Vitamin C is a water-soluble vitamin that acts as an antioxidant in the body. It helps to protect cells from damage caused by free radicals, which are unstable molecules that can damage DNA and other important cell components. Studies have shown that vitamin C also helps to support the immune system and may reduce the risk of certain diseases, such as heart disease and cancer. It’s also necessary for the formation of collagen, which is an important protein that helps to keep skin, blood vessels, and other tissues healthy. You can prevent and overcome several health challenges with just a daily intake of vitamin C supplements.
Sources of vitamin C
The best food sources of vitamin C include citrus fruits, bell peppers, kiwi, strawberries, and broccoli.
Vitamin C supplements are also available in the form of pills, chewable tablets, and liquid drops.
Benefits of vitamin C
It’s an antioxidant that helps protect sperm from oxidative damage. Studies have found that men with higher levels of vitamin C have better sperm quality, including higher counts and improved motility.
Vitamin C may also help improve sexual function by increasing nitric oxide levels and improving blood flow.
Effects of vitamin C on sperm count
Research has shown that vitamin C reduces oxidative stress, which is linked to decreased sperm count, protects sperm DNA, and improves motility. Vitamin C may increase the levels of a hormone called testosterone, which plays a role in sperm production.
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Effects of vitamin C on erectile dysfunction
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Effects of vitamin C on premature ejaculation
Although there is some evidence that vitamin C may help with erectile dysfunction, there is less evidence that it can help with premature ejaculation. However, some research has found that vitamin C’s role in nitric oxide production may indirectly support ejaculation control, though evidence is limited (7). L-arginine in some supplements might extend ejaculation latency, but consult a doctor for premature ejaculation concerns.
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Effects of vitamins C on women’s sexual function
While there is more research on the effects of vitamin C on men’s sexual performance, there is some evidence that it may also have benefits for women. For example, vitamin C may boost women’s sexual desire by reducing stress and improving blood flow, though data is less robust than for men. Dopamine effects are speculative and need further study.
Recommended dosage
for men
The recommended daily intake for men is 90 mg per day. However, higher doses of up to 2000 mg per day may be beneficial for men with low sperm counts. Of course, it’s always a good idea to talk to a doctor or nutritionist before taking any supplements.
For women
The recommended daily intake (RDI) for vitamin C for adult women is 75 mg. However, many experts recommend that women take more than the RDI, especially if they are experiencing stress or other health conditions. For example, some experts recommend that women take up to 200 mg of vitamin C per day to help reduce stress levels and improve overall health. If you’re considering taking more than the RDI, it’s best to speak with a doctor or other qualified healthcare provider to make sure it’s safe for you.
The absorption of iron
How long does it take for vitamins C to start having effect in the body system?
The effects of vitamin C can vary from person to person, but it generally takes about two weeks for vitamin C levels in the body to reach their peak after supplementation. During this time, you may start to notice some of the benefits of vitamin C, such as improved immune function, reduced inflammation, and improved energy levels. However, it’s important to keep in mind that the benefits of vitamin C may be cumulative, meaning that the longer you take it, the more benefits you may see.
Do vitamin C supplements have any side effects?
When taken in the recommended dosages, vitamin C is generally considered safe for most people. However, it’s possible to have too much vitamin C, which can cause side effects such as nausea, diarrhea, and abdominal cramps.
In very rare cases, vitamin C can cause kidney stones.
There are also some medications that can interact with vitamin C, such as blood thinners and chemotherapy drugs. It’s always a good idea to speak with a doctor or other qualified healthcare provider before starting any new supplements, including vitamin C.
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References
- Healthline. Vitamin C: benefits, sources, and supplements. Healthline website. Published March 10, 2023. Accessed April 10, 2025. https://www.healthline.com/nutrition/vitamin-c-benefits
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Carr AC, Frei B. Toward a new recommended dietary allowance for vitamin C based on antioxidant and health effects in humans. American Journal of Clinical Nutrition. 1999;69(6):1086-1107. doi:10.1093/ajcn/69.6.1086. https://academic.oup.com/ajcn/article/69/6/1086/4714888
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Agarwal A, Nallella KP, Allamaneni SS, et al. Role of antioxidants in treatment of male infertility: an overview of the literature. Reproductive BioMedicine Online. 2004;8(6):616-627. doi:10.1016/S1472-6483(10)61641-0. https://www.rbmojournal.com/article/S1472-6483(10)61641-0/fulltext
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Greco E, Iacobelli M, Rienzi L, et al. Reduction of the incidence of sperm DNA fragmentation by oral antioxidant treatment. Journal of Andrology. 2005;26(3):349-353. doi:10.2164/jandrol.04146. https://onlinelibrary.wiley.com/doi/10.2164/jandrol.04146
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Akmal M, Qadri JZ, Al-Waili NS, et al. Improvement in human semen quality after oral supplementation of vitamin C. Journal of Medicinal Food. 2006;9(3):440-442. doi:10.1089/jmf.2006.9.440. https://www.liebertpub.com/doi/10.1089/jmf.2006.9.440
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Meldrum DR, Gambone JC, Morris MA, et al. A novel antioxidant formulation improves erectile function in men with erectile dysfunction. The Journal of Sexual Medicine. 2010;7(6):2141-2148. doi:10.1111/j.1743-6109.2010.01794.x. https://www.jsm.jsexmed.org/article/S1743-6095(15)33492-7/fulltext
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Cinar V, Polat Y, Baltaci AK, et al. Effects of vitamin C supplementation on nitric oxide and oxidative stress in athletes. Biological Trace Element Research. 2011;144(1-3):138-146. doi:10.1007/s12011-011-9050-8. https://link.springer.com/article/10.1007/s12011-011-9050-8
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Cleveland Clinic. Nutrients for sexual health: what to eat for better performance. Cleveland Clinic website. Published May 20, 2023. Accessed April 10, 2025. https://health.clevelandclinic.org/sexual-health-nutrients
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Levine M, Rumsey SC, Daruwala R, et al. Criteria and recommendations for vitamin C intake. JAMA. 1999;281(15):1415-1423. doi:10.1001/jama.281.15.1415. https://jamanetwork.com/journals/jama/fullarticle/189939
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Hurrell R, Egli I. Iron bioavailability and dietary reference values. American Journal of Clinical Nutrition. 2010;91(5):1461S-1467S. doi:10.3945/ajcn.2010.28674F. https://academic.oup.com/ajcn/article/91/5/1461S/4597429