Quick Answer: The foods highest in tryptophan include pumpkin seeds (576 mg per 100 g), turkey, chicken, cheddar cheese, eggs, and tofu. Plant and animal sources both contribute significantly. Pairing any of these with complex carbohydrates at dinner improves how much tryptophan reaches your brain for melatonin production.
In This Guide
Reading Time: 6 minutes
Why Tryptophan Foods Matter for Sleep
Tryptophan is an essential amino acid and the only dietary precursor to serotonin and melatonin. Your body cannot make it, so every milligram comes from what you eat. Serotonin stabilises mood during waking hours; melatonin regulates your sleep-wake cycle. Without adequate tryptophan in your daily diet, melatonin production can be compromised.
The good news is that tryptophan is widely distributed across food groups. You do not need exotic supplements or expensive superfoods. A well-planned diet that includes protein at each meal, with an emphasis on higher-tryptophan sources at dinner, gives your body what it needs to support natural sleep onset.
Sleep Science: The Carbohydrate Effect
Tryptophan competes with other large neutral amino acids (LNAAs) to cross the blood-brain barrier. When you eat carbohydrates alongside tryptophan-rich food, insulin is released, which drives competing amino acids into muscle cells. Tryptophan, bound to albumin in the blood, is less affected -- so its relative concentration rises and more enters the brain. A small portion of whole grains, sweet potato, or banana alongside your protein source makes a measurable difference.
Top Animal Sources of Tryptophan
Animal proteins are generally rich in tryptophan because they contain complete proteins with all essential amino acids in high concentrations.
- Turkey (light meat, roasted): 333 mg per 100 g. Famous for its sleep association, though the amount is similar to most poultry.
- Chicken breast (roasted): 294 mg per 100 g. A practical everyday protein source available at any Canadian grocery store.
- Cheddar cheese: 320 mg per 100 g. Also delivers calcium, which supports muscle relaxation and melatonin synthesis.
- Salmon (cooked): 262 mg per 100 g. Combined with omega-3 fatty acids that independently support sleep quality.
- Tuna (canned in water): 280 mg per 100 g. Budget-friendly and convenient.
- Eggs (whole): 167 mg per 100 g. Also contain vitamin D, which plays a role in serotonin synthesis.
- Milk (whole): 43 mg per 100 g. Lower per 100 g but the classic warm milk sleep remedy works partly through tryptophan and partly through ritual.
- Greek yogurt: 46 mg per 100 g. Higher protein than regular yogurt means more tryptophan per serving.
Top Plant Sources of Tryptophan
Plant-based eaters can meet tryptophan needs through a variety of seeds, legumes, and grains.
- Pumpkin seeds (roasted): 576 mg per 100 g. The single richest whole-food plant source of tryptophan.
- Sesame seeds: 388 mg per 100 g. Use tahini or sprinkle on meals for a convenient boost.
- Sunflower seeds: 348 mg per 100 g. A popular Canadian snack food that doubles as a tryptophan source.
- Firm tofu: 128 mg per 100 g. A versatile protein for plant-based diets.
- Edamame: 131 mg per 100 g. Convenient frozen option widely available in Canada.
- Oats (dry): 234 mg per 100 g. Evening oatmeal pairs tryptophan with complex carbohydrates for improved absorption.
- Walnuts: 170 mg per 100 g. Also contain melatonin directly, making them a double-acting sleep food.
- Chickpeas (cooked): 84 mg per 100 g. Add to dinner dishes for a plant-based tryptophan contribution.
Brad, Owner of Mattress Miracle: "We have been helping Brantford families sleep better since 1997. The mattress is only part of the picture. What you eat in the evening, how consistent your bedtime is, and whether your sleep environment is cool and dark all feed into the same result -- or lack of it."
Full Comparison Table
The following table ranks common foods by tryptophan content per 100 g of edible portion.
| Food | Tryptophan (mg/100 g) | Category |
|---|---|---|
| Pumpkin seeds (roasted) | 576 | Plant |
| Sesame seeds | 388 | Plant |
| Sunflower seeds | 348 | Plant |
| Turkey (light meat, roasted) | 333 | Animal |
| Cheddar cheese | 320 | Animal |
| Chicken breast (roasted) | 294 | Animal |
| Tuna (canned) | 280 | Animal |
| Salmon (cooked) | 262 | Animal |
| Oats (dry) | 234 | Plant |
| Walnuts | 170 | Plant |
| Eggs (whole) | 167 | Animal |
| Edamame | 131 | Plant |
| Firm tofu | 128 | Plant |
| Chickpeas (cooked) | 84 | Plant |
| Greek yogurt | 46 | Animal |
| Whole milk | 43 | Animal |
| Banana | 10 | Plant |
How to Eat for Maximum Absorption
Knowing which foods are high in tryptophan is only part of the equation. Absorption and brain uptake depend heavily on meal composition.
Pair protein with carbohydrates at dinner. As described in the sleep science box above, insulin from carbohydrate digestion clears competing amino acids, letting more tryptophan reach the brain. A chicken breast with sweet potato is more effective than chicken alone.
Avoid very large protein servings at dinner. A large steak floods the bloodstream with all amino acids, including competitors. A moderate portion of 100--150 g protein is enough to supply tryptophan without overwhelming the transport system.
Eat dinner two to three hours before bedtime. This gives digestion time to progress so tryptophan conversion to melatonin aligns with your natural sleep window. Eating immediately before bed can cause reflux and disrupted sleep, counteracting the benefits.
Evening Snack Tip
If you tend to sleep better with a light snack before bed, try a small bowl of oatmeal with a handful of walnuts, or a few whole grain crackers with a slice of cheddar. Both combine tryptophan with carbohydrates and are easy on digestion at night.
Canadian Meal Ideas
Here are practical dinner ideas available with everyday Canadian grocery staples:
- Baked salmon with brown rice and roasted broccoli: Omega-3s plus tryptophan plus complex carbs.
- Turkey and cheese wrap on whole wheat: Classic convenience, rich in tryptophan from two sources.
- Tofu stir-fry with edamame over quinoa: Fully plant-based, high tryptophan, good carbohydrate content.
- Oatmeal with walnuts and a side of Greek yogurt: A lighter evening option for those who prefer not to eat heavy at night.
- Chicken and sweet potato soup: Warming, easy to digest, excellent tryptophan and carbohydrate pairing.
A Note for Brantford Residents
With dark winters and long commutes for many Grand Valley area residents, sleep quality often suffers seasonally. Small dietary adjustments -- adding pumpkin seeds to salads, including salmon once or twice a week -- can support serotonin production year-round and make a noticeable difference in how you feel and sleep through the colder months.
Shop: Adjustable Beds at Mattress Miracle
Find Your Perfect Mattress at Mattress Miracle
We are a family-owned mattress store in Brantford, helping our community sleep better since 1997. Come try mattresses in person and get honest, no-pressure advice.
441 1/2 West Street, Brantford, Ontario
Call 519-770-0001Frequently Asked Questions
Is turkey actually the best source of tryptophan?
No. Turkey is a good source (333 mg per 100 g) but is not exceptional. Pumpkin seeds, sesame seeds, and sunflower seeds all contain more tryptophan per 100 g. Turkey's reputation comes largely from its association with large Thanksgiving meals, where high carbohydrate intake helps tryptophan reach the brain.
Can vegans get enough tryptophan?
Yes. Pumpkin seeds, sesame seeds, sunflower seeds, oats, tofu, edamame, and walnuts are all excellent plant-based sources. A varied plant-based diet easily meets tryptophan requirements without supplementation.
Should I take a tryptophan supplement instead of eating these foods?
Food sources of tryptophan are safer and come with additional beneficial nutrients. Supplements should only be considered under medical guidance, as high-dose supplementation carries potential risks, particularly for people taking antidepressants.
Does cooking destroy tryptophan?
Tryptophan is heat-stable and survives most cooking methods. Boiling, roasting, and steaming all preserve the majority of tryptophan content. Protein denaturation during cooking does not significantly reduce tryptophan availability.
Sources
- USDA FoodData Central. Amino acid data for individual foods. U.S. Department of Agriculture, 2024.
- Fernstrom JD. "Large neutral amino acids: dietary effects on brain neurochemistry and function." Amino Acids, 2013.
- Wurtman RJ, Wurtman JJ. "Brain serotonin, carbohydrate-craving, obesity and depression." Obesity Research, 1995.
- Markus CR, et al. "The bovine protein alpha-lactalbumin increases the plasma ratio of tryptophan to the other large neutral amino acids." American Journal of Clinical Nutrition, 2000.
- Health Canada. Dietary Reference Intakes -- Protein and Amino Acids. Government of Canada, 2006.
Visit Our Brantford Showroom
We are located at 441½ West Street in downtown Brantford. Free parking available. Our team does not work on commission, so you get honest advice based on your needs.
Mattress Miracle -- 441½ West Street, Brantford, ON -- (519) 770-0001
Hours: Monday--Wednesday 10am--6pm, Thursday--Friday 10am--7pm, Saturday 10am--5pm, Sunday 12pm--4pm.
Optimising your diet for sleep is a great step -- but a mattress that fits your body and sleeping position is just as important. Come in and speak with our team about finding the right support for a genuinely restful night.
Shop This Topic at Mattress Miracle
Popular picks at Mattress Miracle:
Or see all our mattresses in our Brantford showroom.
Related Reading
- What Is Tryptophan? The Amino Acid Behind Sleep
- Complete Guide to Foods With Tryptophan
- The Sleep Chemical in Turkey Explained
- Best Foods as Natural Sleep Aids
- Bananas and Sleep: What the Science Says
- The Futon Shop Alternatives in Brantford: Better Sleep Investment
- Sleep Mask Benefits: The Science Behind Eye Covering and Better Sleep
- Sleep Setup for Overnight Caregivers: Practical Tips for Better Rest