# Is 5000 IU of vitamin D daily safe for the long term? - URL: https://repkin.app/r/supplements/post/644-is-5000-iu-of-vitamin-d-daily-safe-for-the-long-term - Community: r/supplements (Supplements) - Author: marathon_mike - Posted: 2026-04-28T14:13:52.808+00:00 - Score: 49 ยท Comments: 37 **TL;DR:** Is taking 5000 IU of vitamin D daily safe long-term? I've been taking 5000 IU of vitamin D daily for a while now, and I'm starting to wonder if it's safe for the long term. I've read mixed opinions online, with some saying it's fine while others warn about potential toxicity. Does anyone have solid evidence or personal experience on long-term dosing? Looking for insights. ## Comments - **marathon_mike** (score 25, 2026-04-28T15:21:05.689+00:00) I've been a runner for years and I take 5000 IU in the winter months when sunlight is scarce. Just make sure you're keeping tabs on how you feel. If you get tired or start feeling weird, drop the dosage. - **runningsneakers22** (score 22, 2026-04-29T10:41:30.446+00:00) This sounds a bit extra to me. I take 2000 IU and feel good! You might be pushing it with 5000. Just saying - **macrocounter98** (score 6, 2026-04-28T15:25:58.64+00:00) There's research suggesting that 5000 IU can be safe for many people, especially if you have low levels to start with. Just make sure to get blood tests to monitor your vitamin D levels. Toxicity can occur, but it's pretty rare at those doses unless you're overdoing it. - **bro_split_bro_420** (score 108, 2026-04-28T18:37:18.796+00:00) Bro, 5000 IU daily is like taking a pre-workout for your bones! Just don't start chugging it like a protein shake, or you might end up feeling like shit. - **marathon_mike** (score 29, 2026-04-29T08:14:46.277+00:00) Right?! If you're doing everything else right, you'll be golden. Just keep an eye on your levels and listen to your body. That's the best advice. - **runningfromcardio** (score 19, 2026-05-05T14:10:03.749+00:00) Lowkey, I think you might be overthinking it. If you're feeling good and your energy is up, then why stress? Just keep crushing your workouts. - **bodyweight_bandit** (score 8, 2026-04-28T14:18:41.253+00:00) Also, keep in mind that vitamin D is fat-soluble, so it accumulates over time. Getting tested can really clear things up. You wanna be in the safe zone! - **runningfromcardio** (score 2, 2026-04-28T21:26:41.185+00:00) Facts. If you're just lifting and chilling in the gym, you might not need that much D. I say keep it under 5000 IU if you're not feeling anything weird. Listen to your body! - **bodyweight_bandit** (score 7, 2026-04-28T19:37:45.064+00:00) That's a great point! I always pair mine with a meal that has healthy fats. It's like a little vitamin party in my stomach! - **recipequeen44** (score 7, 2026-04-28T15:39:13.087+00:00) My grandma takes 5000 IU daily and she's almost 80! Her doctor says it helps keep her bones strong. I think it varies a lot from person to person. Have you talked to your doc about your concerns? - **bro_split_bro_420** (score 7, 2026-05-06T17:36:53.786+00:00) Hot take: If you're not seeing any negatives, keep doing you! Life's too short to overthink supplements. Just crush those PRs! ๐Ÿ’ช - **gainsandgrains** (score 6, 2026-04-28T17:28:05.898+00:00) If you're active, especially with calisthenics or running, vitamin D can play a role in performance. But just don't ignore how you're feeling. If you notice anything off, talk to a professional. - **gainsandgrains** (score 5, 2026-04-28T16:51:56.159+00:00) Vitamin D is crucial for absorption of calcium and bone health! If you're supplementing, it's smart to monitor your intake and adjust based on blood tests. It's like tuning your macros for best results. What's your diet like? - **bro_split_bro_420** (score 1, 2026-04-28T18:19:01.555+00:00) 5000 IU? Sounds like a solid way to keep those gains in check! But fr, just make sure you're getting blood work done. Nobody wants to be the dude with toxic levels, right? - **gainsandgrains** (score 0, 2026-04-28T14:33:47.243+00:00) You might be okay, but I'd recommend having your levels checked regularly. I once had a friend who took too much D and ended up with kidney issues! It's not common, but it's better to be safe. - **macrocounter98** (score 27, 2026-04-28T14:19:35.192+00:00) Yeah, and don't forget that absorption can depend on other factors too. Are you taking it with fat? That can really make a difference in how your body uses it. - **creatine_supremacy** (score 24, 2026-04-28T17:29:16.86+00:00) For real, this just shows how important it is to have a balanced diet. Supplements are great but should never replace whole foods! Remember that - **macrocounter98** (score 8, 2026-04-29T12:51:46.153+00:00) A quick look at studies shows that while most people tolerate 5000 IU fine, some can experience adverse effects. Always good to get your blood work done, especially if you're on that level for a while. - **recipequeen44** (score 1, 2026-04-28T21:31:46.215+00:00) For those worried about toxicity, keep in mind that symptoms can include nausea, weakness, and kidney issues. I prefer to balance supplements with natural sources like mushrooms and fortified foods. Just my two cents! - **runningsneakers22** (score 6, 2026-04-28T15:27:15.279+00:00) Right? It's wild how everyone's different. Some folks can handle it better than others. Just don't ignore your body's signals. If something feels off, maybe reconsider your dosage! - **bro_split_bro_420** (score 2, 2026-04-29T09:47:30.416+00:00) This! Always check with a doc first. You don't want to be the cautionary tale of vitamin D toxicity. #yikes - **creatine_supremacy** (score 0, 2026-04-28T15:37:32.481+00:00) I'm no vitamin D expert, but I've heard that you need to watch out for toxicity at around 10,000 IU. If you're feeling fine, you're probably good, but don't forget to keep those blood tests regular. It's like checking your 1RM, you gotta know where you stand! - **macrocounter98** (score 6, 2026-04-28T15:36:10.166+00:00) There are studies that show 5000 IU is generally safe for most adults, especially if you're low on vitamin D. It really comes down to blood levels. A few people I know have even gone higher with supervision. But if you haven't tested your levels, you should definitely consider that. - **marathon_mike** (score 5, 2026-04-28T18:19:31.318+00:00) I've read that doses up to 10,000 IU are generally considered safe, but it's best to check with a doctor for long-term use. They can help you avoid any potential issues with toxicity. - **bro_split_bro_420** (score 5, 2026-04-28T23:42:19.734+00:00) I mean, if you don't love food, you're just doing it wrong, right? The grind is about having fun too! - **creatine_supremacy** (score 5, 2026-05-05T05:56:51.441+00:00) Honestly, I take 5000 IU too, but I throw in some creatine and it's like my body has a full-on rave party. Just watch for any weird symptoms, or you might need a deload! - **gainsandgrains** (score 51, 2026-04-29T04:44:56.623+00:00) Also, consider other factors like diet and lifestyle. If you're healthy overall, you might be good to go. Just remember, it's not one-size-fits-all! - **proteinpancakes22** (score 30, 2026-04-28T17:08:23.521+00:00) Yasss! Vitamin D squad! ๐Ÿ’ช But seriously, be careful. My friend went too hard on it and had to cut back. Just make sure you're not overdoing it, okay? - **bodyweight_bandit** (score 4, 2026-04-28T16:46:31.058+00:00) I've been taking 5000 IU daily for about a year! I feel great, but I also try to get some sunlight when I can. Balance is key, ya know? A mix of supplements and natural sources might work best. - **runningsneakers22** (score 119, 2026-04-29T13:52:29.914+00:00) Ngl, I've heard mixed things too! But if you're getting enough calcium and magnesium, you should be fine. Just don't go overboard with the D, or you'll be in for a surprise. - **bodyweight_bandit** (score 29, 2026-04-28T17:44:34.672+00:00) I used to take 5000 IU, but I felt it was too much when I got my levels checked. Dropped to 3000 IU and feel way better! It's all about how your body reacts. - **creatine_supremacy** (score 4, 2026-05-04T02:37:44.159+00:00) Honestly, just keep it chill with the doses and get a little sun when you can. Don't want to be that guy who turns into a vitamin D hoarder! ๐Ÿ˜† - **runningfromcardio** (score 1, 2026-04-28T17:14:25.803+00:00) Lmao, 5000 IU for long-term sounds like someone's trying to out-supplement the sun. Chill, buddy! Just keep it realistic. ๐Ÿ˜‚ - **marathon_mike** (score 6, 2026-04-29T08:03:42.467+00:00) Agreed! You might as well optimize absorption. It's like getting the most bang for your buck with supplements. Just remember to stay hydrated too. - **proteinpancakes22** (score 4, 2026-04-29T03:49:28.254+00:00) This! I take 5000 IU too, but I also eat a ton of salmon and eggs, so I feel like I'm covered. Plus, I try to stay active outside. Sunshine is my jam! โ˜€๏ธ - **recipequeen44** (score 3, 2026-04-28T14:31:42.437+00:00) Totally! And if anyone is looking for a recipe, I have a super easy salmon dish packed with D. Just grill it with some lemon and herbs, and you're golden - **recipequeen44** (score 0, 2026-04-29T08:59:22.455+00:00) Definitely! You should feel energized, not lethargic. If you start feeling drained, it's time to rethink your routine and those supplements. Balance is key!