Natural Factors L-Tryptophan 220 mg (90 VCaps)

Natural Factors L-Tryptophan 220 mg gives you 220 mg of L-tryptophan in one vegetarian capsule a day. Source of an essential amino acid for the maintenance of good health. The bottle holds 90 capsules, a three-month supply.

What L-Tryptophan 220 mg is licensed for

It is licensed for sale by Health Canada and bears NPN 80119341. The licence also lists:

• Source of an essential amino acid involved in muscle protein synthesis.
• Assists in the building of lean muscle tissue when combined with regular weight training and a healthy balanced diet.
• Athletic support.
• Workout supplement.

What L-tryptophan is

Tryptophan is one of the nine essential amino acids. Essential means the body cannot make it, so it has to come from food or a supplement. It is the largest of the amino acids found in protein, with a double-ring side chain called an indole.

Turkey is the food most people link to tryptophan, but chicken, eggs, cheese, milk, oats, soy, pumpkin seeds and fish contain it too. Any food with protein supplies some.

The L in the name marks the natural form of the molecule. Each capsule holds 220 mg of L-tryptophan as its only medicinal ingredient. The non-medicinal ingredients are carbohydrate gum, cellulose, dicalcium phosphate dihydrate, magnesium stearate, silica, stearic acid and water. The bottle front describes it as a free form amino acid, meaning a single amino acid on its own and not part of a protein.

How it compares

Vitasave also carries New Roots L-Tryptophan 220 mg in a 90-capsule bottle and NOW L-Tryptophan 220 mg in a 60-capsule bottle, both at the same strength as this one, plus Life Choice L-Tryptophan in a 60-capsule bottle. Next to those, this Natural Factors bottle gives you the larger count of 90 capsules at 220 mg each.

How to take it

Adults 18 and over take 1 capsule a day. Ask a health care practitioner before use if you are pregnant or breastfeeding. The label also says: "Ask a health care practitioner before use if you are taking antidepressants." Keep the bottle out of the reach of children. The full directions and cautions are under How to Take.

Who it suits

Adults who want a single essential amino acid in a once-a-day capsule, including people who train and track their amino acid intake. One bottle covers about three months.

Natural Factors L-Tryptophan 220 mg FAQ

How much L-tryptophan is in each capsule?

220 mg.

How long does one bottle last?

90 days at the label dose of 1 capsule a day.

Is tryptophan an essential amino acid?

Yes. The body cannot make it, so it has to come from food or a supplement.

Is it licensed in Canada?

Yes. It bears NPN 80119341 and is licensed for sale by Health Canada.

Shop more Natural Factors supplements or the full L-tryptophan range. Orders over $99 ship free in Canada.