Maxforce Side Effects: What You Might Notice

No safety study of Maxforce itself has been published. So the side-effect picture comes from its nine ingredients. Most men who react will notice something mild, such as stomach upset or jitters.

The rarer risks are more serious. They include a blood-pressure drop with some medicines, heart rhythm changes and liver injury.

Most likely

Mildstomach, headache, jitters

Caffeine

5 mgper gummy

Added sugar

3 gper gummy

Rare but serious

Liver, heart, BPsee below

An upset stomach is the most common complaint with gummy supplements. In Maxforce, three things could play a part: sugar, sorbitol and horny goat weed.

Each gummy has 3 g of added sugar. That is about 8% of the 36 g daily limit the American Heart Association suggests for men (AHA, How Much Sugar Is Too Much?, 2026). It is small, but it counts on a sugar-limited diet.

Sorbitol is a sugar alcohol that can loosen stools in large amounts. FDA requires a laxative warning only when daily intake could reach 50 g (21 CFR 184.1835 (sorbitol)). Total carbohydrate in a gummy is 3 g, so its sorbitol is far below that.

L-arginine can lower blood pressure. Because of that, combining it with blood-pressure medicine may not be safe (MSK About Herbs, Arginine, 2022). The amount in Maxforce is not published, but it is part of an 82 mg blend.

Nitrates for chest pain also lower pressure. Many ED medicines are unsafe with nitrates (Mayo Clinic, ED and heart disease, 2026). After a heart attack, arginine may raise the risk of death (MSK About Herbs, Arginine, 2022).

Signs of low blood pressure include dizziness, light-headedness and fainting. Sit or lie down, and get help if they are strong.

For most men, liver problems are unlikely. But two ingredients in Maxforce have rare liver-injury reports.

Ashwagandha is a "likely cause" of clinically apparent liver injury. It usually appears 2 to 12 weeks after starting, with jaundice and itching. Most cases resolve 1 to 4 months after stopping (LiverTox, Ashwagandha, 2024).

Concentrated green tea extract is a well-established cause of liver injury (LiverTox, Green tea). Its amount in Maxforce is not published and is at most part of 82 mg.

This is the biggest risk in the whole category. FDA flagged 776 adulterated supplements, and 353 of them (45.5%) were sold for sexual enhancement. Sildenafil was found in 166 of those (Tucker et al., 2018).

Hidden ED drugs can interact with nitrates and drop blood pressure to dangerous levels (FDA public notification, 2021). Horny goat weed products have been found with hidden tadalafil, sildenafil or avanafil (OPSS, Horny goat weed, 2024).

The Maxforce label lists no drug. But no independent lab test of Maxforce has been published yet. Look-alike pages also sell products under similar names.

• Chest pain, shortness of breath or a racing, irregular heartbeatGet help now
• Fainting, strong dizziness or light-headednessStop
• Yellow skin or eyes, dark urine or strong itchingStop
• Rash, swelling of the face or trouble breathingGet help now
• Stomach upset, headache or jitters that lastStop if lasting

The label says to stop and consult your doctor if any adverse reaction occurs. You can also report it to FDA through the Safety Reporting Portal (FDA Supplements Q&A, 2026). If you stop within 60 days of purchase, the guarantee page explains the refund steps.