Forget-me-not is an herb. The whole plant is used to make medicine.

Despite safety concerns, people take forget-me-not for lung problems and nosebleeds.
Forget-me-not might be UNSAFE. It belongs to a plant family that contains hepatotoxic pyrrolizidine alkaloids, chemicals that can cause severe liver damage and cancer.

Special Precautions & Warnings:

Pregnancy and breast-feeding: It’s UNSAFE for anyone, including pregnant and breast-feeding women, to use forget-me-not because it might contain chemicals that can cause severe liver damage and cancer.


NatMed Pro rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, Ineffective, and Insufficient Evidence to Rate.
Likely effective Effectiveness definitions
Possibly effective Effectiveness definitions
Likely ineffective Effectiveness definitions
Possibly ineffective Effectiveness definitions
Insufficient evidence Effectiveness definitions
  • Lung problems.
  • Nosebleeds.
  • Other conditions.
More evidence is needed to rate the effectiveness of forget-me-not for these uses.

Dosing & administration

The appropriate dose of forget-me-not depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for forget-me-not. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.

Interactions with pharmaceuticals

It is not known if Forget-Me-Not interacts with any medicines. Before taking Forget-Me-Not, talk with your healthcare professional if you take any medications.

Interactions with herbs & supplements

Pyrrolizidine alkaloids (PAs)-containing herbs and supplements: Forget-me-not contains PAs, dangerous chemicals that can harm the liver. Using it along with other herbs that also contain this dangerous chemical might increase the chance of developing serious side effects, including liver damage and cancer. Other herbs that contain hepatotoxic PAs include alkanna, boneset, borage, butterbur, coltsfoot, comfrey, gravel root, groundsel, hemp agrimony, hound's tongue, dusty miller, golden ragwort, and tansy ragwort.

Interactions with foods

There are no known interactions with foods.


There isn't enough information available to know how forget-me-not might work.
Lymphomyosot N
Practitioner product has licensed monographs from TRC Healthcare.
This monograph was last reviewed on 23/10/2022 06:58:45 and last updated on 24/12/2012 22:09:57. Monographs are reviewed and/or updated multiple times per month and at least once per year.
Natural Medicines disclaims any responsibility related to medical consequences of using any medical product. Effort is made to ensure that the information contained in this monograph is accurate at the time it was published. Consumers and medical professionals who consult this monograph are cautioned that any medical or product related decision is the sole responsibility of the consumer and/or the health care professional. A legal License Agreement sets limitations on downloading, storing, or printing content from this Database. No reproduction of this monograph or any content from this Database is permitted without written permission from the publisher. It is unlawful to download, store, or distribute content from this site.