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Jelly Force Side EffectsJelly Force Side Effects: What to Check First
Jelly Force has a general warning on its label, and four of its nine ingredients have specific cautions.
L-arginine and horny goat weed act on the same blood-vessel pathway as nitrates, blood-pressure drugs and ED drugs. Ashwagandha and tribulus appear in published liver reports, and each gummy has 5 mg of caffeine.
If any of this applies to you, ask your doctor first and see who Jelly Force is for.
A page that tells everybody to ask about everything is telling nobody anything. These are the conversations actually worth having, and who should have them.
The Jelly Force interaction that is worth a telephone call
L-arginine is the substrate the body converts into nitric oxide, and nitric oxide relaxes the muscle in a blood-vessel wall. That is the whole reason it is on this label, and it is also why a medicine cabinet matters here.
Eleven randomised blood-pressure trials in 387 people found oral arginine lowered systolic pressure by 5.4 mmHg and diastolic by 2.7 mmHg at 4 to 24 grams a day. Those are gram doses and this bottle is not, but the direction of the effect does not change with the size of it.
Three classes of medicine act on the same physiology. Nitrates release nitric oxide directly. Most blood-pressure medicines either widen vessels or reduce the volume moving through them. The prescription drugs for erectile dysfunction block the enzyme that breaks down nitric oxide's second messenger. Adding an arginine source to any of those is additive, and the symptom people notice is light-headedness when they stand up.
Horny goat weed, the last name on the panel and one the seller's list leaves out, comes at the same system from the other end. Its compound icariin inhibits PDE5 in the test tube — the enzyme sildenafil and tadalafil block — though about eighty times more weakly than sildenafil in one assay, and no study has measured an interaction in people. It belongs here because of the combination the prescription tablets are known for: the MedlinePlus sildenafil page tells anyone on a nitrate to raise it before starting.
Anyone taking a nitrate, including the ones taken only occasionally for angina. Anyone on medication for blood pressure. Anyone using a prescription erectile-dysfunction drug, whether daily or as needed. The question is one sentence long and names two ingredients: L-arginine and horny goat weed.
The Jelly Force ingredients with a published safety literature
Ashwagandha is one of the best-studied names on this panel and the one with the largest file of adverse reports. Both of the following are specific, and specific is more useful than a general caution.
A 2026 scoping review gathered thirteen publications describing twenty-five patients. Weeks of use rather than days before anything appeared; bile-duct rather than liver-cell bloodwork in most of them, which is why jaundice and itching were the usual first complaints; and recovery over weeks to months once the supplement stopped, in every patient but one, who needed a transplant. The LiverTox monograph and the NCCIH page both record the same signal.
Separately, a 2022 case report describes thyroid over-activity presenting with a fast heart rhythm in a patient taking ashwagandha, and it is not the only such report in the literature. The mechanism offered is that ashwagandha raises thyroid hormone levels, which matters most to somebody whose levels are already being managed.
Tribulus, eighth on the panel and absent from the advertising, has a smaller file of the same kind: a 46-year-old man with severe jaundice and kidney dysfunction after two months of daily tribulus supplements, who recovered, and an earlier case of kidney and liver injury in a young man taking a tribulus preparation.
None of that makes either herb dangerous for most people, and the amount in one gummy of a nine-name blend is far below the doses in these reports. It makes liver disease, kidney disease, thyroid disease and thyroid replacement specific reasons to ask, and it makes yellowing skin or unexplained itching a reason to stop and be seen rather than to wait.
- Yellowing of the skin or the whites of the eyes, or itching without a rash. Stop and be seen.
- Dark urine or pale stools alongside unusual tiredness. Same answer.
- A racing or irregular heartbeat, particularly if you take thyroid replacement.
The rest of the Jelly Force panel, name by name
Caffeine is printed at 5 mg a gummy. MedlinePlus puts an 8-ounce cup of tea at 14 to 60 mg, and a systematic review of caffeine safety found up to 400 mg a day unproblematic for healthy adults and 300 mg in pregnancy. It is small, and it is named because some people avoid caffeine altogether. Green tea extract's liver file begins at 140 mg a day of its catechin EGCG, which is more than this whole blend weighs.
Muira puama, maca and catuaba have no signal in the indexed literature at the amounts a bottle like this holds. That is not the same as having been shown to be safe; it means nobody has looked hard, which is the ordinary position for a traditional-use botanical. Horny goat weed has a case report of a racing heart rhythm and a 2025 case of severe muscle spasms to its name, both after weeks of a stand-alone supplement.
Maca is the most reassuring of the three, because it is eaten as a food in the Peruvian Andes and the twelve-week trials at 1,500 to 3,000 mg a day reported no safety problem. The other two are traded as tonics rather than eaten, and their record is mostly animal work; the few human studies tested them inside mixtures. One finding from the animal work belongs here rather than nowhere: crude catuaba extract impaired fertility in adult female rats. This product is sold to adult men, and the doses in that study have nothing to do with a gummy, but it is one more reason this is not a bottle to share.
| Ingredient | Documented caution | Who it applies to |
|---|---|---|
| L-Arginine | Additive with nitrates, blood-pressure medicines and ED drugs | Anyone taking any of the three |
| Horny Goat Weed | Icariin acts on PDE5 in the test tube; heart-rhythm and muscle case reports | Nitrates, ED drugs, heart-rhythm problems |
| Ashwagandha | Case reports of liver injury and of thyroid over-activity | Liver disease, thyroid disease, thyroid replacement |
| Tribulus | Case reports of liver and kidney injury | Liver or kidney disease |
| Caffeine | 5 mg a gummy, below the weakest cup of tea | Anyone avoiding caffeine |
| Green Tea Extract | Liver reports start at 140 mg a day of EGCG, above the whole blend | Liver disease |
| Maca | No signal reported in the twelve-week trials | General |
| Muira Puama | No controlled human data; no severe reaction in two mixture studies | General |
| Catuaba | Impaired fertility in adult female rats | Not for women |
| The gummy base | 3 g of added sugar and 10 calories, set with apple pectin | Anyone counting sugar |
Compiled from the panel and the sources cited on this page. The label's own caution is general rather than a side-effect list.
What the Jelly Force bottle says about who should not take it
The label asks anyone who is pregnant or nursing, takes medication or has a medical condition to consult a doctor before using it, and to stop and consult one if any adverse reaction occurs. It says keep out of the reach of children, and not to use a bottle whose seal under the cap is broken or missing. This desk adds one line of its own: for healthy adults aged 18 and over.
One more thing belongs on a safety page for this category rather than in a footnote. A worldwide review of adulteration in sexual enhancement supplements and an analytical screen of products bought over the counter both found prescription erectile-dysfunction drugs hidden inside products sold as herbal. The hazard there is not the herb; it is an undeclared drug interacting with a nitrate. A supplement that works within an hour is the warning sign. The one name on this panel that touches the same enzyme, horny goat weed, is printed last and was far weaker than the drugs in the test tube, so nothing here has an acute route at the amounts one gummy holds.
Jelly Force safety questions
Does Jelly Force have side effects?
The label carries a general warning rather than a list. Four of the nine ingredients have documented cautions of their own: arginine and horny goat weed act on the blood-vessel pathway, and ashwagandha and tribulus appear in published reports of liver injury.
Does Jelly Force contain caffeine?
Yes, 5 mg a gummy, printed on the panel. MedlinePlus puts an 8-ounce cup of tea at 14 to 60 mg, so it is less than the weakest cup on that list.
Can I take Jelly Force with blood-pressure medication?
Ask the prescriber. Arginine lowers blood pressure measurably on its own, so the effects are additive and the symptom is light-headedness on standing. Horny goat weed belongs in the same question, because its compound icariin acts on the enzyme the prescription erectile drugs block.
Is Jelly Force safe for the liver?
Ashwagandha has been named in published cases of liver injury developing after weeks of use, and tribulus in a case of liver and kidney injury after two months. Most recovered on stopping. Green tea extract's liver reports begin at 140 mg a day of EGCG, more than this whole blend weighs. Anyone with liver disease should ask first.
Does Jelly Force interact with thyroid medicine?
Ashwagandha has been reported to raise thyroid activity, so anyone on thyroid replacement should raise it with their prescriber.
Who writes the Jelly Force safety pages?
- Dong JY, Qin LQ, Zhang Z, et al. Effect of oral L-arginine supplementation on blood pressure: a meta-analysis of randomized, double-blind, placebo-controlled trials. Am Heart J. 2011;162(6):959-65. Eleven trials, 387 people, 4 to 24 g a day; systolic pressure fell 5.4 mmHg. PMID 22137067. https://pubmed.ncbi.nlm.nih.gov/22137067/
- Ning H, Xin ZC, Lin G, et al. Effects of icariin on phosphodiesterase-5 activity in vitro and cyclic guanosine monophosphate level in cavernous smooth muscle cells. Urology. 2006;68(6):1350-4. Icariin inhibited all three PDE5 isoforms at roughly three times the concentration the reference inhibitor needed. PMID 17169663. https://pubmed.ncbi.nlm.nih.gov/17169663/
- Dell'Agli M, Galli GV, Dal Cero E, et al. Potent inhibition of human phosphodiesterase-5 by icariin derivatives. J Nat Prod. 2008;71(9):1513-7. In the same assay icariin's IC50 was 5.9 micromolar and sildenafil's 74 nanomolar. PMID 18778098. https://pubmed.ncbi.nlm.nih.gov/18778098/
- MedlinePlus. Sildenafil. U.S. National Library of Medicine drug information, including the warning about taking it with nitrates. https://medlineplus.gov/druginfo/meds/a699015.html
- McIntyre D, Nguyen P, Kim Y, et al. Ashwagandha (Withania somnifera)-Associated Liver Injury: A Scoping Review of Clinical Characteristics and Safety Considerations. Cureus. 2026;18(5):e109764. Thirteen publications, twenty-five patients, injury usually appearing after weeks of use. PMID 42367407. https://pubmed.ncbi.nlm.nih.gov/42367407/
- Kamal HI, Patel K, Brdak A, et al. Ashwagandha as a Unique Cause of Thyrotoxicosis Presenting With Supraventricular Tachycardia. Cureus. 2022;14(3):e23494. PMID 35475098. https://pubmed.ncbi.nlm.nih.gov/35475098/
- LiverTox: Clinical and Research Information on Drug-Induced Liver Injury. Ashwagandha. Bethesda (MD): National Institute of Diabetes and Digestive and Kidney Diseases. NCBI Bookshelf NBK548536. https://www.ncbi.nlm.nih.gov/books/NBK548536/
- National Center for Complementary and Integrative Health. Ashwagandha: Usefulness and Safety. National Institutes of Health. https://www.nccih.nih.gov/health/ashwagandha
- Mohy-Ud-Din N, Jonassaint N. Severe Liver and Renal Injury From Tribulus Terrestris. ACG Case Rep J. 2024;11(2):e01267. A 46-year-old man after two months of daily tribulus supplements; he recovered. PMID 38328764. https://pubmed.ncbi.nlm.nih.gov/38328764/
- Talasaz AH, Abbasi MR, Abkhiz S, Dashti-Khavidaki S. Tribulus terrestris-induced severe nephrotoxicity in a young healthy male. Nephrol Dial Transplant. 2010;25(11):3792-3. PMID 20667992. https://pubmed.ncbi.nlm.nih.gov/20667992/
- MedlinePlus. Caffeine. U.S. National Library of Medicine. Gives an 8-ounce cup of coffee at 95-200 mg and an 8-ounce cup of tea at 14-60 mg. https://medlineplus.gov/caffeine.html
- Wikoff D, Welsh BT, Henderson R, et al. Systematic review of the potential adverse effects of caffeine consumption in healthy adults, pregnant women, adolescents, and children. Food Chem Toxicol. 2017;109(Pt 1):585-648. Up to 400 mg a day in healthy adults, and 300 mg a day in pregnancy, not associated with adverse effects. PMID 28438661. https://pubmed.ncbi.nlm.nih.gov/28438661/
- Oketch-Rabah HA, Roe AL, Rider CV, et al. United States Pharmacopeia (USP) comprehensive review of the hepatotoxicity of green tea extracts. Toxicol Rep. 2020;7:386-402. Published case reports tie liver injury to EGCG intakes from 140 mg to about 1,000 mg a day. PMID 32140423. https://pubmed.ncbi.nlm.nih.gov/32140423/
- Partin JF, Pushkin YR. Tachyarrhythmia and hypomania with horny goat weed. Psychosomatics. 2004;45(6):536-7. A case report. PMID 15546831. https://pubmed.ncbi.nlm.nih.gov/15546831/
- Ledo T, Patel D, Tamaska W, et al. Herba Epimedium (Horny Goat Weed) Toxicity With Severe Muscle Spasms and Elevated Creatine Kinase and Creatinine: A Case Report. Cureus. 2025;17(5):e84608. A 33-year-old man after one month of an Epimedium supplement bought online. PMID 40546602. https://pubmed.ncbi.nlm.nih.gov/40546602/
- Dos Santos AH, Ramos AC, Silveira KM, et al. The exposure to Trichilia catigua (catuaba) crude extract impairs fertility of adult female rats but does not cause reproductive damage to male offspring. J Ethnopharmacol. 2015;166:86-91. PMID 25792016. https://pubmed.ncbi.nlm.nih.gov/25792016/
- Gonzales GF, Cordova A, Vega K, et al. Effect of Lepidium meyenii (MACA) on sexual desire and its absent relationship with serum testosterone levels in adult healthy men. Andrologia. 2002;34(6):367-72. Men aged 21-56 took 1,500 mg or 3,000 mg a day for twelve weeks; desire improved from week eight and testosterone did not move. PMID 12472620. https://pubmed.ncbi.nlm.nih.gov/12472620/
- Yelehe-Okouma M, Pape E, Humbertjean L, et al. Drug adulteration of sexual enhancement supplements: a worldwide insidious public health threat. Fundam Clin Pharmacol. 2021;35(5):792-807. PMID 33484004. https://pubmed.ncbi.nlm.nih.gov/33484004/
- Jairoun AA, Al-Hemyari SS, Shahwan M, et al. Screening and Determination of Synthetic PDE-5 Inhibitors in Adulterated Sexual Enhancement Supplements. Molecules. 2022;27(19):6737. PMID 36235271. https://pubmed.ncbi.nlm.nih.gov/36235271/
- National Institute of Diabetes and Digestive and Kidney Diseases. Erectile Dysfunction: symptoms, causes, diagnosis and treatment. National Institutes of Health. https://www.niddk.nih.gov/health-information/urologic-diseases/erectile-dysfunction
If nothing on this page applies to you, Jelly Force starts at two bottles
Four cautions, each specific and each answerable in a sentence. If none is yours, the sixty-day window is the next thing to read about.
From $158 for two bottles to $294 for six, with 60 days on all three
Choose A Jelly Force PackChewed, one a day, 30 to a bottle. Batch JEL-26/JE-2800, shipped from the United States.
