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L-tryptophan (Tryptan) Uses, Side Effects & Dosage

What is tryptophan capsule, tablet, and how does it work (mechanism of action)?

L-tryptophan is an herbal supplement used for
depression. Chemically it is a natural occurring amino acid obtained from plants
and animals. L-tryptophan is an "essential" amino acid because humans cannot
make it and must obtain L-tryptophan from food. It is converted in the body to
serotonin. People with depression have an imbalance of serotonin and other brain
chemicals. Increased serotonin levels in the brain improve symptoms of

What brand names are available for tryptophan capsule, tablet?

Tryptophan, Tryptan

Is tryptophan capsule, tablet available as a generic drug?


Do I need a prescription for tryptophan capsule, tablet?


What are the side effects of tryptophan capsule, tablet?

Side effects of L-tryptophan are:

What is the dosage for tryptophan capsule, tablet?

  • Adults: Take 8 to 12 grams of L-tryptophan by mouth per day. L-tryptophan
    should be taken in divided doses of three or four times a day.
  • Pediatric: Safe and effective use in pediatric patients is not determined.

Which drugs or supplements interact with tryptophan capsule, tablet?

L-tryptophan should be used with caution with other
anti-depressants like
(Pristiq), vilazodone, linezolid, and
phenelzine because of increased risk of a serious condition called serotonin
syndrome caused by excessive serotonin in the brain.

Is tryptophan capsule, tablet safe to take if I’m pregnant or breastfeeding?

There are no adequate studies done on L-tryptophan to determine
safe and effective use in
pregnant women.

It is not known whether L-tryptophan enters breast milk;
however, it is best to avoid L-tryptophan during
breastfeeding to avoid risk to
the newborn.

What else should I know about tryptophan capsule, tablet?

What preparations of tryptophan capsule, tablet are available?

L-tryptophan is available in 500 mg and 1000 mg tablets and

How should I keep tryptophan capsule, tablet stored?

L-tryptophan is stored in tightly closed containers. Due to multiple
companies producing this medication, storage requirement may vary based on


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