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Table 1

From: Effects of first and second generation antihistamines on muscarinic induced mucus gland cell ion transport

Drug

aMuscarinic inhibition (pA2)

N

H1 receptor inhibition (~1/2 max-μM)

N

Atropine

9.4 ± 0.1

9

ND

 

Methoctramine

5.6 ± 0.1

11

ND

 

4-DAMP

8.6 ± 0.1

12

ND

 

Diphenhydramine

6.2 ± 0.1

15

0.3

12

Desloratadine

6.4 ± 0.1

13

0.02

15

Hydroxyzine

4.8 ± 0.1

11

0.14

12

Cetirizine

No effect (at 100 μM)

13

0.12

14

Loratadine

No effect (at 30 μM)

3

12

8

Fexofenadine

No effect (at 10 μM)

3

0.25

11

  1. a- all estimates for Ki are statistically different (p < 0.001) except diphenhydramine and desloratadine (p = 0.135)
  2. ND: Not done