Foster & Thrive Tussin Guaifenesin 200 mg Cough Syrup – 4 fl oz | Compare to Robitussin

Foster & Thrive Tussin Guaifenesin 200 mg Cough Syrup – 4 fl oz | Compare to Robitussin

Fast, affordable relief for stubborn chest congestion. Each 10 mL dose of Foster & Thrive Tussin delivers Guaifenesin 200 mg—the same expectorant found in Robitussin® Mucus + Chest Congestion—without added dextromethorphan (DM). This non-drowsy formula thins and loosens mucus so coughs become more productive and breathing feels easier.

Want a better value? Step up to the 4 fl oz 3-Pack (Free Shipping), or go bigger with the 8 fl oz single, 8 fl oz 5-Pack (Free Shipping), or 8 fl oz 12-Pack (Free Shipping).

Learn more: Deep-dive product guidance and comparisons in our pillar and related articles:

• Robitussin Generic Alternatives – Complete Guide
• Foster & Thrive Tussin – Pure Guaifenesin Cough Relief
• Cold Medicine Without Dextromethorphan (DM): Why Guaifenesin-Only Matters

Key Features

• Compare to Robitussin® Mucus + Chest Congestion
• 200 mg Guaifenesin per 10 mL – proven expectorant
• No Dextromethorphan (DM) – single-ingredient relief
• Non-drowsy, alcohol-free formula for daytime use
• Backed by McKesson under the Foster & Thrive label

Drug Facts

Active Ingredient (in each 10 mL)

• Guaifenesin, USP – 200 mg
• Purpose: Expectorant

Uses

• Helps loosen phlegm (mucus)
• Thins bronchial secretions to make coughs more productive

Warnings

• Ask a doctor before use if you have:
  • A cough with too much phlegm (mucus)
  • A persistent/chronic cough (smoking, asthma, bronchitis, emphysema)
• Stop use and ask a doctor if:
  • Cough lasts more than 7 days, returns, or occurs with fever, rash, or persistent headache
• If pregnant or breastfeeding, ask a health professional before use
• Keep out of reach of children. In case of overdose, contact a Poison Control Center right away

Directions

• Shake well before use; measure only with the provided dosing cup (keep cup with product)
• Adults & children 12 years and over: 10–20 mL every 4 hours
• Do not take more than 6 doses in 24 hours
• Children under 12 years: Do not use

Other Information

• Each 10 mL contains sodium 6 mg
• Store at 20–25°C (68–77°F). Do not refrigerate

Inactive Ingredients

• Caramel, citric acid anhydrous, dextrose, FD&C Red #40, flavor, glycerin, high fructose corn syrup, menthol, purified water, saccharin sodium, sodium benzoate

Frequently Asked Questions

Is this the same as Robitussin?

It uses the same expectorant (Guaifenesin 200 mg per 10 mL). Foster & Thrive is a DM-free, single-ingredient alternative at a better value.

Will it make me drowsy?

No. Guaifenesin is non-drowsy and this syrup contains no dextromethorphan or sedating antihistamines.

When should I choose a DM-free syrup?

DM-free is preferred when you want to loosen and clear mucus without suppressing cough or risking drowsiness—especially for daytime use or when combining with other treatments as advised by your provider.