Menu

Purchase Sarms In Our Online Shop, Next Day Uk & Europe Delivery| provensarms.com

Published Date: January 28, 2021


bodybuilder, six-pack, muscles

The Best SARMs in 2020: Is Taking SARMs for BodyBuilding Bad for You?

Look:
  1. Ostarine MK-2866
  2. Testolone RAD-140
  3. Lingadrol LGD-4033
  4. YK-11
  5. Andarine S-4
SARMs represent Selective Androgen Receptor Modulators. These compounds share comparable properties with anabolic steroids however, based on the name, are more selective in how they work. As a receptor modulator, they have set effects on specific tissues or areas.
Comparatively, steroids are notorious for impacting more than muscle growth and efficiency: the risks are obvious.
SARMs are a relatively unique muscle-building alternative, but that’s not to state they don’t have a strong base of advocates already.
We delve into the science behind SARMs and review five popular varieties to reveal what each can do for you. We investigate how they work with fact-based research based upon genuine research studies– no unproven claims here.

The Very Best SARMs in 2020

1. Ostarine MK-2866– Best SARM Overall

Ostarine MK-2866 is likewise known as Ostarine, Enobosarm, or GTx-024. This SARM, developed by GTx, Inc. imitates the action of testosterone. 2]

How it Functions

Ostarine replicates testosterone’s effects: it was originally designed to treat conditions triggered, or aggravated, by testosterone deficiencies. Similar to all SARMs, it binds to androgen receptors throughout your body [3]
There’s no qualified research study on this compound for bodybuilding, it has actually shown success in the muscle-building department. 5]
MK-2866 can get results in doses as low as one milligram. Per one study on cancer clients suffering from muscle wasting, stair-climbing power improved significantly, with higher enhancements seen in those taking a higher dosage [6]
Animal trials show that Ostarine may likewise increase bone density and prevent bone loss. 8]

Ostarine MK-2866 Negative Effects

Ostarine MK-2866 is non-steroidal; it isn’t really testosterone, although it works. Adverse effects are minimal compared to conventional androgenic agents [9]
You may experience moderate stomach discomfort, nausea, diarrhea, or constipation. Pregnant and breastfeeding ladies should avoid Ostarine. These are fragile times, keep things natural.

Bottom Line

Testosterone is the driving force behind lots of helpful body processes, from muscle building to increased physical function. Given that Ostarine selectively simulates testosterone’s abilities, it’s easily among the very best SARMs for efficiency improvement and muscle gain.

2. Testolone RAD-140– Best for Expanding

Testolone RAD-140 was initially established to target conditions like breast cancer and muscle wasting. It is one of the most powerful SARMs, making it an ideal prospect if you want to bulk up and construct muscle fast [10]

How it Works

RAD-140 exhibits a remarkable affinity for androgen-receptor cells in the body. It’s likewise incredibly selective compared to other SARMs; it doesn’t affect other steroid-hormone receptors.
SARMs are already discerning by definition, but research study confirms that RAD-140 binds especially well to the androgen receptors in bone and muscle. It blocks androgen receptors in the prostate and breasts, decreasing the threat of prostate and breast cancer [12]
RAD-140 is a safer treatment option to combat muscle wasting than testosterone replacement therapy and anabolic steroids. Both can intensify or provoke cancers due to the overstimulation of androgen receptors [13]
Testolone might likewise increase mental capacity. Early trials found that it can decrease brain cell death brought on by aging. Anabolic steroid usage is connected with increased brain irregularities, making this SARM much more appealing [14] [15]
Trials reveal it might even reduce breast cancer. Its boosted selectivity likewise suggests that, for females, the risk of other unpleasant androgenic results such as hair development is low [16]

Testolone RAD-140 Adverse Effects

Anecdotal reports from RAD-140 users warn of nausea for first-time users. Other prospective negative impacts include insomnia or sleepiness– experiences vary depending on the dosage and cycle length.

Bottom Line

If you’re in a bulking cycle, Testolone’s swift muscle-building capabilities are among the best. As one of the most discriminating SARMs, it’s also excellent for targeting muscle and bone without impacting anything else.

3. Lingadrol LGD-4033– Best for Women

Lingadrol, or LGD-4033, is a SARM utilized to fight bone and muscle loss, resulting from osteoporosis. It is one of the best SARMs for females since they are more susceptible to bone illness.

How it Functions

LGD-4033 boasts high selectivity when it bonds to androgen-receptive cells in the body, selecting those in bones and muscles. It also works promptly: a 21-day study on healthy men discovered all participants took pleasure in increased lean body mass [18]
Within this short duration, participants likewise revealed increased leg press strength and stair-climbing power.
Does ranged from simply 0.1-1mg, demonstrating its ultra-high potency. Given that ladies naturally construct muscle at a slower rate than males, due to lower testosterone levels, LGD-4033 could be an excellent technique to kickstart muscle gain [19]
Animal trials verify recommended that Lingadrol might be proficient at favorably affecting bones and muscles without hindering sensitive areas, like the prostate. Results consisted of increased bone mass and strength, as well as improved sexual function [20]

Lingadrol Side Impacts

Some users might experience stomach trouble, such as queasiness or abdominal pain. Bear in mind that variables such as your diet plan and how long you choose to cycle the compound impact its effects.

Bottom Line

Because the loss of bone density is more typical, and tends to begin at an earlier age, in females than men, we designate it as the best SARM for women. Nonetheless, the powerful capacity of LGD-4033 to build lean muscle in the body makes it a feasible choice for a lot of bodybuilders [ 21]


4. YK-11– Best for Quick Gains

Aside from the usual SARMs qualities, YK-11 stands apart because it prevents myostatin. This substance inhibits cell development and differentiation in muscles. That ability makes it an optimum SARM if you want fast development.

How it Functions

This SARM has limited research available, however what exists is promising. It suppresses myostatin, a natural substance in the body that negatively impacts muscle development. Myostatin is one of the offenders behind muscle squandering in senior or chronically ill individuals [22] [23]
Suppressing myostatin can not just prevent muscle atrophy and loss, but it can likewise improve growth too. Research study supports that strength gains are another positive effect of limiting myostatin [24]
At the exact same time, YK-11 boosts follistatin expression, a handy protein that contributes to muscle fertility, development, and metabolism. 26]

YK-11 Negative Effects

Secondhand reports from YK-11 users mention joint and tendon pain as a possible negative effects. Because there’s minimal clinical research about it, pregnant and breastfeeding females should avoid it.

Bottom Line

The myostatin-inhibiting action of this SARM deserves a try for the beginner that desires fast results. Experienced bodybuilders can likewise utilize it to speed up the bulking process.

5. Andarine S-4– Best for Cutting Fat

Andarine is a selective androgen receptor that ranks among the best SARMs for cutting. Like Ostarine, it’s a product of GTx, Inc. It was established to fight osteoporosis and muscle wasting– so you can picture what it can do for a healthy person.
Apart from enhancing muscle mass, S-4 can help with fat loss too. Bigger muscles, combined with boosted weight loss, must help you attain that desired “cut” appearance. If you want to shift through the difficult cutting cycle without over-supplementing, Andarine could be a choice [ 27]
Err on the side of care and prevent supplementing with Andarine while pregnant and breastfeeding. Increased loss of hair is a possible effect, although keep in mind that reports of Andarine negative effects vary significantly.

SARMs are already critical by definition, but research study verifies that RAD-140 binds particularly well to the androgen receptors in bone and muscle. Lingadrol, or LGD-4033, is a SARM utilized to fight bone and muscle loss, resulting from osteoporosis. It is one of the finest SARMs for women because they are more vulnerable to bone disease. Since the loss of bone density is more typical, and tends to start at an earlier age, in ladies than men, we designate it as the finest SARM for ladies. Andarine is a selective androgen receptor that ranks among the finest SARMs for cutting.


SARMs Purchasing Guide and Frequently Asked Questions

Let’s discuss what SARMs can do for you, and what you should understand when it worries purchasing and utilizing SARMS.

Are SARMs Legal?

05-Are-SARMs-Legal

Leisure SARMs within dietary supplements exist in rather grey areas: they’re offered in dietary supplements, and they’re also a DEA-controlled substance– in the exact same classification as steroids [28]
Professional athletes looking for to contend expertly must know The World Anti-Doping Firm (WADA) forbids SARMs [29]

Are SARMs Safe?

Using SARMs recreationally for bodybuilding is not an FDA-approved usage, implying safety is not guaranteed. Research study is restricted regarding how they impact the body long-lasting, and there are no scientific investigations into utilizing them in cycles recreationally [30]
Dietary supplements that aren’t FDA-approved are not controlled, consisting of products claiming to consist of SARMs. The component list could be misleading, mentioning nonexistent or incorrect amounts of the SARM in question [31]

Can SARMs Make You More Powerful?

Yes, particular SARMs can improve your strength, especially when integrated with extensive exercises. A lot of studies validate that SARMs increase individuals’ physical function (which includes strength).

Where Can You Discover SARMs for Sale?

Different dietary supplements targeted at bodybuilders and physical fitness enthusiasts declare to consist of SARMs. You need to take these labels with a grain of salt, specifically if the brand name isn’t respectable.
Try to find highly-reviewed vendors that are widely known. It isn’t a good idea to acquire SARMs from dodgy places or personal people, no matter what strength or quantity they promote.

How and When Should You Use SARMs?

You ought to only use SARMs if you’re otherwise healthy with no pre-existing conditions. Ladies need to avoid trying to develop muscle mass with these compounds while breastfeeding or pregnant.
SARMs are typically taken in cycles of two to three months at doses of 5 to 15 milligrams each day. They’re also offered as pills or tablets. Personal elements like your objectives (e.g., bulking vs cutting) will also contribute in how you take them.
The perfect cycle and dose daily will depend upon the substance you’re taking: 8 weeks is quite basic. Some bodybuilders reduce the cycle to 4 weeks or extend it to a 12-week cycle.
As a rule, you should begin your first cycle with a low dosage to see how you react and stick to a much shorter cycle of 4 to 8 weeks. For example, Testolone is extremely powerful even in small dosages, so you do not wish to go overboard with how much you take.
You must never ever press your cycle to beyond 12 weeks. Prevent upping your dose per day in big increments: if you decide to increase it, go with no more than 5mg.
If you experience serious adverse effects, cut your cycle short, and contact your doctor. SARMs might not be as dangerous as regular steroids, but that doesn’t make them 100-percent safe.

Should You Use SARMs for Bodybuilding?

There are plenty of success stories from bodybuilders using SARMs in cycles to increase muscle mass and performance. It depends on you to weigh out the dangers and benefits of taking these compounds.
SARMs do have far fewer nasty side effects than standard bodybuilding supplements. Still, you ought to exercise caution and screen yourself carefully when you cycle.

What Are the Benefits of Taking SARMs?

SARMs use a number of the very same perks as conventional steroids and testosterone supplements. They can enhance muscle mass, strength, efficiency, and even brain function. Some can assist in cutting fat and increasing bone density.
These substances are not devoid of side effects, many of the dreaded signs bodybuilders fear from anabolic steroids, and testosterone supplements won’t follow.
Anabolic steroids can likewise trigger opposite-sex attributes to manifest, e.g. body hair development in women or breasts in guys. Both genders likewise experience increased cancer danger, hostility, acne, loss of hair, and more.
What Are the Adverse Effects of SARMs?
Adverse effects differ depending upon the kind of SARM, your cycle, dose, and overall health. Most studies checking out SARMs for medical applications illustrate minimal unfavorable results.

Do SARMs Lower Testosterone Levels?

Yes, a selective androgen receptor can reduce testosterone levels at higher dosages, depending on kind of SARM.

Should Ladies Take SARMs?

SARMs are an attractive option to anabolic steroids. Women benefit huge, as the negative consequences of conventional steroids or testosterone supplementation in women are frequently severe.
Some SARMs are even considered promising in the treatment of muscle waste, breast cancer, and other conditions in ladies.

Is MK 677 a SARM?

MK 677, or Ibutamoren, is frequently thought to belong to the family of SARMs, but it doesn’t. It regulates growth hormone and promotes ghrelin, the hormonal agent responsible for appetite.
These homes make MK 677 an interesting candidate for bodybuilders seeking to bulk up, but its not a SARM.

Assembling

SARMs can be exceptional aids to accomplish your bodybuilding objectives. Still, it’s important to avoid abusing them and use good sense when selecting the very best SARMs for you.
Just like any synthetic substance, the capacity for unfavorable effects is there. The danger is substantially lower than with other options like testosterone, however it still exists.
Bear in mind that no official regulatory body screens SARMs. If you pick to supplement with these products, look for producers with a good credibility and reviews.

Referrals

  1. “Enobosarm.” National Center for Biotechnology Info. PubChem Compound Database, U.S. National Library of Medicine, pubchem.ncbi.nlm.nih.gov/ compound/Enobosarm.
  2. Pasiakos, Stefan M, et al. “Impacts of Testosterone Supplementation on Body Structure and Lower-Body Muscle Function during Extreme Exercise- and Diet-Induced Energy Deficit: A Proof-of-Concept, Single Centre, Randomised, Double-Blind, Controlled Trial.” EBioMedicine, Elsevier, Aug. 2019, www.ncbi.nlm.nih.gov/pmc/articles/PMC6711889/.
  3. The Clinical Biochemist. Evaluations, The Australian Association of Medical Biochemists, Feb. 2016, www.ncbi.nlm.nih.gov/pmc/articles/PMC4810760/.
  4. Dalton, James T, et al. “The Selective Androgen Receptor Modulator GTx-024 (Enobosarm) Improves Lean Body Mass and Physical Function in Healthy Senior Men and Postmenopausal Ladies: Outcomes of a Double-Blind, Placebo-Controlled Stage II Trial.” Journal of Cachexia, Sarcopenia and Muscle, Springer-Verlag, Sept. 2011, www.ncbi.nlm.nih.gov/pmc/articles/PMC3177038/.
  5. Papanicolaou DA; Ather SN; Zhu H; Zhou Y; Lutkiewicz J; Scott BB; Chandler J; “A Stage IIA Randomized, Placebo-Controlled Scientific Trial to Research Study the Efficacy and Security of the Selective Androgen Receptor Modulator (SARM), MK-0773 in Female Individuals with Sarcopenia.” The Journal of Nutrition, Health & Aging, U.S. National Library of Medication, pubmed.ncbi.nlm.nih.gov/ 23732550/.
  6. “PubMed Central Image Viewer.” National Center for Biotechnology Details, U.S. National Library of Medication, www.ncbi.nlm.nih.gov/core/lw/2.0/html/tileshop_pmc/tileshop_pmc_inline.html?title=Click on image to zoom.
  7. Hoffmann DB; Komrakova M; Pflug S; von Oertzen M; Saul D; Weiser L; Walde TA; Wassmann M; Schilling AF; Lehmann W; Sehmisch S; “Evaluation of Ostarine as a Selective Androgen Receptor Modulator in a Rat Design of Postmenopausal Osteoporosis.” Journal of Bone and Mineral Metabolic Process, U.S. National Library of Medication, pubmed.ncbi.nlm.nih.gov/ 29785666/.
  8. Bengtsson, Victor, et al. “Story Evaluation of Injuries in Powerlifting with Unique Reference to Their Association to the Squat, Bench Press and Deadlift.” BMJ Open Sport & Exercise Medicine, BMJ Publishing Group, 17 July 2018, www.ncbi.nlm.nih.gov/pmc/articles/PMC6059276/.
  9. Dobs AS; Boccia RV; Croot CC; Gabrail NY; Dalton JT; Hancock ML; Johnston MA; Steiner MS; “Impacts of Enobosarm on Muscle Wasting and Physical Function in Patients with Cancer: a Double-Blind, Randomised Controlled Phase 2 Trial.” The Lancet. Oncology, U.S. National Library of Medication, pubmed.ncbi.nlm.nih.gov/ 23499390/.
  10. “Testolone.” National Center for Biotechnology Information. PubChem Substance Database, U.S. National Library of Medicine, pubchem.ncbi.nlm.nih.gov/ compound/Testolone.
  11. Miller, Chris P, et al. “Design, Synthesis, and Preclinical Characterization of the Selective Androgen Receptor Modulator (SARM) RAD140.” ACS Medicinal Chemistry Letters, American Chemical Society, 2 Dec. 2010, www.ncbi.nlm.nih.gov/pmc/articles/PMC4018048/.
  12. Eisenberg, Michael Louis. “Testosterone Replacement Therapy and Prostate Cancer Occurrence.” The World Journal of Guys’s Health, Korean Society for Sexual Medication and Andrology, Dec. 2015, www.ncbi.nlm.nih.gov/pmc/articles/PMC4709428/.
  13. Salerno, Monica, et al. “Anabolic Androgenic Steroids and Carcinogenicity Concentrating On Leydig Cell: a Literature Evaluation.” Oncotarget, Effect Journals LLC, 10 Apr. 2018, www.ncbi.nlm.nih.gov/pmc/articles/PMC5922407/.
  14. Jayaraman A; Christensen A; Moser VA; Vest RS; Miller CP; Hattersley G; Pike CJ; “Selective Androgen Receptor Modulator RAD140 Is Neuroprotective in Cultured Nerve Cells and Kainate-Lesioned Male Rats.” Endocrinology, U.S. National Library of Medicine, pubmed.ncbi.nlm.nih.gov/ 24428527/.
  15. Kaufman, Marc J, et al. “Brain and Cognition Abnormalities in Long-Term Anabolic-Androgenic Steroid Users.” Alcohol And Drug Reliance, U.S. National Library of Medication, 1 July 2015, www.ncbi.nlm.nih.gov/pmc/articles/PMC4458166/.
  16. Yu Z; He S; Wang D; Patel HK; Miller CP; Brown JL; Hattersley G; Saeh JC; “Selective Androgen Receptor Modulator RAD140 Prevents the Growth of Androgen/Estrogen Receptor-Positive Breast Cancer Models with a Distinct System of Action.” Medical Cancer Research: an Official Journal of the American Association for Cancer Research, U.S. National Library of Medication, pubmed.ncbi.nlm.nih.gov/ 28974548/.
  17. “4-((R)-2-((R)-2,2,2-Trifluoro-1-Hydroxyethyl)Pyrrolidin-1-Yl)-2-(Trifluoromethyl)Benzonitrile.” National Center for Biotechnology Information. PubChem Compound Database, U.S. National Library of Medicine, pubchem.ncbi.nlm.nih.gov/ compound/lgd -4033.
  18. Basaria, Shehzad, et al. “The Security, Pharmacokinetics, and Results of LGD-4033, an Unique Nonsteroidal Oral, Selective Androgen Receptor Modulator, in Healthy Boy.” The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences, Oxford University Press, Jan. 2013, www.ncbi.nlm.nih.gov/pmc/articles/PMC4111291/.
  19. Haizlip, K M, et al. “Sex-Based Distinctions in Skeletal Muscle Kinetics and Fiber-Type Composition.” Physiology (Bethesda, Md.), American Physiological Society, Jan. 2015, www.ncbi.nlm.nih.gov/pmc/articles/PMC4285578/.
  20. Miner JN; Chang W; Chapman MS; Finn PD; Hong MH; López FJ; Marschke KB; Rosen J; Schrader W; Turner R; van Oeveren A; Viveros H; Zhi L; Negro-Vilar A; “An Orally Active Selective Androgen Receptor Modulator Is Efficacious on Sex, bone, and muscle Function with Lowered Impact on Prostate.” Endocrinology, U.S. National Library of Medication, pubmed.ncbi.nlm.nih.gov/ 17023534/.
  21. Alswat, Khaled A. “Gender Disparities in Osteoporosis.” Journal of Scientific Medication Research, Elmer Press, May 2017, www.ncbi.nlm.nih.gov/pmc/articles/PMC5380170/.
  22. Piper T; Dib J; Putz M; Fusshöller G; Pop V; Lagojda A; Kuehne D; Geyer H; Schänzer W; Thevis M; “Studies on the in Vivo Metabolism of the SARM YK11: Identification and Characterization of Metabolites Potentially Useful for Doping Controls.” Drug Testing and Analysis, U.S. National Library of Medication, pubmed.ncbi.nlm.nih.gov/ 30379415/.
  23. Carnac, Gilles, et al. “Myostatin in the Pathophysiology of Skeletal Muscle.” Existing Genomics, Bentham Science Publishers Ltd., Nov. 2007, www.ncbi.nlm.nih.gov/pmc/articles/PMC2647158/.
  24. Tsuchida, K. “Myostatin Inhibition by a Follistatin-Derived Peptide Ameliorates the Pathophysiology of Muscular Dystrophy Model Mice.” Acta Myologica: Cardiomyopathies and myopathies: Authorities Journal of the Mediterranean Society of Myology, Pacini Editore HEALTH CLUB, July 2008, www.ncbi.nlm.nih.gov/pmc/articles/PMC2859604/.
  25. Kanno Y; Ota R; Someya K; Kusakabe T; Kato K; Inouye Y; “Selective Androgen Receptor Modulator, YK11, Controls Myogenic Distinction of C2C12 Myoblasts by Follistatin Expression.” Biological & Pharmaceutical Publication, U.S. National Library of Medication, pubmed.ncbi.nlm.nih.gov/ 23995658/.
  26. Kanno Y; Ota R; Someya K; Kusakabe T; Kato K; Inouye Y; “Selective Androgen Receptor Modulator, YK11, Manages Myogenic Differentiation of C2C12 Myoblasts by Follistatin Expression.” Biological & Pharmaceutical Bulletin, U.S. National Library of Medication, pubmed.ncbi.nlm.nih.gov/ 23995658/.
  27. Kearbey JD; Gao W; Narayanan R; Fisher SJ; Wu D; Miller DD; Dalton JT; “Selective Androgen Receptor Modulator (SARM) Treatment Avoids Bone Loss and Lowers Body Fat in Ovariectomized Rats.” Pharmaceutical Research Study, U.S. National Library of Medicine, pubmed.ncbi.nlm.nih.gov/ 17063395/.
  28. Hatch, Orrin G. “S. 2742– 115th Congress (2017-2018): SARMs Control Act of 2018.” Congress.gov, 24 Apr. 2018, www.congress.gov/bill/115th-congress/senate-bill/2742.
  29. “What Is Prohibited.” World Anti-Doping Company, www.wada-ama.org/en/content/what-is-prohibited/search/Sarms.
  30. Commissioner, Workplace of the. “FDA In Brief: FDA Warns versus Using SARMs in Body-Building Products.” U.S. Fda, FDA, www.fda.gov/news-events/fda-brief/fda-brief-fda-warns-against-using-sarms-body-building-products.
  31. Starr, Ranjani R. “Insufficient, Too Late: Inadequate Regulation of Dietary Supplements in the United States.” American Journal of Public Health, American Public Health Association, Mar. 2015, www.ncbi.nlm.nih.gov/pmc/articles/PMC4330859/.
  32. Utilizing SARMs recreationally for bodybuilding is not an FDA-approved use, meaning security is not guaranteed. Dietary supplements that aren’t FDA-approved are not regulated, including products professing to consist of SARMs. SARMs are usually taken in cycles of 2 to three months at doses of five to 15 milligrams per day. SARMs offer many of the same advantages as traditional steroids and testosterone supplements. Oncology, U.S. National Library of Medication, pubmed.ncbi.nlm.nih.gov/ 23499390/.

Related Articles:

Learn More (Proven SARMs):

Read More:

  1. HealthLine (What Is SARMs)
  2. WikiPedia

WE'RE LOYAL TO YOU,AND WE CAN BACK THAT UP.

SIGN UP FOR AN ACCOUNT

Every single batch is 3rd-party tested for purity because quality is our #1 concern.

Creat An Account

LIKE & SHARE OUR PAGE

LEAVE A PRODUCT REVIEW

Every single batch is 3rd-party tested for purity because quality is our #1 concern.

Shop Products

Latest Blog

January 1, 2021

Research study To Examine The Security & Effectiveness Of 13 Weeks Of Sarm Gsk2881078| provensarms.com

What is SARMs and its Health Advantages: Everything You Required to Know HOW ARE THEY DIFFERENT FROM STEROIDS? SARMs, likewise called se...

read more +
April 17, 2021

Sarms Pros And Cons In 2020| provensarms.com

What Are SARMs: Are SARMs Safe and Should They Be Utilized in 2020? Have you been working out for a while and following up with the right diet,...

read more +
May 9, 2021

Whatever You Need To Understand About Sarms.| provensarms.com | 2020

This Is Whatever You Need to Learn About SARMs Key Takeaways SARM means selective androgen receptor modulator, and it's a type of drug tha...

read more +
February 2, 2021

Sarms Ostarine Francais, Sarms Ostarine Funciona| provensarms.com | 2020

What Are SARMs: Are SARMs Safe and Should They Be Used in 2020? Have you been working out for a while and following up with the correct diet pl...

read more +
Select your currency
USD United States (US) dollar
EUR Euro