Can NOW Supplements L-Lysine Help with Diarrhea?

Last update

5/20/2026

Reviewed By

🩺 Kety Ben David, B.Sn.

Overview

SCIENTIFIC SCORE

No researches found

N/A

USERS' SCORE

Moderately Good

Based on 2 Reviews

7.7

Supplement Facts

Serving Size: 1 Tablet

Amount Per Serving

%DV

L-Lysine (from 637 mg L-Lysine Hydrochloride)

500 mg

Most Useful Reviews

7.5

Reduces diarrhoea

This is an excellent medication that helps alleviate anxiety and effectively counters diarrhoea due to stress.

Ineffective for diarrhea

These tablets are dreadful compared to Now Foods lysine capsules. I've been using the capsules for years without any issues. I purchased these tablets only because the capsules were out of stock. Every time I take these, especially over several consecutive days, I experience loose stools or diarrhoea, which never occurred with the capsules, even at higher doses. Upon comparing the ingredients, I noticed this tablet contains silicone dioxide, which capsules do not. It also includes magnesium stearate instead of stearic acid. Research indicates that magnesium stearate may have a laxative effect. I do not recommend these; opt for capsules instead.