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Dietary supplement

Formula 1 (Dihydrotase) Ingredients & Drug Interactions

by MuscleMeds

Other (e.g. Tea Bag) Category: Other Combinations
Most serious interaction: Moderate
The interaction bottom line Most serious interaction: Moderate

Formula 1 (Dihydrotase) is a dietary supplement by MuscleMeds with 2 active ingredients. Its ingredients are commonly taken for antioxidant support, skin health and aging, eye health.Based on those ingredients, 766 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Astaxanthin, Saw Palmetto berry lipid extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

HelloPharmacist Scorecard of Formula 1 (Dihydrotase) by MuscleMeds

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

What’s inside

Low disclosure
Ingredient Transparency · database check
Low

Most active ingredients don't disclose an individual amount — you can't tell how much of each you're getting.

Why this rating?
  • The label discloses an exact amount for 0 of its 2 active ingredients.
  • “Dihydrotase” is listed as a grouped ingredient — the label gives one combined amount (800 mg) without saying how much of each component you get.

Formula 1 (Dihydrotase) contains 2 active ingredients: astaxanthin, a carotenoid antioxidant, and saw palmetto berry lipid extract, a plant-derived substance used traditionally for prostate and urinary health. The product also contains inactive ingredients including gelatin, microcrystalline cellulose, magnesium stearate, silica, titanium dioxide, and food colorings (Red 40, Blue 1) as binders, fillers, and capsule material.

Does it work?

Not established
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not established

The graded evidence we hold for these ingredients covers different conditions than the ones this product is marketed for, so there's no established rating for its stated use.

Why this rating?
  • The label markets this product for: testosterone elevation and hormonal support.
  • We looked for evidence on: Male infertility, Sexual desire, Sexual dysfunction, Benign prostatic hyperplasia (BPH), Chronic prostatitis and chronic pelvic pain syndrome (CP/CPPS), Androgen deficiency — and 2 related terms.
  • The closest evidence on file: Saw Palmetto is rated "Possibly Ineffective" for Benign prostatic hyperplasia (BPH) (Natural Medicines).
  • Also on file: Saw Palmetto is rated "Insufficient Reliable Evidence To Rate" for Sexual dysfunction, Chronic prostatitis and chronic pelvic pain syndrome (CP/CPPS), Prostatitis, Sexual desire.
  • Also on file: Astaxanthin is rated "Insufficient Reliable Evidence To Rate" for Male infertility.

The evidence for astaxanthin is insufficient to reliably rate it for age-related cognitive decline, macular degeneration, aging skin, Alzheimer disease, athletic performance, or carpal tunnel syndrome — meaning we don't yet have solid data on whether it works for these purposes. For saw palmetto, the data suggests it may be ineffective for benign prostatic hyperplasia (enlarged prostate) and possibly effective for symptoms following prostate surgery (transurethral resection of the prostate).

Evidence is insufficient for chronic bronchitis, hair loss, and other lower urinary tract symptoms.

The evidence, ingredient by ingredient Astaxanthin Saw Palmetto

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 2 of the 2 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 2 of 2.
  • General safety write-ups exist for 2 of 2.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Astaxanthin is generally well tolerated in studies, though long-term safety data are limited. The most common side effects are abdominal pain, diarrhea, and red-colored stools; higher doses have occasionally caused severe stomach pain.

Saw palmetto is also well tolerated with mild, infrequent, and reversible side effects — most commonly abdominal pain, constipation, decreased libido, diarrhea, dizziness, fatigue, headache, nausea, rhinitis, and vomiting. Rarely, cases of heart rhythm changes and skin reactions (fixed drug eruptions) have been reported.

Neither astaxanthin nor saw palmetto has adequate safety data in pregnancy, so both should be avoided during pregnancy and breastfeeding. Because of possible hormonal effects and lack of safety information, saw palmetto is rated as likely unsafe in pregnancy and should not be used while breastfeeding.

Side effects, ingredient by ingredient Astaxanthin Saw Palmetto

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 2 of the 2 matched ingredients can interact with medications — Saw Palmetto, Astaxanthin.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs.
  • For scale: 767 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Check with your doctor or pharmacist before combining this product with blood thinners or antiplatelet drugs (Moderate risk of increased bleeding), estrogens or contraceptive medications (Moderate risk of reduced effectiveness), or drugs metabolized through the liver pathways CYP3A4 or CYP2B6 (Moderate risk of decreased drug levels). No interactions are documented for astaxanthin in human studies, but lab data suggest theoretical concerns.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.

This product is not recommended during pregnancy or breastfeeding. Before starting, talk with your doctor or pharmacist about whether it's appropriate for you, especially if you take blood thinners, antiplatelet drugs, hormone therapy, or contraceptive medications.

The long-term safety profile is not well established, and effectiveness for most listed uses is unproven.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 2 of 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Dec 23, 2011.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Formula 1 (Dihydrotase), straight from the product label.

Brand MuscleMeds
Net contents 144 Capsule(s)
Market status On market
Date entered into DSLD Dec 23, 2011
DSLD ID 3722
Product type Other Combinations
Supplement form Other (e.g. Tea Bag)
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult Male (18-50 Years)
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Formula 1 (Dihydrotase) by MuscleMeds, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
2 Capsule(s)
Maximum serving Sizes:
2 Capsule(s)
Servings per container
72
IngredientAmount% DV
Astaxanthin0 NP--
Dihydrotase800 mg--
Saw Palmetto berry lipid extract0 NP--

Other ingredients: Gelatin, Microcrystalline Cellulose, Magnesium Stearate, Silica, Titanium Dioxide, Red 40, Blue 1

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Precautions

WARNING: Consult with your physician before using this product. Do not take this product if you have a medical condition including, but not limited to, diabetes, heart disease, psychological disorder, prostate hypertrophy or hormonal abnormalities. Consult with your physician if you are taking anti-depressants, MAO inhibitors or other prescription drugs.

- Keep out of reach of children.

Not intended for use by pregnant or lactating women.

- Do not purchase if seal is broken.

Athletes or anyone else subject to performance enhancement substance testing should consult with their sanctioning organization before use. Use of this product may result in testing positive.

This product should not be used by women or males under the age of 18.

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

DIRECTIONS: Take two capsules in the morning and two capsules in the evening with water.

FDA Disclaimer Statement

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Storage

- Protect from heat, light and moisture.

- Store at 15(0)-30(0)C (59(0)-86(0)F).

General Statements

**Clinically Tested The Dihydrotase complex contained in Methyl ARIMATEST was tested in a doctor-controlled clinical study. Researchers reported that human test subjects showed large elevations in testosterone after only two weeks. Average levels of serum total testosterone increased to over an amazing 10,000 pg/mL.

- Increases Testosterone to over 10,000 pg/mL**

- Lowers DHT**

- Lowers Estrogen**

BONUS SIZE 20% MORE FREE

CLINICALLY TESTED*

Dihydrotase (MyTesterone, US Patent # 6277417) is supplied by Triarco Industries.

DUAL ACTION PHARMADYNAMIC TESTOSTERONE TECHNOLOGY

FORMULA 1 (DIHYDROTASE)

INCREASES TESTOSTERONE TO OVER 10,000 pg/mL*

Methyl ARIMATEST contains two powerful formulas to deliver dynamic results!

Methyl ARIMATEST's dual action two formula design is scientifically engineered to address the necessary biochemical pathways to bigger perpetual increases in testosterone production. Formula 1 (Dihydrotase) capsules deliver a full, clinically tested dose of a potent 5 alpha-reductase inhibitor to help prevent testosterone's conversion to DHT. Formula 2 (7-Arimatase) SubZorb(TM) sub-buccal tablets ensure maximum bio-availability and potency of the powerful anti-aromatase 7-Methoxyflavone to inhibit testosterone's conversion to estrogen.*

Put Methyl ARIMATEST to the test and watch your testosterone levels skyrocket through the roof. Harness the muscle-building power of 10,000 pg/mL of testosterone running through your veins!*

When administered together, Methyl ARIMATEST's advanced Dual Action Pharmadynamic Testosterone Technology shifts the endogenous production of testosterone into overdrive, while stopping its conversion to estrogen and DHT. Methyl ARIMATEST's unique ability to elicit high elevations in testosterone, while simultaneously reducing DHT and estrogen, creates the ideal anabolic hormonal profile for packing on hard, dense muscle mass!*

Brand IP Statement(s)

7-Arimatase(TM): Methylated Anti-Aromatase*

Methyl ARIMATEST(TM) represents a new standard in testosterone optimization with an advanced dual action testosterone technology. Methyl ARIMATEST is the first testosterone optimizer of its kind to provide powerful clinically tested testosterone elevations to over 10,000 pg/mL**, utilizing the clinically tested, potent 5 Alpha-reductase inhibitor Dihydrotase(TM), in combination with the new novel highly bio-available anti-aromatase compound, 7-Arimatase(TM).*

SubZorb(TM) Delivery

Seals/Symbols

MuscleMeds(TM)PERFORMANCE TECHNOLOGIES

See for yourself

Formula 1 (Dihydrotase) by MuscleMeds label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

What’s inside

The Ingredients in Formula 1 (Dihydrotase) by MuscleMeds

These are the 2 active ingredients this product is made of. Select any to open its full monograph.

Serving size2 Capsule(s) Dosage formOther (e.g. Tea Bag) Servings per container72 Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Dihydrotase

800 mg per serving

Other (inactive) ingredients: Gelatin, Microcrystalline Cellulose, Magnesium Stearate, Silica, Titanium Dioxide, Red 40, Blue 1. These complete the product’s ingredient list but are not active constituents.

Interaction report

Formula 1 (Dihydrotase) by MuscleMeds Drug Interactions

Want to check YOUR meds against Formula 1 (Dihydrotase)?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

Go to the checker
766Drugs
766 Moderate

Ingredients driving the most interactions

Each ingredient & the kinds of drugs it affects

For each ingredient in Formula 1 (Dihydrotase) with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.

Astaxanthin2 drug types · 671 drugs

Cytochrome P450 2B6 (Cyp2B6) Substrates

Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP2B6.
In vitro research shows that astaxanthin induces cytochrome CYP2B6 enzyme activity in human hepatocytes. This effect has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 3A4 (Cyp3A4) Substrates

Theoretically, astaxanthin may decrease levels of drugs metabolized by CYP3A4.
In vitro research shows that astaxanthin induces CYP3A4 enzyme activity in human hepatocytes. This effect has not been reported in humans.

Likelihood Possible Evidence D

Saw Palmetto berry lipid extract3 drug types · 174 drugs

Anticoagulant/Antiplatelet Drugs

Saw palmetto might increase the risk of bleeding with anticoagulant or antiplatelet drugs.
Saw palmetto is reported to prolong bleeding time. Theoretically, it might increase the risk of bleeding when used concomitantly with anticoagulant or antiplatelet drugs.

Likelihood Possible Evidence D
Contraceptive Drugs

Saw palmetto might reduce the effectiveness of contraceptive drugs.
Saw palmetto might have antiestrogenic effects. Theoretically, it might interfere with contraceptive drugs taken concomitantly.

Likelihood Possible Evidence B
Estrogens

Saw palmetto might reduce the effectiveness of estrogens.
Saw palmetto might have antiestrogenic effects. Theoretically, it might interfere with estrogens taken concomitantly.

Likelihood Possible Evidence B
The maker

Brand information

Manufacturer and brand details for Formula 1 (Dihydrotase), from the product label.

MuscleMeds

See all MuscleMeds products
Name
MuscleMeds
Street Address
163 E. Main Street, Suite #324
City
Little Falls
State
NJ
ZipCode
07424
Phone Number
1.888.575.7067
Web Address
www.MuscleMedsRx.com
Pharmacist Counseling Corner

Formula 1 (Dihydrotase) by MuscleMeds: Common Questions

Does Formula 1 (Dihydrotase) by MuscleMeds interact with any medications?
Yes. Based on its ingredients, Formula 1 (Dihydrotase) has a known interaction with 766 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Formula 1 (Dihydrotase) contains 2 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Can I take this if I'm on birth control?
Saw palmetto in this product may theoretically reduce how well your contraceptive works. Talk with your doctor or pharmacist before adding this supplement to your birth control regimen — they can advise whether it's safe for you or if monitoring is needed.
What are the most common side effects?
From astaxanthin: abdominal pain, diarrhea, and red-colored stools. From saw palmetto: abdominal pain, constipation, diarrhea, dizziness, fatigue, headache, nausea, and decreased libido. Most are mild and reversible, but higher doses of astaxanthin have occasionally caused severe stomach pain.
Is astaxanthin proven to help with brain aging or memory?
The evidence isn't established yet — we don't have reliable data showing astaxanthin works for age-related cognitive decline or Alzheimer disease. The same goes for anti-aging skin benefits.
Does saw palmetto actually help an enlarged prostate?
The data suggest saw palmetto is likely ineffective for benign prostatic hyperplasia (enlarged prostate). It may be possibly effective for urinary symptoms after prostate surgery, but evidence for other lower urinary tract symptoms is insufficient.
Is this safe to use long-term?
Long-term safety data for astaxanthin are limited. Saw palmetto is generally well tolerated, but because this product hasn't been studied over many years, talk with your doctor or pharmacist about your individual situation if you're thinking of taking it regularly.
Can I take this while pregnant or breastfeeding?
No. Neither astaxanthin nor saw palmetto has adequate safety data in pregnancy or lactation. Both should be avoided — talk with your doctor or pharmacist about safer alternatives if you're pregnant, planning to become pregnant, or breastfeeding.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if Formula 1 (Dihydrotase) is safe with your meds?

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Formula 1 (Dihydrotase) label
Sources

Sources & How We Checked

Formula 1 (Dihydrotase)'s label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 25 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Astaxanthin 3 references
  1. Kupcinskas L, Lafolie P, Lignell A, et al. Efficacy of the natural antioxidant astaxanthin in the treatment of functional dyspepsia in patients with or without Helicobacter pylori infection: A prospective, randomized, double blind, and placebo-controlled
  2. Kistler, A., Liechti, H., Pichard, L., Wolz, E., Oesterhelt, G., Hayes, A., and Maurel, P. Metabolism and CYP-inducer properties of astaxanthin in man and primary human hepatocytes. Arch.Toxicol. 2002;75(11-12):665-675. PubMed
  3. Choi HD, Youn YK, Shin WG. Positive effects of astaxanthin on lipid profiles and oxidative stress in overweight subjects. Plant Foods Hum Nutr. 2011;66:363-369. PubMed

See these in context on the Astaxanthin monograph →

Saw Palmetto 22 references
  1. Wilt TJ, Ishani A, Stark G, et al. Saw palmetto extracts for treatment of benign prostatic hyperplasia: a systematic review. JAMA 1998;280:1604-9. PubMed
  2. Carraro JC, Raynaud JP, Koch G, et al. Comparison of phytotherapy (Permixon) with finasteride in the treatment of benign prostate hyperplasia: a randomized international study of 1,098 patients. Prostate 1996;29:231-40. DOI
  3. Di Silverio F, D'Eramo G, Lubrano C, et al. Evidence that Serenoa repens extract displays an antiestrogenic activity in prostatic tissue of benign prostatic hypertrophy patients. Eur Urol 1992;21:309-14. PubMed
  4. Stepanov VN, Siniakova LA, Sarrazin B, Raynaud JP. Efficacy and tolerability of the lipidosterolic extract of Serenoa repens (Permixon) in benign prostatic hyperplasia: a double-blind comparison of two dosage regimens. Adv Ther 1999;16:231-41.
  5. Cheema P, El-Mefty O, Jazieh AR. Intraoperative haemorrhage associated with the use of extract of Saw Palmetto herb: a case report and review of literature. J Intern Med 2001;250:167-9. PubMed
  6. Jibrin I, Erinle A, Saidi A, Aliyu ZY. Saw palmetto-induced pancreatitis. South Med J 2006;99:611-2. PubMed
  7. Prager N, Bickett K, French N, Marcovici G. A randomized, double-blind, placebo-controlled trial to determine the effectiveness of botanically derived inhibitors of 5-alpha-reductase in the treatment of androgenetic alopecia. J Altern Complement Med 2002
  8. Avins AL, Bent S, Staccone S, et al. A detailed safety assessment of a saw palmetto extract. Complement Ther Med 2008;16:147-54. PubMed
  9. Morgia, G., Mucciardi, G., Gali, A., Madonia, M., Marchese, F., Di, Benedetto A., Romano, G., Bonvissuto, G., Castelli, T., Macchione, L., and Magno, C. Treatment of chronic prostatitis/chronic pelvic pain syndrome category IIIA with Serenoa repens plus
  10. Aliaev, IuG, Vinarov, A. Z., Lokshin, K. L., and Spivak, L. G. [Efficiency and safety of prostamol-Uno in patients with chronic abacterial prostatitis]. Urologiia. 2006;(1):47-50.
  11. Agbabiaka, T. B., Pittler, M. H., Wider, B., and Ernst, E. Serenoa repens (saw palmetto): a systematic review of adverse events. Drug Saf 2009;32(8):637-647. PubMed
  12. Wargo, K. A., Allman, E., and Ibrahim, F. A possible case of saw palmetto-induced pancreatitis. South.Med.J. 2010;103(7):683-685. PubMed
  13. Lapi, F., Gallo, E., Giocaliere, E., Vietri, M., Baronti, R., Pieraccini, G., Tafi, A., Menniti-Ippolito, F., Mugelli, A., Firenzuoli, F., and Vannacci, A. Acute liver damage due to Serenoa repens: a case report. Br.J.Clin.Pharmacol. 2010;69(5):558-560.
  14. Mantovani, F. Serenoa repens in benign prostatic hypertrophy: analysis of 2 Italian studies. Minerva Urol.Nefrol. 2010;62(4):335-340.
  15. Hanaka, M., Yoshii, C., Yatera, K., Ito, C., Chojin, Y., Nagata, S., Yamasaki, K., Nishida, C., Kawanami, T., Kawanami, Y., Ishimoto, H., and Mukae, H. [A case of rhabdomyolysis caused by saw palmetto of healthy foods]. J.UOEH. 6-1-2012;34(2):193-199. PubMed
  16. Miroddi, M., Carni, A., Mannucci, C., Moleti, M., Navarra, M., and Calapai, G. Hot flashes in a young girl: a wake-up call concerning Serenoa repens use in children. Pediatrics 2012;130(5):e1374-e1376.
  17. Braeckman J. The extract of Serenoa repens in the treatment of benign prostatic hyperplasia: a multicenter open study. Current Therapeutic Research 1994;55(7):776-785. DOI
  18. Jipescu D, Patel A, Bohra H, Pientka A. Rare case of saw palmetto induced heart block. JACC 2017;69(11) supplement:2310.
  19. Morabito P, Miroddi M, Giovinazzo S, Spina E, Calapai G. Serenoa repens as an endocrine disruptor in a 10-year-Old young girl: a new case report. Pharmacology. 2015;96(1-2):41-3. doi: 10.1159/000431327.
  20. Gammoudi R, Ameur K, Ouni B, et al. Fixed drug eruption to Serenoa repens: first case report and consideration of the use of herbal medicine. Dermatol Ther 2020 Aug 29:e14247.
  21. Paulis G, Paulis A, Perletti G. Serenoa repens and its effects on male sexual function. A systematic review and meta-analysis of clinical trials. Arch Ital Urol Androl 2021;93(4):475-480. PubMed
  22. Venkateswaran S, Declet-Bauzo R, Shodeinde M, Gilford P. Postoperative Retroperitoneal Hematoma: A Case of Saw Palmetto and the Importance of Primary Care Intervention. HCA Healthc J Med 2020;1(5):279-282. PubMed

See these in context on the Saw Palmetto monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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