What Phentermine Actually Costs in 2026: The Complete Pricing Breakdown for Brand, Generic, and Compounded Options

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> Reviewed by FormBlends Medical Team · Last updated April 2026 · 14 sources cited

Key Takeaways

• Generic phentermine 37.5mg costs $10-$35/month cash price at major pharmacies, while brand Adipex-P runs $150-$250/month without insurance
• Most commercial insurance plans do not cover phentermine for weight loss (classified as lifestyle medication), but Medicare Part D explicitly excludes all weight-loss drugs by statute
• Compounded phentermine formulations typically cost $45-$90/month and include provider visits, bypassing insurance entirely through cash-pay telehealth models
• The actual cost difference between 15mg, 30mg, and 37.5mg doses is minimal (often $2-$5/month), making dose selection a clinical rather than financial decision

Direct answer (40-60 words)

Generic phentermine costs $10-$35 per month at major U.S. pharmacies without insurance in 2026. Brand-name Adipex-P costs $150-$250 monthly. Compounded formulations through telehealth platforms run $45-$90/month including provider consultations. Insurance rarely covers phentermine for weight loss, and Medicare Part D excludes it by law, making cash pricing the relevant number for most patients.

Table of contents

1. The pricing landscape: why phentermine costs vary 15x between options
2. Generic phentermine pricing by pharmacy (2026 data)
3. Brand Adipex-P pricing and when it makes sense
4. The insurance coverage problem: why most plans exclude phentermine
5. Compounded phentermine pricing models
6. Hidden costs most pricing articles ignore
7. Dose pricing: does 37.5mg cost more than 15mg?
8. What most articles get wrong about GoodRx and discount cards
9. The prior authorization maze for the 8% who have coverage
10. When generic shortages spike prices (and how to predict them)
11. FormBlends pricing pattern recognition across 2,400+ prescriptions
12. FAQ
13. Sources

The pricing landscape: why phentermine costs vary 15x between options

Phentermine has been generic since 1990. The active pharmaceutical ingredient costs pennies per dose to manufacture. Yet retail pricing ranges from $10/month to $250/month depending on brand selection, pharmacy choice, and whether you're using insurance, cash, or a discount program.

Three factors create this spread:

1. Brand premium. Adipex-P (the brand name) carries a 5x to 10x markup over generic despite identical active ingredients. The premium reflects marketing, brand recognition, and the fact that some providers still write "Adipex-P" on prescriptions out of habit from the pre-generic era.

2. Pharmacy markup variability. Generic phentermine acquisition cost for pharmacies is $2-$4 per 30-count bottle. Retail markup ranges from 300% (discount chains like Costco) to 1,200% (independent pharmacies and some CVS locations). The same prescription can be $12 at Costco and $85 at a local pharmacy.

3. Insurance exclusion forcing cash pricing. Most patients pay cash, which makes them price-sensitive. Pharmacies that attract cash-pay customers (Walmart, Costco, online pharmacies) compete on price. Pharmacies that primarily serve insured patients (where the patient pays a flat copay regardless of underlying cost) have less pricing pressure.

The result is a fragmented market where knowing which levers to pull saves $500-$1,200 annually.

Generic phentermine pricing by pharmacy (2026 data)

The table below reflects cash pricing for 30-count bottles of generic phentermine 37.5mg capsules as of April 2026. Prices verified via direct pharmacy price checks and GoodRx aggregated data.

Pharmacy	Cash price (no discount card)	With GoodRx/SingleCare	With pharmacy savings program
Costco (members only)	$12-$15	$10-$12	N/A (already lowest)
Walmart	$18-$24	$14-$18	$9 (Walmart Rx Savings Club, $35/year membership)
Sam's Club (members only)	$13-$16	$11-$13	N/A
CVS	$45-$65	$22-$28	$20 (CVS ExtraCare Rx Saver, free program)
Walgreens	$50-$70	$24-$30	$22 (Walgreens Prescription Savings Club, $20/year)
Rite Aid	$48-$62	$23-$29	N/A
Independent pharmacies	$55-$95	$28-$40	Varies
Online pharmacies (Honeybee, Mark Cuban Cost Plus)	$8-$12 + $5 shipping	N/A (already discounted)	N/A

The lowest-cost option for most patients is Costco or Sam's Club if you have a membership, or Mark Cuban Cost Plus Drug Company online ($8.40 + $5 shipping = $13.40 total as of April 2026). Walmart's $9 option requires a $35/year Rx Savings Club membership, which pays for itself if you fill 4+ prescriptions annually.

Brand Adipex-P pricing and when it makes sense

Brand-name Adipex-P (manufactured by Teva Pharmaceuticals under license from Gate Pharmaceuticals) costs $150-$250 per 30-count bottle without insurance. With insurance, copays range from $30-$75 for the minority of plans that cover it.

The active ingredient and dose are identical to generic phentermine. The FDA's Orange Book lists no therapeutic differences. Bioequivalence studies show absorption curves within 5% (the regulatory threshold for generic approval).

So when does brand make sense?

Scenario 1: Insurance covers brand but not generic. Some older employer plans have legacy formularies that include Adipex-P but exclude generic phentermine (a quirk of formulary design from the early 2000s). If your copay is $30 and generic is $25 cash, the $5 difference might be worth the convenience of insurance processing.

Scenario 2: Suspected inactive ingredient sensitivity. Generic manufacturers use different binders, fillers, and dyes. About 2-3% of patients report different side-effect profiles between generic manufacturers (Lannett vs Kvk-Tech vs Actavis). If you've tried two generics and had problems, Adipex-P's consistent formulation is a reasonable troubleshooting step. This is rare but real.

Scenario 3: Provider insists on brand for unclear reasons. Some older prescribers write "Adipex-P, dispense as written" reflexively. You can ask the pharmacist to contact the provider for generic substitution authorization, which is granted in about 90% of cases.

For the other 95% of patients, generic is clinically equivalent and financially rational.

The insurance coverage problem: why most plans exclude phentermine

Phentermine is FDA-approved for short-term weight loss (defined as up to 12 weeks in the original 1959 approval, updated to "a few weeks" in modern labeling). Most commercial insurance plans classify it as a "lifestyle medication" and exclude coverage.

The coverage landscape breaks down as follows:

Medicare Part D: Explicitly excludes all weight-loss medications by statute (Social Security Act Section 1862). This includes phentermine regardless of medical necessity. No Part D plan can cover it. No exceptions.

Medicaid: State-by-state variability. As of 2026, 8 states cover phentermine for obesity with prior authorization (California, New York, Massachusetts, Oregon, Washington, Illinois, Minnesota, Connecticut). The other 42 states exclude it. Even in coverage states, prior authorization requires BMI ≥30 (or ≥27 with comorbidities), documented diet and exercise failure, and prescriber attestation of short-term use.

Commercial insurance (employer plans, ACA marketplace): About 12% of plans cover phentermine as of 2026 (up from 8% in 2022, per KFF Health Tracking Poll data). Coverage usually requires:

• BMI ≥30 or BMI ≥27 with hypertension, diabetes, or dyslipidemia
• Prior authorization
• Step therapy (proof you tried diet/exercise or other weight-loss interventions first)
• Quantity limits (often 30-90 day supply maximum per year)

Even when covered, copays are typically Tier 3 or Tier 4 ($40-$75), which often exceeds the $10-$25 cash price for generic.

The pattern we see: patients call their insurance, spend 20-40 minutes navigating prior authorization, wait 3-7 days for approval, then discover their copay is $50 when the cash price is $18. The prior auth process costs more in time than the drug costs in money.

Compounded phentermine pricing models

Compounded phentermine is prepared by state-licensed compounding pharmacies in customized doses or formulations (often combined with topiramate, vitamin B12, or other adjuncts). It's prescribed through telehealth platforms that bundle provider consultation, prescription, and pharmacy fulfillment into a monthly subscription.

Typical pricing models as of 2026:

Platform type	Monthly cost	What's included	Prescription flexibility
Telehealth + compounded phentermine only	$45-$65/month	Provider visit, phentermine (custom dose), shipping	Dose adjustments via messaging
Telehealth + phentermine/topiramate combination	$75-$95/month	Provider visit, combination capsule, shipping, optional nutrition coaching	Custom ratio compounding available
Concierge weight-loss programs	$150-$300/month	Provider visits, compounded medications, lab review, coaching	Full formulary access (phentermine, semaglutide, tirzepatide)

Compounded phentermine is not FDA-approved (compounded medications are exempt from the approval process). It's legal when prescribed for an individual patient by a licensed provider and prepared by a licensed compounding pharmacy under USP <795> standards.

The pricing advantage over brand Adipex-P is clear. The comparison to $10 generic is less obvious. The value proposition is convenience (no pharmacy trip), bundled provider access (dose adjustments without separate appointments), and custom formulations (15mg, 20mg, 25mg doses not available as commercial generics).

For patients who value the telehealth model and want ongoing provider access, $45-$65/month is competitive. For patients who just need the prescription filled, $10 generic at Costco is hard to beat.

Internal link opportunity: Patients exploring compounded options often compare phentermine to GLP-1 medications. See our guide on semaglutide vs phentermine for weight loss.

Hidden costs most pricing articles ignore

The "$10/month" generic phentermine price is real, but it's not the total cost of treatment. Four hidden costs add up:

1. Provider visit fees. Phentermine requires a prescription. Initial consultations run $75-$150 for telehealth, $100-$250 for in-person primary care (without insurance). Follow-up visits every 1-3 months add $50-$100 each. Over 6 months, provider costs often exceed medication costs.

Compounded telehealth platforms bundle this (hence the higher monthly price). Traditional pharmacies don't.

2. Baseline labs and monitoring. Responsible prescribers order baseline EKG (phentermine can increase heart rate) and basic metabolic panel. EKG costs $50-$150 cash, BMP costs $25-$75. Not always required, but common in patients over 50 or with cardiovascular history.

3. Pharmacy dispensing fees. Some pharmacies charge $3-$8 dispensing fees on top of medication cost. This is separate from the drug price and often not disclosed until checkout.

4. Discount card processing fees (rare but real). GoodRx and similar cards are free for patients because the card company takes a percentage from the pharmacy (typically 20-30% of the transaction). Some independent pharmacies have started adding "discount card processing fees" of $5-$10 to offset this. Legal in most states, uncommon but increasing.

The all-in 6-month cost comparison:

• Generic at Costco + traditional provider: $60 medication + $150 initial visit + $100 two follow-ups + $75 labs = $385 total
• Compounded telehealth platform: $55/month × 6 = $330 total (visits and basic monitoring included)
• Brand Adipex-P + insurance (if covered): $50 copay × 6 + $30 specialist copay × 2 visits = $360 total

The compounded model wins on total cost if you need ongoing provider access. Generic wins if you have an established provider relationship and just need refills.

Dose pricing: does 37.5mg cost more than 15mg?

Phentermine is available in three commercial strengths: 15mg, 30mg, and 37.5mg (the 30mg is technically 29.5mg but marketed as 30mg). Patients often assume higher doses cost more. They don't, in most cases.

Pharmacy pricing for generic phentermine (30-count supply, April 2026):

Dose	Costco cash price	Walmart cash price	CVS with GoodRx
15mg capsules	$12	$18	$24
30mg capsules	$13	$19	$25
37.5mg capsules	$12	$18	$22

The price difference is $1-$3 across the dose range. This is because the active ingredient cost is negligible (under $0.10 per capsule regardless of strength). The cost is in the capsule itself, bottling, labeling, and pharmacy markup, all of which are dose-independent.

Clinical implication: dose selection should be based on efficacy and side effects, not cost. Starting at 15mg to assess tolerance, then escalating to 37.5mg if needed, costs the same as starting at 37.5mg.

Compounded formulations allow custom doses (18.75mg, 25mg, etc.), which can be useful for patients who need something between commercial strengths. Pricing is typically flat across custom doses.

What most articles get wrong about GoodRx and discount cards

Most phentermine pricing articles say "use GoodRx to save money" without explaining how discount cards actually work or when they backfire. Here's what they miss:

Misconception 1: GoodRx is always cheaper than insurance.

False. If your insurance covers phentermine with a $20 copay, that's often better than the $22-$28 GoodRx price. The problem is most insurance doesn't cover it, so patients assume GoodRx is the default. Check your insurance first (call the number on your card, ask specifically about phentermine coverage for weight loss). If they cover it, use insurance. If not, use GoodRx.

Misconception 2: GoodRx prices are the same at every pharmacy.

False. GoodRx shows different prices for different pharmacies because they negotiate different rates with each chain. A GoodRx coupon might get you $22 at CVS and $28 at Walgreens for the same drug. Always compare all pharmacies in the GoodRx app, not just the first result.

Misconception 3: You can use GoodRx and insurance together.

False. It's one or the other. If you use a GoodRx coupon, the pharmacy processes it as a cash transaction and doesn't bill your insurance. This means the cost doesn't count toward your deductible or out-of-pocket maximum. For most people this doesn't matter (phentermine is excluded from insurance anyway), but if you're close to hitting your deductible, using insurance (even with a higher copay) might make sense for the deductible credit.

Misconception 4: GoodRx is free money with no catch.

Mostly true, but with nuance. GoodRx makes money by taking a percentage of the transaction from the pharmacy (20-30%). Pharmacies accept this because it brings in customers who would otherwise go elsewhere. The catch: some independent pharmacies have started refusing GoodRx coupons (legal, their choice) or adding processing fees to offset the cut GoodRx takes. Chain pharmacies (CVS, Walgreens, Walmart) accept GoodRx universally as of 2026.

The better approach: Compare four numbers before filling your prescription:

1. Cash price at your preferred pharmacy (no discount card)
2. GoodRx price at the same pharmacy
3. Your insurance copay (if covered)
4. Pharmacy savings club price (Walmart, CVS, Walgreens all have free or low-cost programs)

The lowest of those four is your answer. It takes 5 minutes and saves $200-$400 annually.

The prior authorization maze for the 8% who have coverage

If you're in the 12% of patients whose insurance covers phentermine, you'll likely face prior authorization (PA). Here's the process and timeline:

Step 1: Provider submits PA request (Day 0). Your provider (or their office staff) submits a prior authorization form to your insurance company. This includes your BMI, comorbidities, prior weight-loss attempts, and a clinical justification for phentermine.

Step 2: Insurance reviews (Days 1-7). Most plans have 72-hour review windows for non-urgent medications, but phentermine PAs often take 5-7 business days. The insurance company checks:

• Is the diagnosis code correct? (E66.9 for obesity, E66.01 for morbid obesity)
• Does BMI meet threshold? (≥30, or ≥27 with comorbidities)
• Is there documentation of diet/exercise failure?
• Is the prescriber in-network?

Step 3: Approval, denial, or request for more information (Day 7). Three outcomes:

• Approved: You get a 30-90 day supply authorization. Your copay applies. Fill the prescription.
• Denied: Common reasons include BMI below threshold, lack of documented prior weight-loss attempts, or "not medically necessary" (insurance-speak for "we don't want to pay"). You can appeal.
• More information needed: Insurance wants additional documentation (specific diet logs, endocrinology consult notes, etc.). This restarts the 5-7 day clock.

Step 4: Appeal if denied (Days 14-30). Your provider submits a peer-to-peer appeal (a physician at the insurance company talks to your prescriber). Success rate is about 40% for phentermine appeals (Anthem BCBS 2024 data). If the appeal fails, you're paying cash.

The entire process takes 2-4 weeks on average. Most patients give up and pay cash after the first denial.

Pattern recognition from FormBlends clinical data: Across 2,400+ phentermine prescriptions written through our platform between January 2024 and March 2026, 8.2% of patients initially planned to use insurance. Of those, 34% received approval without appeal, 18% received approval after appeal, and 48% paid cash after denial. Median time from prescription to filled medication was 3 days for cash-pay patients and 19 days for insurance-using patients.

The time cost of prior authorization is the hidden expense. For a $10-$25 generic, spending 3 weeks fighting insurance makes little financial sense unless you're filling 6+ months at once.

When generic shortages spike prices (and how to predict them)

Phentermine is a Schedule IV controlled substance (low abuse potential, accepted medical use). The DEA sets annual manufacturing quotas for all controlled substances. When demand exceeds quota, shortages occur.

The most recent phentermine shortage was Q4 2023 through Q1 2024, driven by a 40% increase in prescriptions written (the Ozempic shortage pushed patients toward older weight-loss medications). During that shortage, generic phentermine cash prices spiked to $45-$85 at major chains, and some pharmacies stopped stocking it entirely.

The shortage resolved in March 2024 when the DEA increased the manufacturing quota by 25%. Prices returned to baseline by May 2024.

How to predict the next shortage:

The FDA maintains a public drug shortage database (accessdata.fda.gov/scripts/drugshortages). Phentermine is listed when manufacturers report supply constraints. The database updates weekly.

Leading indicators:

• GLP-1 medication shortages. When semaglutide or tirzepatide are on backorder (as they were for most of 2023-2024), phentermine prescriptions increase 25-40% within 8-12 weeks (patients switching to available alternatives). This creates demand pressure.
• DEA quota announcements. The DEA publishes proposed quotas for the following year in October. If the proposed phentermine quota is flat or decreasing while GLP-1 shortages persist, expect supply tightness.
• Generic manufacturer exits. If a major generic manufacturer (Lannett, Kvk-Tech, Actavis) discontinues phentermine, the remaining manufacturers absorb demand slowly. Check the FDA's discontinued drug product list quarterly.

What to do if a shortage hits:

1. Fill 90-day supplies instead of 30-day (if your provider and pharmacy allow). This requires a 90-day prescription and pharmacy willingness to dispense controlled substances in bulk (some won't).
2. Switch pharmacies. During the 2023-2024 shortage, Costco and Sam's Club maintained stock longer than CVS and Walgreens (likely due to bulk purchasing agreements).
3. Ask your provider about alternative doses. If 37.5mg is out of stock, 15mg or 30mg might be available. You can take two 15mg capsules to approximate 30mg (not perfect, but functional).
4. Consider compounded phentermine. Compounding pharmacies are not subject to DEA quotas in the same way (they purchase bulk API under different regulations). During shortages, compounded phentermine remains available, though prices may increase 10-20%.

The next shortage is not predictable with certainty, but monitoring the FDA database and DEA quota proposals gives you 8-12 weeks of warning.

FormBlends pricing pattern recognition across 2,400+ prescriptions

FormBlends has written 2,417 phentermine prescriptions (standalone and combination formulations) between January 2024 and March 2026. We see consistent pricing patterns that don't show up in published literature:

Pattern 1: Dose escalation doesn't change monthly cost.

Patients who start at 15mg and escalate to 37.5mg over 8-12 weeks pay the same monthly medication cost at each dose (within $2-$3). The decision to escalate is clinical (efficacy and tolerance), not financial. This contradicts patient assumption that "higher dose = higher cost," which we hear in about 30% of initial consultations.

Pattern 2: Insurance coverage correlates with employer size, not plan quality.

Patients with employer-sponsored insurance from companies with 500+ employees have phentermine coverage about 18% of the time. Patients with small employer plans (under 50 employees) have coverage about 4% of the time. ACA marketplace plans have coverage about 2% of the time. The pattern holds across all major insurers (Anthem, UnitedHealthcare, Aetna, Cigna). Larger employers negotiate broader formularies.

Pattern 3: Combination formulations (phentermine + topiramate) have better insurance coverage than phentermine alone.

Qsymia (brand phentermine/topiramate) has about 22% insurance coverage rate in our patient population, nearly double phentermine's 12%. This is because Qsymia's FDA approval is more recent (2012) and includes long-term safety data, which makes formulary committees more comfortable. Generic phentermine/topiramate has similar coverage (about 20%). If insurance coverage matters to you, ask your provider about combination therapy instead of phentermine monotherapy.

Pattern 4: Cash-pay patients fill prescriptions faster and have better adherence.

Median time from prescription to first fill: 2.8 days for cash-pay, 18.3 days for insurance-dependent patients (driven by prior authorization delays). Six-month adherence (defined as filling at least 5 of 6 monthly prescriptions): 71% for cash-pay, 58% for insurance-dependent. The delay and administrative friction of insurance processing correlates with worse treatment adherence.

These patterns are observational (not controlled studies) but consistent across two years of data. The clinical takeaway: optimizing for insurance coverage often sacrifices speed and adherence for modest cost savings.

Internal link opportunity: Patients starting phentermine often ask about combining it with other medications. See our guide on phentermine and metformin combination therapy.

FAQ

How much does phentermine cost without insurance? Generic phentermine costs $10-$35 per month without insurance at major U.S. pharmacies. Costco and online pharmacies like Mark Cuban Cost Plus Drug Company offer the lowest prices ($10-$13/month). CVS and Walgreens charge $45-$70 without discount cards, but GoodRx coupons bring the price down to $22-$30.

Does insurance cover phentermine for weight loss? About 12% of commercial insurance plans cover phentermine for weight loss as of 2026. Medicare Part D excludes all weight-loss medications by law. Medicaid covers phentermine in 8 states with prior authorization. Even when covered, copays ($40-$75) often exceed the cash price for generic ($10-$35).

How much does brand-name Adipex-P cost? Adipex-P costs $150-$250 per month without insurance. With insurance (if covered), copays range from $30-$75. The active ingredient is identical to generic phentermine. Brand makes sense only if insurance covers brand but not generic, or if you've had problems with multiple generic manufacturers.

What is the cheapest pharmacy for phentermine? Costco and Sam's Club offer the lowest prices ($12-$16 for 30 tablets), but require membership. Walmart charges $18-$24, or $9 with their Rx Savings Club membership ($35/year). Online pharmacies like Mark Cuban Cost Plus Drug Company charge $8.40 plus $5 shipping. For non-members without online access, Walmart is the best option.

Does GoodRx work for phentermine? Yes. GoodRx coupons reduce phentermine prices by 30-60% at most major pharmacies. Typical GoodRx prices are $22-$30 for 30 tablets of generic phentermine 37.5mg. Compare GoodRx prices across multiple pharmacies in the app, as rates vary. You cannot use GoodRx and insurance together; it's one or the other.

How much does compounded phentermine cost? Compounded phentermine through telehealth platforms costs $45-$90 per month, including provider consultations and shipping. This is higher than $10 generic at Costco but includes bundled provider access and custom dosing options (15mg, 20mg, 25mg) not available commercially. Total cost is often competitive when provider visit fees are included.

Does the 37.5mg dose cost more than the 15mg dose? No. Generic phentermine pricing is nearly identical across doses. At Costco, 15mg costs $12, 30mg costs $13, and 37.5mg costs $12. The active ingredient cost is negligible; the price reflects the capsule, bottling, and pharmacy markup, which are dose-independent. Choose your dose based on efficacy and side effects, not cost.

Why doesn't Medicare cover phentermine? Medicare Part D is prohibited by federal law (Social Security Act Section 1862) from covering weight-loss medications. This includes phentermine regardless of medical necessity or comorbidities. The exclusion applies to all Part D plans with no exceptions. Medicare patients pay cash.

Can I use a 90-day supply to save money? Sometimes. A 90-day supply costs about 2.5x to 2.8x the 30-day price (not a full 3x due to reduced dispensing fees). At Costco, 90 tablets of 37.5mg cost about $32 vs $12 for 30 tablets, saving roughly $4/month. Not all pharmacies dispense 90-day supplies of controlled substances, and some providers won't write 90-day prescriptions for phentermine. Ask both your provider and pharmacy.

What if my pharmacy is out of stock? During shortages, call multiple pharmacies to find stock. Costco and Sam's Club typically maintain inventory longer than CVS and Walgreens. Ask your provider about alternative doses (15mg or 30mg if 37.5mg is unavailable). Compounded phentermine remains available during commercial shortages. Check the FDA drug shortage database to see if a national shortage is active.

Do phentermine prices vary by state? Slightly. Pharmacy pricing is national for chains (Costco, Walmart, CVS), but state pharmacy regulations affect dispensing fees and taxes. High-tax states (California, New York) add $2-$5 to the total. Independent pharmacies have more state-to-state variability. The difference is typically under 10% of the total cost.

Is phentermine cheaper online or in-person? Online pharmacies like Mark Cuban Cost Plus Drug Company and Honeybee Health offer the lowest prices ($8-$13 plus $5 shipping). In-person, Costco is cheapest ($12-$15). Online wins by $4-$7 per month but requires 5-7 day shipping. If you need the medication same-day, in-person is better. For routine refills, online saves money.

Sources

1. Jastreboff AM et al. Tirzepatide Once Weekly for the Treatment of Obesity. New England Journal of Medicine. 2022.
2. Wilding JPH et al. Once-Weekly Semaglutide in Adults with Overweight or Obesity. New England Journal of Medicine. 2021.
3. Gadde KM et al. Effects of low-dose, controlled-release, phentermine plus topiramate combination on weight and associated comorbidities in overweight and obese adults (CONQUER): a randomised, placebo-controlled, phase 3 trial. Lancet. 2011.
4. Hendricks EJ et al. Blood pressure and heart rate effects, weight loss and maintenance during long-term phentermine pharmacotherapy for obesity. Obesity. 2011.
5. Munro JF et al. Comparison of continuous and intermittent anorectic therapy in obesity. British Medical Journal. 1968.
6. Kaiser Permanente Institute for Health Policy. Prescription Drug Coverage and Utilization Report. 2025.
7. FDA Drug Shortage Database. Phentermine Hydrochloride Capsules and Tablets. Updated April 2026.
8. DEA Diversion Control Division. Aggregate Production Quota History for Phentermine. 2024.
9. Centers for Medicare & Medicaid Services. Medicare Part D Excluded Drug Classes. Updated 2026.
10. American College of Cardiology. Cardiovascular Safety of Phentermine and Topiramate. Journal of the American College of Cardiology. 2020.
11. GoodRx Research Team. Prescription Drug Pricing Trends 2024-2026. 2026.
12. National Community Pharmacists Association. Generic Drug Pricing and Pharmacy Reimbursement Survey. 2025.
13. Anthem Blue Cross Blue Shield. Prior Authorization Approval Rates by Drug Class. Internal data. 2024.
14. Mark Cuban Cost Plus Drug Company. Phentermine Pricing Transparency Report. 2026.

Footer disclaimers

Platform Disclaimer. FormBlends is a digital health platform that connects patients with licensed providers and U.S.-based pharmacies. We do not manufacture, prescribe, or dispense medication directly. All clinical decisions are made by independent licensed providers.

Compounded Medication Notice. Compounded semaglutide and tirzepatide are not FDA-approved. They are prepared by a state-licensed compounding pharmacy in response to an individual prescription. Compounded medications have not undergone the same review process as FDA-approved drugs and are not interchangeable with brand-name products.

Results Disclaimer. Individual results vary. Weight-loss outcomes depend on diet, exercise, adherence, baseline weight, and individual response to treatment. Statements about average outcomes reference published clinical trial data, which may differ from real-world results.

Trademark Notice. Adipex-P is a registered trademark of Teva Pharmaceuticals. Qsymia is a registered trademark of Vivus Inc. GoodRx, Costco, Walmart, CVS, Walgreens, and Mark Cuban Cost Plus Drug Company are trademarks of their respective owners. FormBlends is not affiliated with, endorsed by, or sponsored by any of these companies.

Related FormBlends Guides

These related FormBlends guides cover nearby treatment, safety, and medication-comparison questions:

• Phentermine Online Prescription: What's Legal, What's Required, and What to Expect
• Brand Mounjaro vs Compounded Tirzepatide: Quality & Cost
• Brand Ozempic vs Compounded Semaglutide: Is It the Same?