Health Guide
Drug Guide


What is it?

Larch is an herbal medicine used to stimulate the immune system. It is also used as a dietary fiber source.

Other names for Larch include: Arabinogalactan, Larix, and Wood gum.

Ask your doctor, nurse, or pharmacist if you need more information about this medicine or if any information in this leaflet concerns you.

Before Using:

Tell your doctor if you


Talk with your caregiver about how much Larch you should take. The amount depends on the strength of the medicine and the reason you are taking Larch. If you are using this medicine without instructions from your caregiver, follow the directions on the medicine bottle. Do not take more medicine or take it more often than the directions tell you to.

To store this medicine:

Keep all medicine locked up and away from children. Store medicine away from heat and direct light. Do not store your medicine in the bathroom, near the kitchen sink, or in other damp places. Heat or moisture may cause the medicine to break down and not work the way it should work. Throw away medicine that is out of date or that you do not need. Never share your medicine with others.


Side Effects:

Stop taking your medicine right away and talk to your doctor if you have any of the following side effects. Your medicine may be causing these symptoms which may mean you are allergic to it.

Other Side Effects:

This medicine may also cause other side effects. Tell your doctor if you have side effects that you think are caused by this medicine.


1. Causey JL, Robinson RR, Feirtag JM et al: Effects of larch arabinogalactan on human peripheral blood mononuclear cells: results from in vivo and in vitro human trials. FASEB Journal 1999; 13(4 PART 1):A589.

2. Vince AJ, McNeil NI, Wager JD et al: The effect of lactulose, pectin, arabinogalactan, and cellulose on the production of organic acids and metabolism of ammonia by intestinal bacteria in a faecal incubation system. Br J Nutr 1990; 63:17-26.

Last Updated: 9/15/2016

Thomson Micromedex. All rights reserved.

Thomson & A.D.A.M