Research Article
Effects of -Cystine and -Theanine Supplementation on the Common Cold: A Randomized, Double-Blind, and Placebo-Controlled Trial
Table 6
Cold symptoms during the 5-week trial period.
| | Symptom | Cystine/Theanine group | Placebo group | -valu |
| | Nasal | Runny nose | 24 (27.3) | 35 (41.2) | .057 | | Nasal congestion | 19 (21.6) | 22 (25.9) | .593 | | Sneeze | 16 (18.2) | 23 (27.1) | .203 |
| | Throat | Sore throat | 19 (21.6) | 29 (34.1) | .089 | | Cough | 17 (19.3) | 23 (27.1) | .280 | | Sputum | 16 (18.2) | 19 (22.4) | .572 |
| | Fever | Chill | 10 (11.4) | 21 (24.7) | .029 | | Fever | 9 (10.2) | 24 (28.2) | .003 |
| | Pain | Headache | 15 (17.0) | 20 (23.5) | .345 | | Arthralgia | 7 (8.0) | 15 (17.6) | .069 | | Dermatalgia | 2 (2.3) | 1 (1.2) | 1.000 |
| | General malaise | 13 (14.8) | 21 (24.7) | .126 |
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Fisher’s exact test was used for comparisons between groups.
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