HomeHEALTHShould You Avoid Taking Vitamin C at Night?

Should You Avoid Taking Vitamin C at Night?

Did you know that the timing of your vitamin C intake could be just as important as the amount you take? While Vitamin C is celebrated for its numerous health benefits, its role in nighttime routines is often misunderstood. Taking Vitamin C at night, in normal dosages, might not only be harmless but could actually be beneficial for your sleep.

In this blog, we demystify the relationship between Vitamin C and sleep quality. We shed light on why a regular dose of Vitamin C at night could enhance your quest for restful sleep, and provide guidance on how to smartly incorporate this essential nutrient into your evening regimen. Join us as we explore the surprising benefits and unveil the best practices for Vitamin C intake before bedtime.

1. Overview of Vitamin C

Vitamin C, often called the ‘super-vitamin,’ is an indispensable nutrient that powers your body’s defenses, fuels your vitality, and enhances your overall well-being.

1.1 The Role of Vitamin C in the Body

Vitamin C acts as a potent antioxidant, safeguarding our cells from the harmful effects of free radicals. This nutrient bolsters our immune system and is instrumental in producing collagen. Collagen is crucial for maintaining the health and resilience of our skin, bones, and blood vessels.

Role of Vitamin C in the Body
Role of Vitamin C in the Body

1.2 Signs That Indicate You Need Vitamin C Supplements

In most developed countries, including the U.S., a deficiency in Vitamin C is uncommon. However, there are certain symptoms to be aware of that may suggest a need for Vitamin C supplementation. These include feelings of fatigue, muscle weakness, pain in the joints and muscles, and bleeding gums. If you notice any of these signs, it could be an indication that your body requires more Vitamin C.

Signs That Indicate You Need Vitamin C Supplements
Signs That Indicate You Need Vitamin C Supplements

1.3 Recommended Dosage of Vitamin C

For optimal health, women are advised to consume 75 milligrams (mg) of Vitamin C daily, while men should aim for 90 mg. During pregnancy, the recommended intake increases to 120 mg daily.

It’s important to know that the maximum safe limit for Vitamin C intake is 2,000 mg per day. A daily dosage of 500 mg is generally considered safe. While supplements can be beneficial, it’s always preferable to obtain your nutrients from a healthy diet, particularly from fruits and vegetables that are rich in Vitamin C.

Recommended Dosage of Vitamin C
Recommended Dosage of Vitamin C

Vitamin C content of popular foods

2. Vitamin C and Sleep

Vitamin C might affect your sleep more than you thought:

2.1 Does Vitamin C Really Cause Insomnia?

Vitamin C is renowned for its health benefits, but there’s a lingering concern about its potential link to insomnia. The belief that vitamin C disrupts sleep originated from a cautionary note included on supplement packaging dating back to 1934. This note, first introduced by Roche laboratory on their vitamin C products, warned users about potential mild stimulation effects, particularly when taken late in the day. This advisory stemmed from the understanding that ascorbic acid plays a role in dopamine synthesis, a neurotransmitter linked to brain arousal and stimulation. However, this caution has largely gone unchallenged over the years.

Upon closer examination, it’s evident that only exceedingly high doses of vitamin C might marginally amplify dopamine’s stimulating effects, yet these doses do not significantly disturb sleep patterns. Regular consumption of vitamin C, within the limits recommended by health authorities like ANSES, does not negatively impact sleep quality.

Supporting this, various American studies investigating the influence of vitamin C on sleep cycles have found no concrete evidence to suggest a direct correlation between ascorbic acid intake and difficulties in falling asleep. MRI scans comparing brain activity in individuals with and without pre-sleep ascorbic acid consumption revealed no significant differences, further debunking the myth of vitamin C as a sleep disruptor.

2.2 How the Mechanism of Vitamin C Can Affect Sleep

However, according to multiple studies, it turns out that Vitamin C, while not a direct sleep aid, influences sleep quality through various mechanisms. Here’s how it works:

  • Stress and Anxiety Reduction: As an antioxidant, vitamin C combats oxidative stress from environmental, emotional, and anxiety factors. Lower stress levels can lead to improved sleep quality.
  • Neurotransmitter Production: Vitamin C assists in synthesizing neurotransmitters like serotonin and norepinephrine, which regulate mood and sleep patterns. Adequate levels of vitamin C help maintain these neurotransmitters’ balance, enhancing sleep quality.
  • Immune Function: A robust immune system, supported by vitamin C, can ward off infections and health issues that might interrupt sleep.
  • Iron Absorption: Vitamin C is crucial for iron absorption, impacting hemoglobin production and oxygen transport. Proper iron levels can enhance sleep quality by preventing anemia-related sleep disturbances.
  • Melatonin Production: There’s a potential link between vitamin C and melatonin, the hormone regulating sleep-wake cycles. While the relationship is not fully understood, adequate vitamin C levels support overall health, which may aid melatonin production. 
How the Mechanism of Vitamin C Can Affect Sleep
How the Mechanism of Vitamin C Can Affect Sleep

2.3 Studies on the Impact of Vitamin C on Sleep

Recent studies have shed light on vitamin C’s role in sleep:

  • Improved Sleep Quality: A 2018 study in the Journal of Sleep Research reported enhanced sleep quality in adults taking vitamin C supplements (500 mg daily for 12 weeks).
  • Reduced Sleep Latency: A 2017 study in Nutrients found a decrease in the time to fall asleep among adults taking 1000 mg of vitamin C daily for two weeks.
  • Increased Sleep Duration: A 2019 Sleep journal study showed extended sleep duration in adults with sleep disorders taking 500 mg of vitamin C daily for 12 weeks.
  • Benefits for Children: A 2019 Sleep Health study observed improved sleep quality in children with sleep disorders taking 500 mg of vitamin C daily for 12 weeks
  • Potential for Treating Sleep Disorders: A 2018 Sleep Medicine review suggested vitamin C’s efficacy in regulating sleep patterns and enhancing sleep quality.
  • Reduced Sleep Disturbances: A 2017 Nutrients study noted fewer sleep disturbances among healthy adults taking 1000 mg of vitamin C daily for two weeks.
  • Improved Daytime Functioning: A 2019 Sleep journal study highlighted better daytime functioning, including reduced fatigue and enhanced cognitive function, in adults taking 500 mg of vitamin C daily for 12 weeks.

 These studies, while promising, are preliminary, and further research is needed. It’s crucial to consult a healthcare professional before starting any supplement regimen.

3. Benefits and Side Effects of Taking Vitamin C at Night

So, what if you take Vitamin C at night, do the benefits outnumber the side effects? Let’s find out!

Benefits and Side Effects of Taking Vitamin C at Night
Benefits and Side Effects of Taking Vitamin C at Night

3.1 Benefits of Taking Vitamin C at Night

Research indicates a correlation between high levels of vitamin C and improved sleep quality. People with higher vitamin C concentrations in their blood tend to experience fewer sleep disturbances. In older adults, vitamin C can enhance sleep duration and alleviate conditions like restless leg syndrome. Furthermore, vitamin C has been recognized for its positive impact on sleep quality and fatigue reduction. It also plays a role in improving endothelial function and managing HIF-1α expression and reactive oxygen species.

3.2 Possible Side Effects of Taking Vitamin C at Night

Consuming excessive amounts of vitamin C, especially at night, can lead to several side effects including insomnia, nausea, heartburn, and stomach cramps. Due to its stimulating properties, high doses of vitamin C can induce euphoria and adversely affect sleep patterns, leading to insomnia or restless sleep.

To prevent such issues, it is advisable to distribute vitamin C intake over 3-4 servings throughout the day rather than consuming a large amount at once and avoid taking up to 2000mg a day. Additionally, vitamin C is most effectively absorbed when taken after meals, as opposed to before, when a significant portion may be lost and not fully utilized by the body.

4. Guide to Using Vitamin C Safely and Effectively

Now, let’s explore how to use Vitamin C safely and effectively:

Guide to Using Vitamin C Safely and Effectively
Guide to Using Vitamin C Safely and Effectively

4.1 The Best Time of Day to Take Vitamin C

Vitamin C, being a water-soluble vitamin, doesn’t directly impact your energy levels in terms of causing drowsiness or stimulation. This flexibility means you can integrate vitamin C into your daily routine at a time that suits you best.

However, research suggests that vitamin C has a role in enhancing stress tolerance and regulating cortisol, a hormone linked to sleep. As a result, taking vitamin C in the evening might be advantageous for those who face sleep-related issues.

4.2 How to Choose the Right Vitamin C Supplement

Selecting the appropriate vitamin C supplement involves several considerations: the type of vitamin C, dosage, form, overall quality, and other included ingredients.

Vitamin C comes in various forms, such as ascorbic acid, sodium ascorbate, calcium ascorbate, and liposomal vitamin C, each with specific advantages and limitations. It’s crucial to identify the form that aligns with your health requirements.

Moreover, assess the supplement’s dosage, ensure its quality and value for money. Opt for a trusted brand known for using high-grade ingredients and conducting purity tests. Also, examine any extra components like bioflavonoids or additional antioxidants that might be present in the supplement.

Note: While choosing a vitamin C supplement, it’s also advisable to consider any dietary restrictions or allergies you might have. For instance, some forms of vitamin C might be more suitable for those with sensitive stomachs. Always consult with a healthcare professional before starting any new supplement, especially if you have underlying health conditions or are taking other medications.

5. Conclusion

In conclusion, while Vitamin C is an essential nutrient with numerous health benefits, it’s crucial to be mindful of when you consume it. Based on the insights shared, it’s evident that to avoid potential sleep disturbances, one should consider avoiding taking high dosage of Vitamin C at night.

Each individual’s response to supplements can vary, so we encourage you to share your own experiences and feedback on how Vitamin C affects your sleep patterns. For more insightful and informative content on health and wellness, don’t forget to explore our other blogs at Biosculpture. We’re here to guide you on your journey to optimal health, understanding that every step counts.

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Ruth Clifford
Ruth Cliffordhttps://biosculpture.ie/
Professor Ruth Clifford, a Consultant Haematologist at UHL since November 2016, stands at the forefront of malignant haematology, specializing in the treatment of lymphoid malignancies, including chronic lymphocytic leukaemia (CLL).
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