- Peginterferon alfa-2a
- Peginterferon alfa-2b
- Peglyte
- Pegvisomant
- Pemetrexed
- Pemirolast
- Pemoline
- Pen-Vee
- Pen-Vee K
- Penbritin
- Penbutolol
- Penciclovir
- Penciclovir Cream
- Penecort
- Penetrex
- Penglobe
- Penicillamine
- Penicillin G Potassium or Sodium Injection
- Penicillin V Potassium Oral
- Penicillins
- Penicillins and Beta-Lactamase Inhibitors
- Penlac Nail Lacquer
- Penlac TMNail Lacquer
- Penntuss
- Penta-Valproic
- Pentacarinat
- Pentacort
- Pentafuside
- Pentagastrin
- Pentam 300
- Pentam 300 Inhalation
- Pentam 300 Injection
- Pentamidine
- Pentamidine Inhalation
| - Pentamidine Isethionate Injection
- Pentamycetin Ophthalmic Ointment
- Pentamycetin Ophthalmic Solution
- Pentasa
- Pentazine
- Pentazocine and Naloxone
- Pentetate Calcium Trisodium
- Penthrane
- Pentids
- Pentobarbital Oral and Rectal
- Pentolair
- Pentosan
- Pentosan Polysulfate
- Pentostatin
- Pentothal
- Pentoxifylline
- Pentrax Anti-Dandruff Tar Shampoo
- Pentrax Extra-Strength Therapeutic Tar Shampoo
- Pep-Back
- Pepcid
- Pepcid AC
- Pepcid AC Acid Controller
- Pepcid AC Gelcaps
- Pepcid AC Maximum Strength
- Pepcid Complete
- Pepcid I.V.
- Pepcid Injection
- Pepcid Premixed in Iso-osmotic Sodium Chloride Injection
- Pepcid RPD
- Peptamen
- Peptamen Junior
- Peptamen VHP
- Peptavlon
| - Pepto Diarrhea Control
- Pepto-Bismol
- Pepto-Bismol Easy-to-Swallow Caplets
- Pepto-Bismol Maximum Strength
- Peptol
- Perative
- Percocet
- Percocet 10/650
- Percocet 2.5/325
- Percocet 5/325
- Percocet 7.5/500
- Percocet-Demi
- Percodan
- Percodan-Demi
- Percogesic Aspirin-Free Caplets Extra Strength containing Diphenhydramine Hydrochloride and Acetaminophen
- Percogesic Extra Strength Caplets containing Acetaminophen and Diphenhydramine Hydrochloride
- Percogesic containing Acetaminophen and Phenyltoloxamine Citrate
- Percolone
- Perdiem
- Perdiem Fiber
- Perflubron
- Pergolide
- Pergonal
- Peri-Colace
- Peri-Dos Softgels
- Periactin
- Peridex
- Peridol
- Perindopril
- PerioChip
- PerioGard
- Periostat
- Permapen
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