- Packera aurea
- Paeonia officinalis
- Paliurus spina-christi
- Panax quinquefolium
- Panax quinquefolius
- Pancratium illyricum
- Pancratium maritimum
- Pancratium zeylanicum
- Panicum capillare
- Panicum italicum
- Panicum miliaceum
- Parasenecio hastatus
- Parietaria officinalis
- Paris quadrifolia
- Parkinsonia aculeata
- Parnassia palustris
- Parsnip
- Parthenium hysterophorus
- Parthenium integrifolium
- Parthenocissus quinquefolia
- Passiflora capsularis
- Passiflora foetida
- Passiflora incarnata
- Passiflora laurifolia
- Passiflora lutea
- Passiflora maliformis
- Passiflora murucuja
- Passiflora rubra
- Passiflora suberosa
- Paullinia pinnata
- Pavetta indica
- Pea
- Peanut
- Pedicularis sceptrum-carolinum
- Pedicularis verticillata
- Peganum harmala
- Peltandra virginica
- Pennisetum alopecuroides
- Peppermint
- Periploca graeca
- Persicaria amphibia
- Persicaria bistorta
- Persicaria hydropiper
- Persicaria lapathifolia
- Persicaria maculosa
- Persicaria sagittata
- Persicaria virginiana
- Petasites hybridus
- Petromarula pinnata
- Peucedanum officinale
- Peucedanum ostruthium
- Phacelia dubia
- Phaeoceros laevis
- Phalaenopsis amabilis
- Phalaris arundinacea
- Phalaris canariensis
- Phanera variegata
- Phaseolus coccineus
- Phaseolus lunatus
- Phaseolus radiatus
- Phaseolus vulgaris
- Philadelphus coronarius
- Phlebodium aureum
- Phleum alpinum
- Phleum pratense
- Phlomis fruticosa
- Phlox divaricata
- Phlox pilosa
- Phlox subulata
- Phoenix dactylifera
- Phryma leptostachya
- Phyllanthus acidus
- Phyllanthus emblica
- Phyllanthus niruri
- Phyllanthus urinaria
- Phyllodoce caerulea
- Physalis angulata
- Physalis minima
- Physalis pubescens
- Physalis viscosa
- Phyteuma spicatum
- Phytolacca americana
- Picea abies
- Picris hieracioides
- Pilosella aurantiaca
- Pilularia globulifera
- Pimpinella anisum
- Pimpinella saxifraga
- Pinguicula alpina
- Pinguicula lusitanica
- Pinguicula vulgaris
- Pinus cembra
- Pinus pinea
- Pinus strobus
- Pinus sylvestris
- Pinus taeda
- Piper aduncum
- Piper betle
- Piper longum
- Piper nigrum
- Pistachio
- Pistacia lentiscus
- Pistacia terebinthus
- Pistacia vera
- Pistia stratiotes
- Pisum sativum
- Plantago asiatica
- Plantago coronopus
- Plantago cretica
- Plantago lanceolata
- Plantago major
- Plantago maritima
- Plantago media
- Platanthera bifolia
- Platanthera ciliaris
- Platanthera flava
- Platanthera psycodes
- Platanus occidentalis
- Platanus orientalis
- Platycladus orientalis
- Pluchea indica
- Plukenetia volubilis
- Plumbago europaea
- Plumbago zeylanica
- Plumeria alba
- Plumeria obtusa
- Plumeria rubra
- Poa alpina
- Poa annua
- Poa bulbosa
- Poa compressa
- Poa nemoralis
- Poa pratensis
- Poa trivialis
- Pogonia ophioglossoides
- Polemonium caeruleum
- Polianthes tuberosa
- Polygala chamaebuxus
- Polygala myrtifolia
- Polygala sanguinea
- Polygala senega
- Polygala vulgaris
- Polygonatum verticillatum
- Polygonum aviculare
- Polygonum chinense
- Polygonum erectum
- Polygonum pensylvanicum
- Polymnia canadensis
- Polypodium cambricum
- Polypodium virginianum
- Polypodium vulgare
- Pomegranate
- Pontederia cordata
- Populus alba
- Populus balsamifera
- Populus heterophylla
- Populus nigra
- Populus tremula
- Portulaca oleracea
- Portulaca pilosa
- Potamogeton compressus
- Potamogeton lucens
- Potamogeton natans
- Potato
- Potentilla bifurca
- Potentilla fragarioides
- Potentilla norvegica
- Potentilla recta
- Potentilla reptans
- Prasium majus
- Prenanthes purpurea
- Primula auricula
- Primula farinosa
- Primula veris
- Proso millet
- Prospero autumnale
- Protea acaulos
- Prunella vulgaris
- Prunus armeniaca
- Prunus avium
- Prunus cerasus
- Prunus domestica
- Prunus laurocerasus
- Prunus lusitanica
- Prunus mahaleb
- Prunus myrtifolia
- Prunus padus
- Prunus spinosa
- Prunus virginiana
- Pseudognaphalium obtusifolium
- Pseudorchis albida
- Psidium guajava
- Psoralea corylifolia
- Psoralea pinnata
- Ptelea trifoliata
- Pteris longifolia
- Pteris semipinnata
- Pteris vittata
- Pulicaria dysenterica
- Pulmonaria angustifolia
- Pulmonaria officinalis
- Pulsatilla alpina
- Pulsatilla patens
- Pulsatilla pratensis
- Pulsatilla vulgaris
- Punica granatum
- Purple mangosteen
- Pycnanthemum incanum
- Pycnanthemum virginianum
- Pyrola minor
- Pyrola rotundifolia
- Pyrus communis
Polygonum multiflorum dried roots
- He shou wu (何首乌) (Polygonum multiflorum )
- Claimed to be a cure for baldness and grey hair, as well as being promoted as a immune system booster (though he shou wu contains emodin, a possibly immunosuppresant substance).<wiki/List_of_medicinal_plants#cite_note-hsu-225"> There's not enough evidence to evaluate claims.<wiki/List_of_medicinal_plants#cite_note-hsu-225">
Petroselinum crispum
- Parsley (Petroselinum crispum)
- Used for: edema, jaundice, asthma, coughs, menstrual problems, conjunctivitis and blepharitis.<wiki/List_of_medicinal_plants#cite_note-theherbbook-7"> It is sometimes used for home abortions, but its effectiveness for this has not been scientifically studied.
- The claims: Parsley is touted as a general anti-toxin,<wiki/List_of_medicinal_plants#cite_note-171"> control blood pressure, cure diabetes,<wiki/List_of_medicinal_plants#cite_note-172"> urinary tract infections, prevents cancer, stimulates contractions of the uterus, cures rheumatism, treats kidney and bladder stones,<wiki/List_of_medicinal_plants#cite_note-173"> and can even remove tooth aches.
- The truth: Surprisingly, it is dangerous for women, as it can cause the uterus to contract prematurely and should not be inserted into or rubbed near the uterus. It is mildly anti-microbialial — on those days when you can't run to your medicine cabinet and grab a tube of far more effective antibiotic.
- Harmful effects: It is harmless when taken in the small amounts found in food, but the large amounts used in herbal medicine may cause anemia and liver or kidney problems, and make water retention, high blood pressure, and kidney disease worse.<wiki/List_of_medicinal_plants#cite_note-parsley-174"> Topically applied parsley oil can make skin become more sensitive to sunlight and cause a rash.<wiki/List_of_medicinal_plants#cite_note-parsley-174">
Papaver somniferum
- Opium poppy (Papaver somniferum)
- In TCM: yīngsù (罌粟)<wiki/List_of_medicinal_plants#cite_note-read-12">
- Latex exuded by immature seed pod used for analgesic purposes. Tinctures of seeds and straw used to a lesser extent. The latex at least is suggested by research to be effective, albeit prone to habituation and dependency. See also heroin.
Panax ginseng roots for sale
- Asian ginseng (Panax ginseng); in TCM: rénshēn (人參)<wiki/List_of_medicinal_plants#cite_note-read-12">
- American ginseng (P. quinquefolius) is believed by herbalists to have the same constituents as P. ginseng but to be less efficacious than P. ginseng.<wiki/List_of_medicinal_plants#cite_note-theherbbook-7">
- Claimed to: be a wonder plant and cure everything.<wiki/List_of_medicinal_plants#cite_note-stuart-5"><wiki/List_of_medicinal_plants#cite_note-theherbbook-7">
- Beneficial effects: Ginseng is effective for erectile dysfunction and chronic obstructive pulmonary disease symptoms.<wiki/List_of_medicinal_plants#cite_note-ginseng-19"> A specific cream containing ginseng can help with premature ejaculation.<wiki/List_of_medicinal_plants#cite_note-ginseng-19"> When used with ginkgo leaf extract (see Ginkgo below), ginseng may "improve memory in otherwise healthy people between the ages of and ," but not in young adults.<wiki/List_of_medicinal_plants#cite_note-ginseng-19">
- Harmful effects:
- Side effects may include insomnia, or, more rarely, menstrual problems, breast pain, increased heart rate, high or low blood pressure, headache, loss of appetite, diarrhea, itching, rash, dizziness, mood changes, vaginal bleeding, Stevens-Johnson syndrome (a severe rash), liver damage, severe allergic reactions<wiki/List_of_medicinal_plants#cite_note-ginseng-19">, mania and psychosis<wiki/List_of_medicinal_plants#cite_note-maniapsychosis-20">.
- Panax ginseng contains a substance that has been found to cause birth defects in animals.<wiki/List_of_medicinal_plants#cite_note-ginseng-19">
Piper methysticum
- Kava (Piper methysticum)
- Effective for anxiety.<wiki/List_of_medicinal_plants#cite_note-kava-139">
- Side effects may include liver damage leading to death, even with short-term use (- months) of normal doses,<wiki/List_of_medicinal_plants#cite_note-kava-139"> and sedation, oral and lingual dyskinesia, torticollis, oculogyric crisis, exacerbation of Parkinson's disease, painful twisting movements of the trunk, and rash.<wiki/List_of_medicinal_plants#cite_note-aafp-90"> Several European countries banned or restricted the use of kava based on its hepatotoxic effects; the US FDA only issued a warning.<wiki/List_of_medicinal_plants#cite_note-dietz-140"> A cancer study of kava extract in mice and rats found that it caused liver cancer in male and female mice and "increased incidences of lesions in the liver, forestomach, kidney, eye, and pancreas of male and female rats, in the liver of male and female mice, and in the forestomach of female mice."<wiki/List_of_medicinal_plants#cite_note-141">