Listed below are the 146 drugs which Walmart and Target sell as part of their Generic Drug Prescription Programs. I've included the equivalent brand name drug in parentheses. Both Walmart and Target sell a 30-day supply of these for a flat $4, and a 90-day supply for $10. Seven of them are a little more, ($9 for 30 days) and are marked with a "#" symbol.

I don't know any way to get drugs cheaper than this. Many of these are less expensive than even an insurance co-pay.

Walmart sometimes refers to having "400" or "hundreds of $4 prescriptions" available, but that number includes different doses and forms of the same medicine, such as Cephalexin (generic for Keflex) 250mg caplet and the 250mg tablet.

For drugs not on this list, and therefore not $4, I recommend Sam's Club or Costco pharmacy. Target will price match Costco and Sam's Club pharmacy prices on drugs. I also recommend ordering all of your medications from one single pharmacy, to increase their chances of noticing potentially fatal drug interactions. Oh, and be careful with generic thyroid medicine, I hear it can produce unexpected results.

Disclaimer: I am not a doctor nor pharmacist and do not have a medical degree. I can't even remember the last time I personally had a prescription filled.

ACYCLOVIR (Zovirax)
ALBUTEROL (Accuneb, Proventil)
ALENDRONATE SOD (Fosamax)#
ALLOPURINOL (Zyloprim)
AMILORIDE-HCTZ (Midamor)
AMITRIPTYLINE (Elavil)
AMOXICILLIN (Amoxil)
ANTIPYRINE/BENZOCAINE OTIC
ATENOLOL (Tenormin)
ATENOLOL-CHLORTHALIDONE (Tenoretic, Tenormin)
ATROPINE SULFATE

BACITRACIN OP.
BACLOFEN (Lioresal)
BELLADONA ALKALOID/PB
BENAZEPRIL (Lotensin)
BENZONATATE (Tessalon Perles)
BENZOYL PEROXIDE (Clindoxyl, Panoxyl)
BENZTROPINE (Congentin)
BETAMETHASONE DIPROPIONATE (Diprolene)
BETAMETHASONE VALERATE (Betaderm)
BISOPROLOL-HCTZ (Ziac)
BUMETANIDE (Bumez, Burinex)
BUPROPION ER (Wellbutrin)#
BUSPIRONE (Buspar)

CAPTOPRIL (Capoten)
CARBAMAZEPINE (Tegretol)
CARVEDILOL (Coreg)
CEPHALEXIN (Keflex)
CERON DM SYRUP
CHLORHEXIDINE GLUCONATE (Peridex, Periogard)
CHLORPROPAMIDE (Diabinese)
CHLORTHALIDONE (Tenoretic)
CIMETIDINE
CIPROFLOXACIN (Cipro, Proquin)
CITALOPRAM (Celexa)
CLOMIPHENE (Clomid, Serophene)#
CLONIDINE (Catapres)
COLCHICINE
C-PHEN DROPS (Alka-Seltzer Plus Cold and Cough)
CYCLOBENZAPRINE (Fexmid, Flexeril)
CYTRA2 SOLUTION

DEX PC SYRUP (Alka-Seltzer Plus Cold and Cough)
DEXAMETHASONE (Decadron)
DICLOFENAC DR (Cataflam, Voltaren)
DICYCLOMINE (Bentyl)
DIGOXIN (Lanoxin)
DILTIAZEM (Cardizem Cd)
DOXAZOSIN (Cardura)
DOXEPIN HCL (Sinequan)
DOXYCYCLINE HYCLATE (Vibra-Tabs, Vibramycin)

ENALAPRIL (Vasotec)
ENALAPRIL-HCTZ (Vaseretic)
ERYTHROMYCIN EC
ERYTHROMYCIN OP
EST ESTROGEN/METHYL TESTOST DS (Estratest)#
EST ESTROGEN/METHYL TESTOST HS (Estratest)#
ESTRADIOL (Estrace, Climara, Estraderm, Menostar)
ESTROPIPATE (Ogen)

FAMOTIDINE (Pepcid)
FLUCONAZOLE (Diflucan)
FLUOCINOLONE ACET (Lidex)
FLUOCINONIDE (Lidex)
FLUOXETINE (Prozac)
FLUPHENAZINE
FOLIC ACID (Acifolic, Apo-Folic, Cytofol)
FUROSEMIDE (Lasix)

GENTAMICIN
GENTAMICIN (Genoptic)
GLIMEPIRIDE (Amaryl)
GLIPIZIDE (Glucotrol)
GLYBURIDE (Micronase)
GUANFACINE (Tenex)
HALOPERIDOL (Haldol)
HYDRALAZINE (Apresoline)
HYDROCHLOROTHIAZIDE (HCTZ)
HYDROCORTISONE (Cortaid and many more)
HYDROCORTISONE AC

IBUPROFEN (Midol, Nuprin, Advil, Motrin)
INDAPAMIDE
INDOMETHACIN (Indocin)
IPRATROPIUM (Altrovent)
ISONIAZID (Rifater)
ISOSORBIDE MONONITRATE (Imdur)

KLORCON
KLORCON M10

LACTULOSE SYRUP
LEVOBUNOLOL (Betagan)
LEVOTHYROXINE (Synthroid, Levoxyl, Levothroid)
LIDOCAINE (Lidamantle, Xylocaine)
LISINOPRIL (Zestril)
LISINOPRIL-HCTZ (Zestoretic, Prinzide)
LITHIUM CARBONATE (Duralith)
LORATADINE (Alavert, Claritin)
LOVASTATIN (Mevacor)

MAG64
MAGNESIUM OXIDE
MEDROXYPROGESTERONE ACETATE (Depo Provera)
MEGESTROL (Magestin; Megace)
MELOXICAM (Mobic)
METFORMIN (Avandamet)
METHYLDOPA (Aldomet)
METHYLPRED (Medrol, Depo-Medrol)
METOCLOPRAMIDE (Reglan)
METOPROLOL TARTRATE (Lopresor)
METRONIDAZOLE (Flagyl)

NADOLOL (Corgard)
NAPROXEN (Naprosyn, Aleve)
NEOMYCIN/POLYMYXIN/DEXAMETHASONE (Ciprodex)
NORTRIPTYLINE (Aventyl, Pamelor)
NYSTATIN
NYSTATIN/TRIAMCIN

OXYBUTYNIN (Ditropan, Lyrinel XL)

PAROXETINE (Paxil)
PENICILLIN VK (Penicillin V Potassium)
PHENAZOPYRIDINE (Pyridium)
PILOCARPINE (Salagen)
PINDOLOL (Viskazide)
PIROXICAM (Feldine)
POLYMYXIN SULFATE/TMP OP.
POTASSIUM CHLORIDE
PRAVASTATIN (Pravachol)
PRAZOSIN HCL (Minipress)
PREDNISONE (Cordrol, Meticorten, Orasone)
PRENATAL PLUS
PROCHLORPERAZINE (Compazine)
PROMETHAZINE
PROMETHAZINE DM (Pentazine, Phenergan)
PROPRANOLOL (Inderal)

RANITIDINE (Zantac)

SALSALATE (Disalcid)
SELENIUM SULFIDE (dandrex, Selsun Blue)
SILVER SULFADIAZINE (Silvadene, Thermazene)
SMZ/TMP (Septra, Cotrim)
SODIUM FLUORIDE
SOTALOL HCL (Betapace)
SPIRONOLACTONE (Aldactone)
SPRINTEC (Ortho Cyclen)#
SULFACET SODIUM (Sodium Sulamyd)

TAMOXIFEN (Nolvadex, Tamofen)#
TERAZOSIN (Hytrin)
TERBINAFINE (Lamisil)
TETRACYCLINE (Ala-Tet, Panmycin)
THIORIDAZINE (Mellaril)
TIMOLOL MALEATE (Cosopt)
TOBRAMYCIN (Tobradex)
TRAZODONE (Desyrel)
TRIAMCINOLONE (Kenacort, Aristocort, and Atolone)
TRIAMTERENE-HCTZ
TRIHEXYPHENIDYL
TRI-SPRINTEC (Ortho TriCyclen)#

VENTOLIN (ReliOn) #
VERAPAMIL (Isoptin)

WARFARIN (Coumadin)