The short version
4 companies supply this market — a reasonable cushion if one runs into trouble.
Market view
l-tryptophan · Powder
4 marketed package NDCs · 4 active manufacturers
Most dispensed: TRYPTOPHAN 1 kg/kg · Powder · #25 kg/drum
Common questions
- Is L-tryptophan in shortage right now?
- No. FDA does not currently list L-tryptophan in shortage. This page is rebuilt every morning from FDA's shortage database, so a new posting appears here the day it is published.
- Who makes L-tryptophan?
- 6 companies have marketed L-tryptophan in the last 30 days, according to the FDA NDC Directory. Every manufacturer and package is listed on this page.
All marketed products
Expand a strength to see its dosage forms, then package sizes, then each manufacturer and NDC. Click an NDC for its full detail page.