If you have diabetes, the best nighttime drinks are generally those that do not cause large blood sugar spikes, support hydration, and fit within your overall meal plan. Individual needs vary, especially if you take insulin or medications that can cause overnight low blood sugar, so it’s important to follow your healthcare provider’s advice.
1. Plain Water
Why it’s beneficial
- Contains no carbohydrates, calories, or sugar.
- Helps prevent dehydration, which can worsen blood glucose control.
- Supports kidney function and overall health.
Best way to drink it
- A glass of water 1–2 hours before bed is usually sufficient.
- Avoid excessive amounts immediately before sleep if nighttime bathroom trips are a problem.
2. Unsweetened Herbal Tea
Examples include:
- Chamomile tea
- Peppermint tea
- Ginger tea
- Hibiscus tea
Why it’s beneficial
- Typically contains no sugar and very few calories.
- Can promote relaxation and improve sleep quality.
- Better sleep is associated with improved glucose regulation.
Tips
- Drink it without honey, sugar, or syrups.
- Check labels to ensure it’s truly unsweetened.
3. Cinnamon Tea
Why it’s beneficial
- Cinnamon has been studied for potential effects on insulin sensitivity and blood sugar control.
- Provides flavor without adding carbohydrates.
How to prepare
- Steep a cinnamon stick in hot water for 10–15 minutes.
- Alternatively, use a caffeine-free cinnamon herbal tea.
Note
- Cinnamon is not a treatment for diabetes, but it can be a flavorful low-sugar beverage.
4. Unsweetened Almond Milk
Why it’s beneficial
- Usually low in carbohydrates compared with regular milk.
- Provides a creamy texture and can be satisfying before bed.
- Often fortified with calcium and vitamin D.
What to look for
- Choose “unsweetened” varieties.
- Read nutrition labels, as carbohydrate content varies by brand.
Serving
- About 1 cup (240 mL) is a common portion.
5. Low-Fat Milk (If It Fits Your Meal Plan)
Why it’s beneficial
- Provides protein, calcium, and other nutrients.
- Protein may help with satiety overnight.
Things to consider
- Milk contains natural carbohydrates (lactose), so it can affect blood glucose.
- Monitor how your body responds.
Best option
- Plain, unsweetened milk rather than flavored varieties.
6. Decaffeinated Green Tea
Why it’s beneficial
- Rich in antioxidants.
- Very low in calories.
- Decaffeinated versions reduce the risk of sleep disruption.
Tips
- Choose decaf if you’re sensitive to caffeine.
- Avoid sweeteners that add sugar.
7. Tomato Juice (Unsalted and No Added Sugar)
Why it’s beneficial
- Lower in sugar than many fruit juices.
- Contains vitamins, minerals, and antioxidants.
Important
- Select varieties with no added sugar.
- Keep portions moderate (around ½–1 cup).
Avoid
- Sweetened vegetable juice cocktails.
Drinks Diabetics Should Usually Avoid at Night
- Regular soda
- Sweet tea
- Fruit punch
- Energy drinks
- Sweetened coffee beverages
- Large amounts of fruit juice
- Milkshakes
- Alcoholic drinks, especially on an empty stomach
These beverages can raise blood glucose levels or interfere with sleep and overnight blood sugar management.
A Note About Bedtime Snacks and Drinks
Some people with diabetes—particularly those taking insulin or certain diabetes medications—may experience overnight hypoglycemia (low blood sugar). In such cases, a healthcare professional may recommend a bedtime snack that includes protein and a controlled amount of carbohydrates. The ideal choice depends on:
- Your medication regimen
- Your blood glucose patterns
- Your activity level
- Your overall nutrition plan
Bottom Line
The seven best nighttime drinks for most people with diabetes are:
- Water
- Unsweetened herbal tea
- Cinnamon tea
- Unsweetened almond milk
- Low-fat milk (if appropriate for your meal plan)
- Decaffeinated green tea
- Unsweetened tomato juice
Water and unsweetened herbal teas are generally the safest choices because they hydrate without raising blood sugar. If you’re trying to optimize nighttime glucose control, monitoring your blood sugar response to different beverages can help identify what works best for you.