacrolimus
  • Terazosin
  • Voriconazole.

Fortunately, finasteride interactions are limited and primarily pertain to individuals who should avoid its use, such as women (including pregnant women) and children. 

Additionally, individuals with specific physical impairments, like hepatic impairment, may experience difficulties metabolizing and eliminating the drug. 

It should be noted that finasteride may affect the blood test results used to detect prostate cancer.

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Does finasteride interact with alcohol?

Although health providers typically discourage the consumption of alcohol, there aren’t known interactions between taking finasteride and consuming alcohol. 

However, be aware that there needs to be more information on the potential interactions between consuming alcohol and taking finasteride. 

Drinking alcohol could potentially increase the likelihood of experiencing side effects, including erectile dysfunction, from finasteride. 

Additionally, alcohol consumption may also exacerbate certain benign prostate conditions.

If you drink alcohol, talk with your doctor about how much alcohol is safe to consume while taking finasteride.

Excessive alcohol use can have serious long-term health consequences, including an increased risk of developing:

  • heart disease
  • liver disease
  • stroke
  • high blood pressure 

Does finasteride interact with any supplements or herbs?

Certain herbs can interact with finasteride and impact its effectiveness. For instance, saw palmetto might increase the risk of bleeding when taken with finasteride. Additionally, stinging nettle may reduce the effectiveness of finasteride.

Overall, there are no severe finasteride interactions with many supplements or herbs, and no adverse finasteride interactions have been reported by the millions of people who have used it over the past 30 years. 

While finasteride is generally considered safe, proper precautions must be taken before and during drug use, so it’s essential to disclose all medications and supplements to your healthcare provider before taking finasteride.

Foods to avoid while taking finasteride

While no specific foods have been proven to interact negatively with finasteride, there are some foods you may wish to avoid since they can worsen prostate health.

Red and processed meat

It is recommended to consume red and processed meats containing compounds like HCAs in moderation due to the formation of these compounds during high-temperature cooking. 

However, no direct evidence exists that consuming these foods would interact with finasteride. 


Evidence on ginseng and finasteride is mixed. Some evidence suggests there might be a moderate drug interaction between ginseng and finasteride. However, another study found that ginseng may prevent some of the side effects of finasteride.

It is generally advised to avoid consuming ginseng while taking finasteride, but you should consult with your doctor or pharmacist to be sure.

prostate health book

Foods to eat when taking finasteride

Healthcare professionals suggest that consuming fruits, vegetables, and whole grains may alleviate benign prostate enlargement, a condition that finasteride can treat. 

Incorporating zinc-rich foods into your diet may aid hair growth if you’re using finasteride to treat hair loss. 

While onions and other zinc-rich foods are believed to promote hair growth, there is no conclusive evidence that consuming them will significantly impact finasteride’s effectiveness.

Zinc is crucial in numerous bodily functions, such as the immune system, wound healing, and cell growth and division. 

It has been found to impact prostate health positively, and insufficient zinc levels have been linked to BPH. Furthermore, zinc has a role in promoting hair growth and reducing hair loss. 

Some foods that are rich in zinc and may help improve prostate health and hair growth are:

  • Oysters
  • Beef
  • Pumpkin seeds
  • Seafood, such as crab and lobster
  • Dark chocolate
  • Spinach
  • Cashews
  • Chickpeas

Eating foods that are rich in zinc can have positive effects on your health. While zinc is known to be helpful for BPH and hair growth, more research is necessary to comprehend its impact on these conditions fully.

Frequently asked questions

Is finasteride a beta blocker?

No, finasteride is not a beta blocker. Finasteride is a type of 5-alpha-reductase inhibitor. 

Can you take finasteride with antibiotics?

It is safe to take finasteride and antibiotics together. There is no evidence to suggest that either medication will be less effective when taken together. However, it is always advisable to consult your doctor before starting any combination of medications.


If you are a man experiencing an enlarged prostate or male pattern hair loss, your doctor may prescribe finasteride as an oral medication to reduce associated symptoms. However, it is essential to take proper precautions before and during use. 

Finasteride has limited interactions with other drugs, and studies have shown no significant interactions with a few specific medications. It does not appear to affect the cytochrome P450-linked drug-metabolizing enzyme system.

Consuming alcohol while taking finasteride may increase the risk of side effects and exacerbate certain benign prostate conditions. It is necessary to discuss with your doctor how much alcohol is safe to consume while taking finasteride.

Certain herbs, such as saw palmetto and stinging nettle, may interact with finasteride and impact its effectiveness. 

Zinc-rich foods, like oysters, beef, pumpkin seeds, seafood, dark chocolate, spinach, cashews, and chickpeas, may aid in hair growth and prostate health.

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  2. “Finasteride – Drug Usage Statistics”. ClinCalc. Retrieved 7 October 2022.
  3. Finasteride: Uses, interactions, mechanism of action | DrugBank Online. (n.d.). DrugBank. 
  4. Aggarwal S, Thareja S, Verma A, Bhardwaj TR, Kumar M (February 2010). “An overview on 5alpha-reductase inhibitors”. Steroids. 75 (2): 109–53. 
  5. Bent, S., Kane, C., Shinohara, K., Neuhaus, J., Hudes, E. S., Goldberg, H., & Avins, A. L. (2006). Saw palmetto for benign prostatic hyperplasia. The New England journal of medicine, 354(6), 557–566.
  6. Ghorbanibirgani, A., Khalili, A., & Zamani, L. (2013). The Efficacy of Stinging Nettle (Urtica Dioica) in Patients with Benign Prostatic Hyperplasia: A Randomized Double-Blind Study in 100 Patients. Iranian Red Crescent Medical Journal, 15(1). 
  7. Nasr, S., Moustafa, M. Z., Boughdady, W. a. E. A., & Yousry, M. M. (2020). A histological study of the effect of panax ginseng versus finasteride on induced benign prostatic hyperplasia in rats with potentiality of spontaneous recovery. The Egyptian Journal of Histology. 
  8. Park, J. Y., Park, W. Y., Song, G., Jung, S. J., Kim, B., Choi, M., Kim, S. H., Park, J., Kwak, H. J., Ahn, K. S., Lee, J. Y., & Um, J. (2023). Panax ginseng C.A. meyer alleviates benign prostatic hyperplasia while preventing finasteride-induced side effects. Frontiers in Pharmacology, 14. 
  9. Bhowmik, D., Chiranjib, K., & Kumar, S. (2010). A potential medicinal importance of zinc in human health and chronic. Int J Pharm, 1(1), 05-11.

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