Oranges are a nutrient-rich fruit, especially known for their high content of vitamin C and vitamin B9 (folic acid). As a result, orange juice becomes an immune-boosting “bodyguard,” helping to slow down the aging process and supporting the prevention of cardiovascular and high cholesterol issues. However, there are times when drinking orange juice can do more harm than good. There are three critical timings when you should absolutely avoid drinking orange juice for the sake of your health.
1. Avoid drinking orange juice before bedtime
While you may think that a glass of orange juice before sleep helps with relaxation and nutrient intake, it is actually not a good time to drink it. Drinking orange juice at this time can lead to:
Disturbed sleep: Orange juice contains high levels of potassium, which has a diuretic effect. This may cause you to wake up multiple times during the night to urinate, disrupting your sleep quality.
Increased risk of insomnia and fatigue: Orange juice provides energy, but at night, your body needs rest. Drinking it before bed can disrupt your body’s natural balance and lead to fatigue and insomnia.
Dental enamel erosion: Drinking orange juice before sleeping can lead to enamel erosion if you don’t brush your teeth afterward. The acidic nature of the juice can linger in your mouth, potentially damaging your teeth.
Increased risk of kidney stones: Research suggests that drinking orange juice in the evening may not be advisable for those at risk of kidney stones or undergoing treatment for kidney-related issues.

2. Do not drink orange juice immediately after meals
Especially after protein-rich or seafood-heavy meals, it is best to avoid drinking orange juice right away. Here’s why:
Indigestion and bloating: The acid in orange juice can react with food in your stomach, causing discomfort and indigestion.
Inhibited digestion: Vitamin C, when combined with seafood protein, can lead to precipitation and digestive disorders, resulting in a bloated and uncomfortable feeling.
It is recommended to wait for at least 1-2 hours after a meal to drink orange juice. This allows for better absorption of vitamins without interfering with digestion.
3. Avoid drinking orange juice on an empty stomach
Oranges are highly acidic. Drinking orange juice when your stomach is empty can lead to a sudden increase in stomach acid, causing issues such as:
- Stomach pain and heartburn
- Aggravating stomach and duodenal ulcers
- Uncomfortable, growling stomach
Therefore, it is advisable to have a light snack before drinking orange juice to avoid any negative impact on your digestive system.
Tips for drinking orange juice in a healthy way
To maximize the benefits of orange juice, consider the following guidelines:
Morning consumption: Drinking orange juice in the morning is ideal for boosting energy levels and strengthening your immune system.
Wait 1-2 hours after a meal: This ensures better vitamin absorption without hindering digestion.
Appropriate intake: Adults should consume around 200ml per serving, while children should limit their intake to 100ml per day. Overconsumption may impact the stomach and kidneys negatively.
Drink immediately after juicing: Freshly squeezed orange juice should be consumed immediately to retain its vitamin C content. Vitamin C oxidizes quickly, so drinking it right away ensures maximum nutritional value.
Do not mix with milk: Mixing orange juice with milk can cause milk protein to curdle, leading to digestion issues.
Considerations when buying and consuming oranges
- Choose fresh, juicy oranges with thin skin: High-quality oranges usually have a shiny, taut skin and feel heavy for their size.
- Avoid long-stored oranges: If the segments look dry but the skin still appears fresh, the orange may have been treated with chemicals.
- Minimize added sugar: Oranges are naturally sweet, so avoid adding extra sugar to your juice to prevent a calorie overload and potential health issues.
- Avoid drinking orange juice while taking medication: Some drugs, like antibiotics and hypertension treatments, may be affected by the juice, reducing their effectiveness or causing side effects.
- Individuals with stomach or pancreatic issues should exercise caution: The acid and organic compounds in orange juice can exacerbate inflammation and ulcers.
The Ultimate Vitamin C Boost: Discover the Vietnamese Fruit that’s 40 Times Richer than Oranges and Taking Europe by Storm
“The humble gac fruit, a familiar sight in Vietnam, has been making waves in the health industry. This unassuming fruit contains a whopping 40 times more vitamin C than oranges, a fact that has not gone unnoticed by experts. With its impressive nutritional profile, gac has earned the title of a “superfood” and is now making its way into international markets, captivating even the most discerning of consumers in Asia and Europe. “