Many people mistakenly believe that height can only be improved before puberty. In reality, if you know how to care for your body and supplement proper nutrition, adults can still improve their height. This article will help you discover the best height increase supplements for adults and explain why Canxi Hito is a standout choice after age 18.
1. Can you still grow taller after 18?
The answer is yes, but it depends on many factors such as genetics, lifestyle, nutrition, and the condition of your growth plates. Although growth plates begin to close after age 18, if they have not completely fused, you may still have a chance to gain additional height.
Therefore, the key to improving height in adults is ensuring adequate intake of essential micronutrients needed for bone formation, cartilage regeneration, and the natural stimulation of growth hormone.

2. Essential nutrient groups that help increase height for adults
Below are 6 key nutrient groups that play a major role in supporting height growth after age 18:
2.1. Calcium – Essential mineral for bone structure
Calcium makes up as much as 99% of bone structure. Adequate calcium intake helps bones grow strong, reduces the risk of early osteoporosis, and maintains stable height in adults.
2.2. Vitamin D3 – Helps optimize calcium absorption
Vitamin D3 acts as a transporter, helping the body absorb calcium from the small intestine into the bloodstream. Without D3, no matter how much calcium you consume, much of it will be excreted.
2.3. Vitamin K2 (MK7) – Directs calcium into bones
MK7 is an active compound that helps move calcium from the blood to where it is needed most—the bones—and prevents buildup in soft tissues such as blood vessels, the heart, and kidneys.
2.4. Collagen Type II – Builds cartilage cushioning and regenerates joints
Collagen Type II accounts for up to 50% of cartilage structure. Supplementing this collagen helps improve elasticity, supports growth plate cartilage, and reduces aches from frequent movement.
2.5. Magnesium, Zinc, Phosphorus – Trace minerals that stimulate bone growth
These three minerals not only increase bone density but also help bone cells develop sustainably.
2.6. Arginine and Lysine – Amino acids that stimulate growth hormone
These are two special amino acids that can encourage the pituitary gland to produce growth hormone (GH), one of the key factors in height improvement.
3. Criteria for choosing the best height increase supplements for adults
If you are looking for the best height increase supplements for adults, do not overlook these criteria:
- Complete formula: Should contain nutrients such as nano calcium, Vitamin D3, MK7, Collagen Type II, Zinc, Magnesium…
- Fast absorption form: Prioritize effervescent tablets, granules, powders, or chewable tablets, as they are absorbed faster than standard tablets.
- Safe and suitable for adults: Should not cause weight gain, internal heatiness, or digestive issues.
- Clear brand reputation: Certified, tested for safety, or manufactured under international standards such as GMP or ISO.
4. Top 5 best supplements to increase height after age 18
Below are products that many people highly rate for improving height after reaching adulthood:

4.1. Canxi Hito – A complete height improvement solution for adults
Canxi Hito is a supplement currently recommended by many nutrition experts in Vietnam for people over 18 years old.
Outstanding benefits:
- Contains nano calcium: Easier to absorb than regular calcium, without causing constipation or kidney residue.
- Includes Vitamin D3 and MK7: Enhances calcium delivery into bones and prevents improper buildup.
- Contains hydrolyzed Collagen Type II: Supports cartilage regeneration and reduces knee fatigue during exercise.
- Added Zinc, Magnesium, DHA: Provides nutrients for the brain, bones, joints, and overall flexibility.
- Does not cause weight gain: Suitable for gym-goers and those managing body weight.
Recommended for:
- Adults aged 18–35 who want to improve height
- Adults seeking better bone and joint health
- People who exercise regularly or play sports
4.2. GH Creation
A supplement designed to support growth hormone production, containing Arginine, Lysine, and Ornithine. However, it should be taken in proper dosage and over a long-term plan.
4.3. NuBest Tall
Tablet form supplement containing calcium, hydrolyzed collagen, and essential vitamins. Suitable for people aged 20–30.
4.4. Doctor Plus Height
Contains nano calcium and collagen. However, the price is relatively high, and long-term use is needed for noticeable results.
4.5. BoniHi height increase tablets
Herbal-based formula that helps provide nutrients and support growth hormone production, though results may vary depending on the individual.
5. How to use height increase supplements most effectively after 18
To maximize results, adults using height increase supplements should:
- Use consistently: Take daily at a fixed time, without interruption.
- Combine with exercise: Practice yoga, pull-ups, swimming, or stretching at least 3–4 times per week.
- Get enough sleep: Growth hormone is released most strongly between 10 PM and 2 AM.
- Limit growth inhibitors: Coffee, alcohol, sugary foods, and fast food.
- Drink enough water: Helps metabolize nutrients more effectively.
6. Common mistakes that make it harder for adults to grow taller
Even when using the right supplement, height improvement can still be difficult if you make these mistakes:
- Taking calcium alone without Vitamin D3 or MK7
- Overusing supplements while neglecting a balanced diet
- Sleeping late, exercising too little, or sitting with poor posture
- Choosing products with unclear origins or unsuitable formulas

7. Expert advice
According to nutrition experts, after age 18, height growth slows down but does not completely stop. Combining a proper diet, healthy lifestyle habits, and choosing the right supplements is an important foundation if you want to “gain a few more centimeters” in adulthood.
Among products on the market, Canxi Hito is considered an effective and safe option. In addition to providing essential nutrients, it is formulated in granule form for easier absorption and is suitable for many body types.
8. Habits that naturally support height growth for adults
Besides taking supplements, building healthy daily habits can also help improve height more effectively:
8.1. Get enough sleep and sleep on time
Growth hormone (GH) is released the most between 10 PM and 2 AM. Therefore, you should go to bed before 11 PM and sleep deeply for 7–8 hours each night so the body has enough time to recover and stimulate bone development.
8.2. Maintain proper posture
Incorrect standing, sitting, or lying posture can curve the spine and make you appear noticeably shorter. Keep your back straight, head up, and shoulders open. When working or studying, adjust your chair and desk to avoid slouching for long periods.
8.3. Exercise regularly
Sports such as swimming, pull-ups, jump rope, basketball, and stretching help elongate the body and stimulate growth hormone release. Exercising at least 30 minutes a day is an important factor in improving physique.
8.4. Eat a balanced diet
Besides supplements, you need a healthy diet with enough protein, calcium, green vegetables, fruits, healthy fats, and B vitamins to help the body absorb nutrients efficiently.
9. How many centimeters can adults still gain?
Many studies and user feedback suggest that when applying the right methods—including using the best height increase supplements for adults such as Canxi Hito—combined with exercise and proper sleep, adults may still improve height by 2–5 cm within 6–12 months. Of course, results do not happen instantly and vary from person to person, but with consistent long-term effort, the chance of becoming taller is entirely possible.