Table 4 Assessment^a of medicinal plants based on peer-reviewed references^b of the last 20 years aiming respiratory indications

Achillea millefolium L.

2

in vitro

2¹

1

in vivo + clinical

1²

Agrimonia eupatoria L.

1

in vitro

1³

0

in vivo + clinical

Allium sativum L.

1

in vitro

1⁴

0

in vivo + clinical

Althaea officinalis L.

0

in vitro

4

in vivo + clinical

4⁵

Camellia sinensis (L). KUNTZE

0

in vitro

2

in vivo + clinical

1⁶

1⁷

1⁸

Cetraria islandica (L.) ACH.

0

in vitro

1

in vivo + clinical

1⁹

Echinacea purpurea (L.) MOENCH

3

in vitro

2¹⁰

2¹¹

8

in vivo + clinical

1¹²

1¹³

1¹⁴

2¹⁵

1¹⁶

2¹⁷

2¹⁸

Foeniculum vulgare (L.) MILL.

2

in vitro

2¹⁹

0

in vivo + clinical

Glycyrrhiza glabra L.

1

in vitro

1²⁰

2

in vivo + clinical

1²¹

1²²

Mentha x piperita L.

1

in vitro

1²³

0

in vivo + clinical

Pimpinella anisum L.

2

in vitro

2²⁴

0

in vivo + clinical

Plantago lanceolata L.

1

in vitro

1²⁵

0

in vivo + clinical

Primula veris L.

1

in vitro

1²⁶

0

in vivo + clinical

Rubus fruticosus L.

0

in vitro

1

in vivo + clinical

1²⁷

Rumex ssp. L.

2

in vitro

1²⁸

2²⁹

0

in vivo + clinical

Salvia officinalis L.

0

in vitro

2

in vivo + clinical

1³⁰

1³¹

Sambucus nigra L.

1

in vitro

1³²

1

in vivo + clinical

1³³

Thymus vulgaris L.

9

in vitro

3³⁴

6³⁵

1

in vivo + clinical

1³⁶

Tussilago farfara L.

1

in vitro

1³⁷

1

in vivo + clinical

1³⁸

1³⁹

Urtica dioica L.

3

in vitro

3⁴⁰

1

in vivo + clinical

1⁴¹

Vaccinium myrtillus L.

1

in vitro

1⁴²

0

in vivo + clinical

in vitro

5

0

0

0

0

0

6

0

0

7

0

0

0

0

0

0

0

0

0

0

1

1

0

0

0

0

0

0

0

0

in vivo + clinical

2

0

0

0

0

1

2

0

1

2

0

0

2

0

0

4

0

0

1

0

0

2

0

0

1

0

0

3

0

1

in vitro

9

0

0

0

0

0

8

0

0

15

0

0

0

0

0

0

0

0

0

0

1

2

0

0

0

0

0

0

0

0

in vivo + clinical

2

0

0

0

0

1

2

0

1

2

0

0

2

0

0

7

0

0

2

0

0

2

0

0

1

0

0

4

0

2