r/Supplements Sep 11 '25

Reminder on Community Conduct

36 Upvotes

As a community focused on supplements, we encourage open discussion based on both scientific evidence and personal experience. However, it’s important to remember that respectful discourse is the foundation of this subreddit.

Criticism and debate are welcome — personal attacks are not. Recently, we’ve had to ban several users who crossed the line by targeting individuals rather than addressing ideas. This behavior will not be tolerated.

Please:

-Respect differing opinions, even if you strongly disagree.

-Focus on the content of the discussion, not the person behind it.

-Use the report function if you encounter posts or comments that violate these standards.

Let’s continue to make this a space where we support and learn from each other. Thank you for helping keep the community constructive and respectful.

— Mod Team


r/Supplements 4h ago

This Popular Workout Supplement May Give Cancer Immunotherapy a Big Boost

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67 Upvotes

r/Supplements 7h ago

General Question Creatine and water weight

25 Upvotes

I want to start Creatine for all the benefits, but I’m nervous about the weight gain and bloating. I understand that it’s all water weight, but I think I would struggle with this. How does everyone deal with this?

Do the benefits outweigh the downsides? Does the water weight eventually go away after your body adjusts, or is it only after you stop taking it?

Thank you!


r/Supplements 8h ago

General Question How much water do you actually need for creatine to work?

23 Upvotes

I've seen a lot of people say you need to drink a lot of water while taking creatine, but I'm confused about how much is actually necessary.

Is there a minimum amount of water you should drink per day for creatine to be effective?


r/Supplements 16h ago

Caffeine + L-theanine for focus: the timing (and ratio) matters more than most guides admit

111 Upvotes

I'm a pharmacist, and the caffeine + L-theanine stack comes up constantly for studying and deep work. It does have real controlled-trial support — but two things get glossed over: the effect is modest, and how you time and ratio it changes whether it works at all.

**The evidence (honestly)**

- A 2014 systematic review + meta-analysis (Camfield et al., Nutrition Reviews) found moderate effect sizes for the combination in the first ~2 hours, mainly for alertness and attention-switching accuracy.

- Owen et al. 2008: 50 mg caffeine + 100 mg L-theanine improved switch-task accuracy and reduced distraction.

- Haskell et al. 2008: 150 mg caffeine + 250 mg L-theanine improved attention and alertness.

- BUT Dodd et al. 2015: at 75 mg caffeine + 50 mg L-theanine, adding L-theanine did not reproduce caffeine's cognitive gains (and appeared to blunt some of its behavioral effects). So a low L-theanine:caffeine ratio may not help.

Net: a modest, calm-focus benefit shows up fairly consistently when L-theanine is at or above the caffeine dose, and less so when it's below.

**The timing (the part you control)**

- Caffeine peaks in the blood within about an hour of a dose (varies by person; reported range ~15–120 min). Take the stack ~30–45 min BEFORE the session so the peak lands during the work, not after.

- Caffeine half-life is ~5 h. A controlled study (Drake et al. 2013) found 400 mg even 6 h before bed measurably cut sleep. Keep caffeine to the morning/early afternoon and set a personal cutoff.

**Practical starting point**

Modest caffeine (40–150 mg) with L-theanine at ~1:1 to 2:1 (theanine:caffeine), ~30–45 min before you start, mornings only if you're sleep-sensitive. Treat it as a small edge, not a shortcut — and it doesn't replace sleep.

**Safety:** FDA cites ~400 mg caffeine/day as generally fine for healthy adults, with wide individual variation. Less or none if pregnant, breastfeeding, anxious, or with a heart-rhythm issue.

Disclosure: I run a supplement brand that makes low-dose caffeine oral dissolving strips, so I'm biased toward the "precise dose, right time" framing — but that's what the pharmacology supports. Posting the science, happy to share references.


r/Supplements 1h ago

Recommendations What do y’all think of my stack for Boosting test and libido?

Upvotes

Make 29 675 test

Supplement
Daily dosage:

every other day mornings specially for test+ libido:
Tongkat Ali
400 mg

Fenugreek
675 mg

Shilajit
500 mg

Boron
10 mg

Some of these servings are a little over what listed because of the serving sizes the brands I got offer.
Most of these are form nutricost or a third party test brand.

General health/performance: daily

Vitamin D3 + K2
2,000–5,000 IU vitamin D3

Omega-3
1,650 mg combined EPA + DHA

Multivitamin ( beef liver/beef organ caps
Half a serving each.

Creatine
7.5 g

Magnesium glycinate
500 mg

Zinc
15–30 mg elemental zinc

KSM-66 ashwagandha
700 mg


r/Supplements 5h ago

General Question Thoughts on the caffeine and L-theanine ratio in Neurogum?

8 Upvotes

I've been reading more about caffeine and L-theanine since they seem to be one of the more researched nootropic combinations. A lot of people say the combo gives you the alertness from caffeine with fewer jitters but the recommended ratios seem to vary.
I recently came across Neuro gum which uses caffeine and L-theanine in gum instead of a capsule or drink and it got me wondering about the science behind it rather than the product itself.
Questions for people who know this stuff better:
Is there an ideal caffeine to L-theanine ratio based on the research?
Have you noticed any real difference between caffeine + L-theanine and plain coffee?


r/Supplements 2h ago

Recommendations Any Liquid Vitamin D3 rec's since Thorne got bought out :-(?

4 Upvotes

Hi all,

Any recommendations for Liquid/Drops Vitamin D3 without K2 (not good for people with G6PD)? My go to was Thorne Vitamin D3 but ever since they got bought out by L Catterton (LVMH has a 40% stake in them!) the quality has gone down. The old bottle had 600 doses in a bottle (each dose was 1000 IUs). The new version has 30 doses (each dose is 4000 IUs). The new version is 4 TIMES more expensive per dose and you have to replace the bottle 5 TIMES as often.


r/Supplements 1h ago

If you stopped magnesium glycinate tomorrow, would you notice a difference?

Upvotes

I’m curious because magnesium is one of those supplements where the effects can be quite subtle. It’s not usually something where you suddenly feel a dramatic change when you start taking it.

For those who have taken a break from magnesium glycinate, did you notice anything was different, or did you feel pretty much the same without it?


r/Supplements 17h ago

Workout Supplement Guide (With Evidence)

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40 Upvotes

All of this data is from meta-analyses focused on general healthy population adults, the people diagrams are mine, but I think they are reasonably in the spirit of Cochrane's guidance1:

Page 1

Creatine monohydrate
https://pubmed.ncbi.nlm.nih.gov/39519498/

Protein supplementation
https://pubmed.ncbi.nlm.nih.gov/28698222/

Caffeine
https://pubmed.ncbi.nlm.nih.gov/32551869/

Beta-alanine
https://pubmed.ncbi.nlm.nih.gov/27797728/

Page 2

Dietary nitrate / beetroot
https://pubmed.ncbi.nlm.nih.gov/35580578/

Dietary nitrate / beetroot, muscular performance
https://pubmed.ncbi.nlm.nih.gov/33554654/

Sodium bicarbonate
https://pubmed.ncbi.nlm.nih.gov/34794476/

Citrulline malate, repetitions to failure
https://pubmed.ncbi.nlm.nih.gov/34010809/

Citrulline malate, maximum strength
https://pubmed.ncbi.nlm.nih.gov/34176406/

115.5.3.3, “Re-expressing SMDs through dichotomization and transformation to relative and absolute measures.”


r/Supplements 2h ago

What happens if you don't cycle on/off adaptogen?

2 Upvotes

I have started holy basil regimen to fix my 3am wakeup which I suspect to be due to high cortisol. So far it definitely has made a notice able difference. However I know a lot of people recommend cycling adaptogens on and off every so often. What happens if you don't? Anyone who just takes it everyday can chime in with their own experience either on holy basil or ashwaghanda and not doing the cycling?


r/Supplements 4h ago

Best Zinc and Magnesium supplement brand for weaker Gut

3 Upvotes

looking for high quality product and easier on stomach form.

zinc and magnesium separate supplements. found Dr. Berg product but want to check if it is good ?


r/Supplements 3h ago

Replacement for Optimum Nutrition Protein Powder

2 Upvotes

Went to order more on Amazon, and the price is insane. What is a good alternative brand protein powder?


r/Supplements 4h ago

Is superfood powder as good as the real thing?

2 Upvotes

My 9 yr old daughter can't eat vegetables due to ARFID so she drinks a mixture that contains a bunch of naturally derived vitamins & minerals obtained from veggies.. Is it as good as actual vegetables? Her blood work came back "perfect" & her fibre comes from other sources.

Our GP is still trying to get her to eat vegetables though claiming they're better. I'll continue to encourage her but in the meantime I'm assuming all's good?


r/Supplements 15m ago

Switched up the daily stack a bit, 31m.

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Upvotes

Trying to keep things simple but still have effective. Any tips are appreciated!


r/Supplements 19h ago

The GLP-1 eating disorder overlap is now showing up in the data, not just anecdotes

31 Upvotes

WSJ ran a piece on people who used GLP-1s for weight loss and later ended up in treatment for anorexia:

 https://www.wsj.com/health/wellness/glp1-anorexia-wegovy-mounjaro-1bf4035c

Worth reading alongside the primary literature from the past few months, because the reporting is no longer just anecdotal.

A JAMA Psychiatry survey published this summer (Levinson and colleagues) recruited 436 people with diagnosed eating disorders in 2025 and asked about GLP-1 use. Just over 32% reported having ever used one, and 22% reported current use. Broken out by diagnosis, a little over 50% of participants with binge eating disorder reported use, about 42% of those with atypical anorexia nervosa, roughly 30% of those with ARFID, over 25% of those with bulimia, and about 11% of those with anorexia nervosa. Roughly 10% obtained them through online providers prescribing compounded formulations. Over 10% reported misuse, defined as taking more or less than prescribed, using longer than prescribed, tampering with injection equipment, or sharing without a prescription.

The authors described the weight loss market as a rapidly evolving risk environment for this population.

Summary of the findings:

 https://www.medscape.com/viewarticle/many-eating-disorder-patients-using-glp-1s-2026a1000lym

In April, NEJM published a perspective by Amanda Banks raising the same concern from the prescribing side. She noted the share of GLP-1 prescriptions written for people who were not diabetic, obese, or overweight rose from 4.5% in 2018 to 17% in 2023, and argued for consensus recommendations to protect people with existing or emerging eating disorders. A 2023 FDA analysis found misuse reports for semaglutide were roughly four times higher than for other GLP-1 drugs.

NEJM perspective:

 https://www.nejm.org/doi/full/10.1056/NEJMp2600300

Clinician-side reporting describes the same pattern from treatment centers, including patients presenting at very low BMI while still dosing.

NPR, February 2026: https://www.npr.org/2026/02/04/nx-s1-5677633/glp-1-obesity-wegovy-zepbound-eating-disorders-anorexia-bulimia

Washington Post, May 2026: https://www.washingtonpost.com/health/2026/05/23/weight-loss-drugs-pose-dangers-people-with-eating-disorders/

MindSite News, May 2026: https://mindsitenews.org/2026/05/29/glp-1-access-a-problem-for-people-with-eating-disorders/

The mechanism cuts both ways, which is part of why this is hard to legislate around. A 2025 systematic review and meta-analysis found GLP-1 agonists reduced Binge Eating Scale scores by about 8 points, though the pooled sample was only 182 participants across five studies and heterogeneity was high. WSJ also covered that side on July 13 in a piece on clinicians treating certain eating disorders with these drugs. The same appetite and reward suppression that helps in binge-type presentations appears to reinforce restriction in people with a restrictive history. Same drug class, opposite clinical valence depending on phenotype.

Meta-analysis: https://link.springer.com/article/10.1007/s40519-025-01720-9

Penn Medicine's eating disorder program has said outright that no protocol exists to screen for eating disorders before prescribing GLP-1 receptor agonists. That gap widens with telehealth and disappears entirely outside a clinical relationship.

Penn Medicine:

 https://www.pennmedicine.org/physicians-hub/physician-article/implications-of-glp-1-medications-for-eating-disorder-care

ANAD clinical guidance:

 https://anad.org/learning-library/glp-1-medications-eating-disorders/

More stories at r/PeptideTides


r/Supplements 31m ago

Recommendations How do I get what I want from my doctor?

Upvotes

For months I’ve had terrible trouble sleeping, have been constantly exhausted, out of it, unable to focus or concentrate, having vision problems, low mood, low motivation, irritable, among other mental and physical problems.

I’m a 21 year old man living a healthy lifestyle and there’s just no reason I should be coming apart at the seams like this unable to do the most basic human functions, like sleeping for example. I surmise there must be something physically off with me right now and I’ve done all I can to fix it, experimenting with different supplements, altering my routine, doing this or doing that, for months nothing has worked. I’ve seen multiple different doctors who all just try to push some weird prescription on me no matter what I do or say to them I always just get stuck with no help and a script for some weird mild altering drug or random muscle relaxer or something. It’s stupid and it’s bs and I just need help and for all the time, money, and effort I’ve dumped into seeing doctors and blindly testing supplements I have absolutely nothing to show for it and I still feel like crap.

I think there has to be something and instead of helping me figure it out, doctors just want to give me drugs, so I have to figure it out myself. I made a doctor take my blood a few months ago and I don’t know what test they ran but nothing came back out of the ordinary. I have no idea what the problem is and blindly trying supplements hasn’t helped. I need a medical professional to help me and given my previous experiences with that in the last 12 months I feel as though I need to give my doctor VERY specific instructions as to what I want him to do/what tests I want done in order to find my solution. Does anyone have any experience with this or any advice? I’m at the end of my rope here and I know there’s a solution but for the life of me I can’t get anyone to help me.


r/Supplements 19h ago

General Question Garlic is awesome but how to reduce smell?

34 Upvotes

Garlic is working better for me than any supplement I have tried so far and its mood boosting effects are insane. A piece of garlic is more effective than my multivitamin wtf????

However, there is wone problem I have it's the smell/ body odor it can cause if I eat too much. What can I do to eliminate the smell from my pores??


r/Supplements 1h ago

General Question Thoughts on this dollar-a-day homemade preworkout for hypertrophy/strength training?

Post image
Upvotes

I take creatine already, and I’m not a fan of beta alanine… I was also thinking about adding baking soda but the last time I tried it, it upset my stomach.


r/Supplements 1h ago

Anyone using ashwagandha long term? Curious about cycling or just taking it daily

Upvotes

Been taking ashwagandha for about four months straight, KSM66, 600mg in the evening. The stress reduction and sleep improvement showed up pretty fast, maybe two weeks in. But I keep seeing conflicting stuff about whether you should cycle it or if taking it daily indefinitely is fine.

Some people say 8 weeks on, 24 weeks off. Others say they've been on it daily for years with no issues. I genuinely can't find a clear answer, and the studies I've come across mostly run 812 weeks, so there's not much longterm data to go on.

The reason I'm even questioning it is that the effects feel slightly blunted compared to when I first started. Not gone, just not as strong. Could be tolerance, could be that the initial jump felt bigger because things were worse back then. Hard to tell.

Anyone who's been using it for 6 months or more: did you cycle it, and did that actually change anything? Also curious if switching brands or forms made a difference for anyone who felt like it started working less well.


r/Supplements 1h ago

I am suffering from severe side effects caused by copper. Has anyone here ever solved this problem?

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r/Supplements 1h ago

Recommendations carbs really helps keep my muscles full by storing store glycogen to them, problem is once i reduce carbs, my glycogen drops so quickly.

Upvotes

Is there anything I can take that will prevent my glycogen from dropping so quickly without having to eat so many carbs? My muscles get so flat when I reduce my carb intake just for a couple days. It's like I have to continuously eat carbs to make my muscles look full.


r/Supplements 1h ago

Experience I built a tool to figure out if my supplements are actually doing anything

Upvotes

I created a website that might be helpful to some of you.

I’ve been taking supplements for a few years now, and every time I started something new I’d write down notes about how I felt or whether I noticed any benefits. After a while, those notes became a complete mess.

So I vibecoded a simple web app called Signals.
The idea is simple: instead of guessing whether a supplement is actually doing anything, you can run a personal experiment. You pick a supplement, track a few things that matter to you (like energy, sleep, focus, recovery, etc.) with a quick daily check-in, and after 30, 60, or 90 days you get a summary of your own data.

It’s not trying to tell you that a supplement works or doesn’t work. It just helps you answer the question:
“Did I actually notice a meaningful difference while taking it?”

I realized I spend hundreds (probably thousands) of euros on supplements every year, but if someone asked me which ones genuinely made a noticeable difference for me, I’d struggle to answer anything besides magnesium.
That’s exactly the problem I’m trying to solve.
I’d love to hear your thoughts.

Is this something you’d actually use? What features would make it genuinely useful for you?

It’s completely free so feel free to test it:
https://signalslab.app


r/Supplements 1h ago

Is this protein powder legit?

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Upvotes

r/Supplements 5h ago

Recommendations Just got my vitamin D levels 25ngml

2 Upvotes

How to get to the optimal ranges that are typically 30--50 ng/mL which supplements would work and what dosage.