- Reposans-10
- Requip
- Rescon
- Rescon GG containing Guaifenesin and Phenylephrine
- Rescon JR
- Rescon JR containing Chlorpheniramine Maleate and Pseudoephedrine Hydrochloride
- Rescon containing Chlorpheniramine Maleate and Pseudoephedrine Hydrochloride
- Rescon-DM
- Rescon-ED
- Rescon-ED containing Chlorpheniramine Maleate and Pseudoephedrine Hydrochloride
- Rescon-GG
- Rescriptor
- Rescudose
- Rescula
- Reserfia
- Reserpine
- Reserpine, Hydralazine, and Hydrochlorothiazide
- Resol ‡
- Resorcinol
- Resorcinol and Sulfur
- Resource
- Resource Plus
- Respa-1st
- Respa-1st containing Guaifenesin and Pseudoephedrine Hydrochloride
- Respa-DM
- Respahist
- Respahist containing Brompheniramine Maleate and Pseudoephedrine Hydrochloride
- Respaire-120 SR
- Respaire-120 SR containing Guaifenesin and Pseudoephedrine Hydrochloride
- Respaire-60 SR
- Respaire-60 SR containing Guaifenesin and Pseudoephedrine Hydrochloride
- Respalor
- Respbid
- RespiGam
| - Respiratory Syncytial Virus Immune Globulin Intravenous
- Restasis
- Restoril
- Resyl
- Retavase
- Retin-A
- Retin-A MICRO
- Retisol-A
- Retrovir
- Rev-Eyes
- Revatio
- Reyataz
- Rezamid Acne Treatment
- Rezamid Lotion
- Rh O
- Rheaban
- Rheumatrex
- Rhinalar
- Rhinall
- Rhinall-10 Children's Flavored Nose Drops
- Rhinatate containing Chlorpheniramine Tannate, Phenylephrine Tannate, and Pyrilamine Tannate
- Rhinocort
- Rhinocort Aqua
- Rhinocort Turbuhaler
- Rhinosyn
- Rhinosyn-DM
- Rhinosyn-DMX Expectorant
- Rhinosyn-PD
- Rhinosyn-X
- Rho-Loperamide
- RhoGAM
- Rhodis
- Rhodis-EC
| - Rhotrimine
- Rhulicort
- Ribavirin
- Rid-A-Pain
- Rid-A-Pain Compound
- Ridaura
- Rifabutin
- Rifadin
- Rifadin IV
- Rifamate
- Rifamate containing Rifampin and Isoniazid
- Rifampin
- Rifampin and Isoniazid
- Rifampin, Isoniazid, and Pyrazinamide
- Rifapentine
- Rifater
- Rifater containing Rifampin, Isoniazid, and Pyrazinamide
- Rifaximin
- Rilutek
- Riluzole
- Rimactane
- Rimantadine
- Rimexolone
- Rimso-50
- Rinade B.I.D.
- Riopan
- Riopan Extra Strength
- Riopan Plus
- Riopan Plus Double Strength
- Riopan Plus Extra Strength
- Riphenidate
- Risedronate
- Risperdal
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