{"id":628683,"date":"2024-07-12T09:30:28","date_gmt":"2024-07-12T13:30:28","guid":{"rendered":"https:\/\/www.singlecare.com\/blog\/?p=628683"},"modified":"2025-05-07T11:43:53","modified_gmt":"2025-05-07T15:43:53","slug":"when-to-take-l-carnitine","status":"publish","type":"post","link":"https:\/\/www.singlecare.com\/blog\/when-to-take-l-carnitine\/","title":{"rendered":"When to take L-carnitine"},"content":{"rendered":"<p><a href=\"https:\/\/www.singlecare.com\/prescription\/l-carnitine\"><span style=\"font-weight: 400;\">L-carnitine<\/span><\/a><span style=\"font-weight: 400;\"> is a common form of <\/span><a href=\"https:\/\/ods.od.nih.gov\/News\/Carnitine_Conference_Summary.aspx\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">carnitine<\/span><\/a><span style=\"font-weight: 400;\">, an amino acid found in animal products, especially red meat. A vegan diet may be low in carnitine content<\/span><span style=\"font-weight: 400;\">. <\/span><span style=\"font-weight: 400;\">According to the <\/span><a href=\"https:\/\/ods.od.nih.gov\/factsheets\/Carnitine-HealthProfessional\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">National Institutes of Health<\/span><\/a><span style=\"font-weight: 400;\"> (NIH), it is also naturally produced in the human liver, kidneys, and brain. It is found in the highest concentrations in the brain and <\/span><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/25612929\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">skeletal muscle<\/span><\/a><span style=\"font-weight: 400;\">. L-carnitine is vital for mitochondria function and fatty acid oxidation\u2014essentially, it helps with energy production by transforming fat into fuel for the body\u2019s cells.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If you\u2019re considering an L-carnitine supplement, you might wonder: When is the best time to take it to get the most benefits? The answer depends on the form you\u2019re taking and why you\u2019re taking it\u2014for <\/span><a href=\"https:\/\/www.singlecare.com\/blog\/fitness-supplements\/\"><span style=\"font-weight: 400;\">exercise performance<\/span><\/a><span style=\"font-weight: 400;\">, post-workout muscle recovery, or <\/span><a href=\"https:\/\/www.singlecare.com\/conditions\/dementia-treatments-and-medications\"><span style=\"font-weight: 400;\">brain function<\/span><\/a><span style=\"font-weight: 400;\">, for example.<\/span><\/p>\n<h2 id=\"what-is-l-carnitine\"><span style=\"font-weight: 400;\">What is L-carnitine?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">L-carnitine is a nutrient that helps your body transform fat into energy. Your body produces it, and it is available as a supplement. Studies have shown that combining it with <\/span><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC5244582\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">creatine and leucine<\/span><\/a><span style=\"font-weight: 400;\"> may help increase muscle mass and improve physical performance.<\/span><\/p>\n<h3 id=\"types-of-l-carnitine\"><span style=\"font-weight: 400;\">Types of L-carnitine<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">L-carnitine is the most widely used form\u2014and the form produced by your body\u2014but there are four other types of carnitine you may come across.<\/span><\/p>\n<ul>\n<li><b>L-carnitine L-tartrate:<\/b><span style=\"font-weight: 400;\"> This form is known for its potent antioxidant properties, which support muscle recovery and minimize muscle damage. Recent studies have shown that L-carnitine L-tartrate can significantly improve short-term recovery among athletes. A randomized double-blind, placebo-controlled trial with eighty participants aged 21 to 65 found that daily supplementation for five weeks <\/span><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC8541253\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">improved perceived recovery<\/span><\/a><span style=\"font-weight: 400;\"> and reduced soreness.\u00a0<\/span><\/li>\n<li aria-level=\"1\"><b>Acetyl-L-carnitine (ALCAR): <\/b><span style=\"font-weight: 400;\">Acetyl-L-carnitine has all of the benefits of regular L-carnitine, such as improved metabolism, but it more easily crosses the blood-brain barrier.<\/span> <span style=\"font-weight: 400;\">This form has several effects on the brain and may be helpful for <\/span><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC7284336\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">cognitive function<\/span><\/a><span style=\"font-weight: 400;\">, especially in cases of neurodegenerative diseases like dementia and mental health conditions like depression.<\/span><\/li>\n<li aria-level=\"1\"><b>Propionyl-L-carnitine: <\/b><span style=\"font-weight: 400;\">This form of L-carnitine is best for vascular and circulatory health because it <\/span><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC2211291\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">promotes nitric oxide production in the body<\/span><\/a><span style=\"font-weight: 400;\">. Research suggests that propionyl-L-carnitine may <\/span><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC8413087\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">improve blood flow<\/span><\/a><span style=\"font-weight: 400;\"> in people with lower extremity peripheral artery disease (PAD), which may help improve exercise performance.<\/span><\/li>\n<li aria-level=\"1\"><b>D-carnitine: <\/b><span style=\"font-weight: 400;\">You should not take this form as a supplement. <\/span><a href=\"https:\/\/www.researchgate.net\/publication\/335159938_Functional_differences_between_L-and_D-carnitine_in_metabolic_regulation_evaluated_using_a_low-carnitine_Nile_tilapiamodel\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Animal studies<\/span><\/a><span style=\"font-weight: 400;\"> have shown that it may cause fat to accumulate where it shouldn\u2019t, causing liver problems or oxidative stress.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Ultimately, it\u2019s best to consult a dietitian or healthcare provider when deciding which form is best for you.<\/span><\/p>\n\t\t<div id=\"coupon-cta\" class=\"coupon-cta master-template\">\n\t\t\t<p id=\"headline\">Save up to 80% on L-Carnitine with SingleCare<\/p>\n\t\t\t<p id=\"subheadline\">Different pharmacies offer different prices for the same medication. SingleCare helps find the best price for you.<\/p>\n\t\t\t<div class=\"details-wrap\">\n\t\t\t\t<div class=\"details\">\n\t\t\t\t\tL-Carnitine 2 bottles (30 Tablets)\t\t\t\t<\/div>\n\t\t\t\t<div class=\"address\">\n\t\t\t\t\t23666 - Hampton, VA\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"api-response\">\n\t\t\t\t\t\t<div class=\"coupon\">\n\t\t\t<div class=\"logo\">\n\t\t\t<img decoding=\"async\" src=\"https:\/\/images.singlecare.com\/content\/images\/pharmacy\/logo-color-kroger.svg\" alt=\"Kroger Pharmacy\" \/>\t\t\t<\/div>\n\t\t\t<div class=\"price\">\n\t\t\t\t<div class=\"price-number\">\n\t\t\t\t\t$22.42<br\/>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"price-signup\">\n\t\t\t\t\t<span class=\"info-icon\">i<\/span>\n\t\t\t\t\tPrice with <a href=\"https:\/\/www.singlecare.com\/prescription\/l-carnitine#blog-cta\">signup<\/a>\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"couponbtn\">\n\t\t\t\t<a target=\"_blank\" href=\"https:\/\/www.singlecare.com\/prescription\/l-carnitine#blog-cta\">Get free coupon<\/a>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"coupon\">\n\t\t\t<div class=\"logo\">\n\t\t\t<img decoding=\"async\" src=\"https:\/\/images.singlecare.com\/content\/images\/pharmacy\/logo-color-harristeeter.svg\" alt=\"Harris Teeter Pharmacy\" \/>\t\t\t<\/div>\n\t\t\t<div class=\"price\">\n\t\t\t\t<div class=\"price-number\">\n\t\t\t\t\t$22.42<br\/>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"price-signup\">\n\t\t\t\t\t<span class=\"info-icon\">i<\/span>\n\t\t\t\t\tPrice with <a href=\"https:\/\/www.singlecare.com\/prescription\/l-carnitine#blog-cta\">signup<\/a>\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"couponbtn\">\n\t\t\t\t<a target=\"_blank\" href=\"https:\/\/www.singlecare.com\/prescription\/l-carnitine#blog-cta\">Get free coupon<\/a>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t<a target=\"_blank\" href=\"https:\/\/www.singlecare.com\/prescription\/l-carnitine#blog-cta\" class=\"coupon-see-all-btn\">See L-Carnitine prices at all pharmacies<\/a>\n\t\t<\/div>\n\n\t\t\n<h2 id=\"when-is-the-best-time-to-take-l-carnitine\"><span style=\"font-weight: 400;\">When is the best time to take L-carnitine?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">There is no standard recommended time of day to take L-carnitine supplements. The best timing depends on the form of L-carnitine and the benefits you seek. Timing is most important for people taking L-carnitine to improve exercise performance or recovery.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">There are several potential health benefits of L-carnitine, including:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Athletic performance enhancement<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Brain function support for those with Alzheimer\u2019s disease and <\/span><a href=\"https:\/\/www.singlecare.com\/conditions\/dementia-symptoms\"><span style=\"font-weight: 400;\">dementia<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.singlecare.com\/conditions\/diabetes-treatment-and-medications\"><span style=\"font-weight: 400;\">Diabetes<\/span><\/a><span style=\"font-weight: 400;\"> control or prevention\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cardiovascular protection<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.singlecare.com\/blog\/tag\/weight-loss\/\"><span style=\"font-weight: 400;\">Weight loss<\/span><\/a><\/li>\n<\/ul>\n<h3 id=\"morning\"><span style=\"font-weight: 400;\">Morning<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">L-carnitine L-tartrate, the form most effective for athletic performance enhancement, is best taken on an empty stomach in the morning or before working out, <\/span><span style=\"font-weight: 400;\">says <\/span><a href=\"https:\/\/nmnm.org\/team\/dr-patrick-nuzzo-dn\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Patrick Nuzzo, DN<\/span><\/a><span style=\"font-weight: 400;\">, a doctor of naprapathy and the founder of the <\/span><a href=\"http:\/\/sunm.edu\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Southwest University of Naprapathic Medicine<\/span><\/a><span style=\"font-weight: 400;\"> in Santa Fe, New Mexico.<\/span><\/p>\n<h3 id=\"midday\"><span style=\"font-weight: 400;\">Midday<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Or, you can take it in the morning <\/span><i><span style=\"font-weight: 400;\">and<\/span><\/i><span style=\"font-weight: 400;\"> before a workout. \u201cSeveral studies recommend splitting supplemental L-carnitine intake into two or three doses,\u201d says <\/span><a href=\"http:\/\/www.instagram.com\/tallentnutrition\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Rickelle Tallent<\/span><\/a><span style=\"font-weight: 400;\">, RDN, LD, owner of <\/span><a href=\"http:\/\/www.tallentnutrition.com\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Tallent Nutrition &amp; Wellness<\/span><\/a><span style=\"font-weight: 400;\"> in Las Vegas, Nevada. \u201cIf the goal of taking supplemental L-carnitine is enhanced athletic performance and recovery, consider taking it 30 to 60 minutes before exercise along with fast-acting carbohydrates.\u201d<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Different types of L-carnitine may offer different benefits, with acetyl-L-carnitine often taken for its mental health benefits and improved effects on body fat metabolism. \u201cAcetyl-L-carnitine is best taken in between meals and even better with coffee or green tea for added fat-burning properties,\u201d says <\/span><a href=\"https:\/\/themintnutrition.com\/about\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Christiane Matey, RDN<\/span><\/a><span style=\"font-weight: 400;\">, a North Carolina-based dietitian and founder of MINT Nutrition.<\/span><\/p>\n<h3 id=\"nighttime\"><span style=\"font-weight: 400;\">Nighttime<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">At least one case study has shown that L-carnitine may help with <\/span><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/31864971\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">nighttime leg cramps<\/span><\/a><span style=\"font-weight: 400;\">, although this case study involved an individual who had experienced a stroke. People taking L-carnitine for post-workout recovery and reduced muscle soreness might find it beneficial to take their supplement at night, especially after days of high-intensity exercise.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Bottom line: There is no one-size-fits-all approach to timing L-carnitine supplementation. It is best absorbed on an empty stomach. However, its quick effectiveness means anyone taking it for athletic enhancement may experience greater benefits by taking it along with energy-boosting food shortly before a workout.<\/span><\/p>\n<h2 id=\"how-much-l-carnitine-should-i-take-daily\"><span style=\"font-weight: 400;\">How much L-carnitine should I take daily?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">\u201cOptimal dosage is still undecided,\u201d says Matey. There is no recommended dietary allowance (RDA) of L-carnitine. According to the NIH, common doses range from 3 milligrams (mg) to 5,000 mg daily, with an average 14% to 18% uptake rate. In other words, your body doesn\u2019t actually absorb all of the L-carnitine in the supplement.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Experts agree that supplementation is considered generally safe, even long-term. However, Tallent says L-carnitine is not recommended for children, pregnant women, and people with seizure disorders.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ultimately, anyone considering an L-carnitine supplement should consult a healthcare provider to determine the appropriate type and dosage.<\/span><\/p>\n<h2 id=\"what-should-not-be-taken-with-l-carnitine\"><span style=\"font-weight: 400;\">What should not be taken with L-carnitine?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">According to the NIH, several drugs have the potential to interact with L-carnitine. Certain medications can deplete natural L-carnitine levels and potentially cause carnitine deficiency:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Pivalate-conjugated <\/span><a href=\"https:\/\/www.singlecare.com\/blog\/tag\/antibiotics\/\"><span style=\"font-weight: 400;\">antibiotics<\/span><\/a><span style=\"font-weight: 400;\"> such as pivampicillin<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.singlecare.com\/drug-classes\/anticonvulsants\"><span style=\"font-weight: 400;\">Anticonvulsants<\/span><\/a><span style=\"font-weight: 400;\"> such as <\/span><a href=\"https:\/\/www.singlecare.com\/prescription\/valproic-acid\/what-is\"><span style=\"font-weight: 400;\">valproic acid<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/www.singlecare.com\/prescription\/phenobarbital\"><span style=\"font-weight: 400;\">phenobarbital<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/www.singlecare.com\/prescription\/phenytoin\/what-is\"><span style=\"font-weight: 400;\">phenytoin<\/span><\/a><span style=\"font-weight: 400;\">, and <\/span><a href=\"https:\/\/www.singlecare.com\/prescription\/carbamazepine\"><span style=\"font-weight: 400;\">carbamazepine<\/span><\/a><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">If you\u2019re taking one of these prescriptions, ask your healthcare provider if L-carnitine supplementation might be right for you.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Before starting any new dietary supplements, it\u2019s a good idea to talk to your healthcare provider or pharmacist about the risks and possible interactions with any drugs or vitamins.<\/span><\/p>\n<h2 id=\"side-effects-of-l-carnitine\"><span style=\"font-weight: 400;\">Side effects of L-carnitine<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">L-carnitine supplements are considered generally safe, but taking high doses of L-carnitine (in excess of 3,000 mg) can increase your risk of side effects. Potential <\/span><a href=\"https:\/\/ods.od.nih.gov\/factsheets\/Carnitine-Consumer\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">side effects of L-carnitine supplementation<\/span><\/a><span style=\"font-weight: 400;\"> include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Nausea<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Vomiting<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Stomach cramps<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Diarrhea<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A fishy body odor<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Muscle weakness in people with chronic kidney disease<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">An increased risk of seizures in people with a seizure disorder<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Additionally, Tallent says L-carnitine supplementation may also elevate <\/span><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC7037757\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">trimethylamine-N-oxide (TMAO) blood levels<\/span><\/a><span style=\"font-weight: 400;\">\u2014a risk factor for atherosclerosis, the medical term for clogged arteries.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Any unpleasant side effects should be reported to a healthcare provider who can advise whether it\u2019s a good idea to stop taking L-carnitine and, if so, whether it would be helpful to taper off the supplement slowly. Dr. Nuzzo says abruptly stopping L-carnitine supplementation may cause temporary withdrawal effects such as fatigue, muscle cramping, irritability, or gastrointestinal symptoms.<\/span><\/p>\n<h2 id=\"signs-that-l-carnitine-supplements-are-working\"><span style=\"font-weight: 400;\">Signs that L-carnitine supplements are working<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">It can take anywhere from three weeks to three months to start noticing the benefits of L-carnitine supplementation, according to Tallent. Dr. Nuzzo adds that increased energy and faster muscle recovery often kick in within the first month of supplementation.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Tallent says other signs that L-carnitine supplements are working may include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Modest weight loss<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Improved blood cholesterol levels<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Improved blood pressure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Improved circulation<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Improved blood sugar levels<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">If you have been taking L-carnitine supplements and don\u2019t notice any improvements after three months, consider taking it with a carbohydrate source, such as fruit or fruit juice. Insulin released after eating a carbohydrate may improve the <\/span><a href=\"https:\/\/www.researchgate.net\/publication\/7401661_Insulin_stimulates_L-carnitine_accumulation_in_human_skeletal_muscle\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">uptake of L-carnitine<\/span><\/a><span style=\"font-weight: 400;\"> into muscle cells.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>L-carnitine is a common form of carnitine, an amino acid found in animal products, especially red meat. A vegan diet may be low in carnitine content. According to the National Institutes of Health (NIH), it is also naturally produced in the human liver, kidneys, and brain. It is found in the highest concentrations in the [&hellip;]<\/p>\n","protected":false},"author":135,"featured_media":628721,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[11],"tags":[812],"coauthors":[20942],"class_list":["post-628683","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-wellness","tag-supplements","wpautop"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>When to take L-carnitine: Dosage, forms, and side effects<\/title>\n<meta name=\"description\" content=\"L-carnitine, a supplement that helps the body transform fat into energy, can be taken at any time. 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